Rievtech PR-6AC-R, PR-12DC-DA-R-E, PR-12AC-R, PR-12DC-DA-TN, PR-12DC-DA-R User Manual

...

Programmable Relay User’s Manual

October 2018

Version 4.5

Rievtech Electronic Co. Ltd, Room 505, Building A, No.88 Dazhou Road, Tiexinqiao, Yu huatai District, Nanjing City, Jiangsu Province, Peoples Republic

of China Tel: +0086 25 5289 5099

Programmable Relay ● User Manual for ELC and PR Series 2 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

Document Revisions

Date Version Number Document Changes

28/06/2017 4.0 Initial Draft

20/05/2018 4.1 First Revision

02/07/2018 4.2 Addition of MQTT Functions

28/07/2018 4.3 Addition of Library Function

30/09/2018 4.4 Addition of PR Ethernet Series

15/10/2018 4.5 Addition of Webserver

Programmable Relay ● User Manual for ELC and PR Series 3 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

Table of Contents

1.1.

1.2.

1.3.

1.4.

1.5.

1.6.

1.7.

2.1.

2.2.

2.3.

2.4.

2.5.

3.1.

3.2.

Products Covered .................................................................................................................................. 10

Product Safety ...................................................................................................................................... 10

Qualified Personnel ................................................................................................................................ 10

Trademarks ........................................................................................................................................... 10

Disclaim of Liability................................................................................................................................. 10

Additional support.................................................................................................................................. 10

Overview ............................................................................................................................................... 11

Feature Highlights .................................................................................................................................. 11

Some of the things xLogic can do for you ................................................................................................. 11

xLogic Devices ...................................................................................................................................... 11

Communication / Network ...................................................................................................................... 12

ELC and PR-Series CPU Naming Convention ............................................................................................ 14

ELC and PR-Series Expansion Unit Naming Convention ............................................................................. 14

3.3.

3.4.

4.1.

4.2.

4.3.

Range of Hardware ................................................................................................................................ 15

Structure & Dimensions .......................................................................................................................... 17

Dimensions ........................................................................................................................................... 19

DIN Rail Mounting .................................................................................................................................. 19

Wall Mounting ....................................................................................................................................... 20

Programmable Relay ● User Manual for ELC and PR Series 4 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

5.1.

5.2.

5.3.

6.1.

6.2.

Overview of CPU Menu Structure ............................................................................................................ 26

LCD Panel Instructions ........................................................................................................................... 26

Selecting a Function Page ...................................................................................................................... 28

xLogicsoft Functions .............................................................................................................................. 37

General Input and Output Functions ......................................................................................................... 38

6.3.

6.4.

6.5.

Programmable Relay ● User Manual for ELC and PR Series 5 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

Basic Functions List – GF ....................................................................................................................... 41

Basics of Special Functions - SF ............................................................................................................. 44

Special functions list – SF ....................................................................................................................... 46

6.6.

Programmable Relay ● User Manual for ELC and PR Series 6 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

App Functions List – AP ....................................................................................................................... 114

6.7.

6.8.

7.1.

7.2.

Library Function (LIB) ........................................................................................................................... 124

MQTT Functions .................................................................................................................................. 127

Installing xLogicsoft .............................................................................................................................. 136

Main Functions .................................................................................................................................... 138

7.3.

8.1.

Operation Instructions .......................................................................................................................... 138

Ethernet CPU with Built-in Webserver .................................................................................................... 151

Programmable Relay ● User Manual for ELC and PR Series 7 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

8.2.

8.3.

8.4.

9.1.

9.2.

9.3.

Configuration with Ethernet Device Manager ........................................................................................... 175

Establish communication between CPU and xLogicsoft/SCADA via Ethernet. ............................................. 178

How to Establish Communication Between CPUs via Ethernet? ................................................................ 179

Dual-function switch............................................................................................................................. 184

Automatic Gate ................................................................................................................................... 185

Ventilation System ............................................................................................................................... 186

9.4.

9.5.

9.6.

10.1. xLogic Supported Modbus Function Codes ............................................................................................ 192

10.2. Register Addresses of xLogic ................................................................................................................ 192

Factory Gate ....................................................................................................................................... 188

Daylight Lamp System .......................................................................................................................... 189

Rainwater Pump .................................................................................................................................. 190

Programmable Relay ● User Manual for ELC and PR Series 8 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

1. Introduction

Congratulations on the purchase of your xLogic Micro PLC provided by Rievtech Electronic Co., Ltd.

The xLogic Micro PLC is a compact and expandable CPU replacing mini PLCs, multiple timers, relays and counters.

The xLogic Micro PLC perfectly fits in the space between timer relays and low-end PLCs. Each CPU incorporates not only a real-time clock and calendar but also provides support for optional expansion I/O modules to enhance control and monitoring applications. Adjustments to programs can easily be performed via the keypad and LCD display (where fitted), or through the Rievtech east to use xLogicsoft programming software. The hardware can be either DIN-rail and panelmounted, offering full flexibility for the various installation needs of your application.

The xLogic Micro PLC is available in 120V/240V AC or 12V/24V DC versions, making it the ideal solution for relay replacement, or simple control applications such as building and parking lot lighting, managing automatic lighting, access control, watering systems, pump control, ventilation systems, home automation and a wide array of other applications which require a low cost as a primary design issue.

We strongly recommended taking the time to read this manual, before putting the xLogic Micro PLC to work. Installation, programming and use of the unit are detailed in this manual. The feature-rich xLogic Micro PLC provides an off-line operation mode, allowing full configuration and testing prior to in-field service commissioning. In reviewing this manual, you will discover many additional advantageous product properties, which will greatly simplify and optimize the use of your xLogic Micro PLC.

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1.1. Products Covered

The manual applies to devices of ELC series and PR series only. For more information about EXM series (GSM and WIFI module), please refer to the x-Messenger User Manual

1.2. Product Safety

This manual contains notices you have to observe to ensure your personal safety, as well as to prevent damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert symbol; notices referring to property damage only, have no safety alert symbol. The notices shown below are graded according to the degree of danger.

Table 1 - Safety Warnings

Symbol Hazard Description

Indicates that death, severe personal injury or damage to assets will result if proper precautions are not taken.

Indicates that death, severe personal injury or damage to assets may result if proper precautions are not taken.

Indicates personal injury or damage to assets can result if proper precautions are not taken.

Please read the complete operating instructions before installation and commissioning. Rievtech or its distributors does not accept any liability for possible damage to persons, buildings or machines, which occur due to incorrect use or from not following this manual.

1.4. Trademarks

All names identified by xLogic are registered trademarks of the Rievtech. The remaining trademarks in this publication may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.

The distribution and duplication of this document or the utilization and transmission of its contents are not permitted without express written permission. Offenders will be liable for damages. All rights, including rights created by patent grant or registration of a utility model or design, are reserved.

1.6. Disclaim of Liability

We have reviewed the contents of this publication to ensure consistency with the hardware and software described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the information in this publication is reviewed regularly and any necessary corrections are included in subsequent editions.

Indicates that an unintended result or situation may occur if the corresponding notice is not taken.

If more than one warning is present, then the warning

NOTICE

with the highest degree of danger shall be used.

1.3. Qualified Personnel

Only persons qualified to correct electrical and safety standards and regulations at the time of use should be allowed to install, commission and operate this equipment.

The device/system may only be set up and used in conjunction with this documentation. Commissioning and operation of a device/system may only be performed by qualified personnel. Within the context of the safety notices in this documentation qualified persons are defined as persons who are authorized to commission, ground and label devices, systems and circuits in accordance with established safety practices and standards.

1.7. Additional support

We take pride in answering your question as soon as we can. Please consult our website at www.rievtech.com for your closest point of contact or email us at sales@rievtech.com.

2. General Introduction to xLogic

2.1. Overview

xLogic is a universal logic module made by Rievtech.

xLogic is a compact, expandable CPU that can replace mini PLC, multiple timers, relays and counters. Bridging the gap between a timing relay and a low-end PLC. Each CPU has a real-time clock and calendar and supports optional expansion I/O modules to meet your control and monitoring applications needs. Data adjustments can be done via the onboard keypad and LCD display, or with xLogicsoft. It can be either DIN-rail or panel mounted, depending upon the needs of your application, and it is available in 120/240 VAC as well as 12/24 VDC versions, and it is an ideal solution for relay replacement applications, simple control applications such as building and parking lot lighting, managing automatic lighting, access control, watering systems, pump control, or ventilation systems in factory, and home automation and applications in which cost is a primary design issue.

2.2. Feature Highlights

 4-lines, 16-characters per line, backlight display.  Multiple value display and input via keypad and LCD

display.

 70 kinds of function Blocks can be used in a circuit

program in maximum

 Standard Modbus RTU/ASCII/TCP communication

protocol supported.

 It’s optional for xLogic to act as a slave or master in a

Modbus communication network.

 Easily connect to other factory devices such as touch

screens by RS232 cable and/or RS485 module.

 CAN BUS protocol-based expansion modules (PR-

18/PR-24 series CPU)

 Expandable up to 16 linked IO expansion modules

reaching 282 I/O points in maximum

 Optional RS232, RS485 and Ethernet connectivity  Multiple channels analogue inputs available with 0-10

VDC, PT100 & 0/4….20mA.

 Default Real Time Clock (RTC) and Summer/Winter timer

available

 Real Time Clock (RTC) at 25 °C kept for 20 days  4 channels high-speed counting  Pre-configured standard functions, e.g. on/ off-delays,

pulse relay and softkey

 2 PWM channels (10kHz maximum)  Retentive memory capability (Not applicable to PR-6 &

PR-12-E series CPU)

 Isolated RS232 and USB programming cables  Program capability up to

 1024 function blocks for PR-18, PR-24, PR-12-N,

PR-18-N & PR-26-N

 512 function blocks for PR-12 & ELC-12-N  64 function blocks for PR-6 & PR-12-E

 Mounting via modular 35mm DIN rail or screw fixed

mounting plate

 On-line monitor capability (Free SCADA software for all

series xLogic)

 Datalogging  A range of analogue signals available (0 to 10 VDC, 0/4

to 20 mA and PT100 probe inputs and 0 to10VDC and 0/4 to 20mA outputs)

 Low cost

2.3. Some of the things xLogic can do for you

The xLogic Micro PLC provides solutions for commercial, industrial, building and domestic applications such as lighting, pumping, ventilation, shutter operations or in switching cabinets. The possible uses are diverse, and these are just a few possibilities. Using the RS485 bus and Ethernet connectivity allows the user to realize various extensive (real-time) monitoring and control applications. Special versions, without operator LCD and display unit, are available for series production applications in a small machine, installation and cabinet building environments to further slash cost.

2.4. xLogic Devices

xLogic Basic is available in two voltage ranges.

*DC Range: 12-24 VDC i.e.: PR-6DC, PR-12DC, PR-14DC, PR-18 and PR-24DC series.

*AC Range: 110-240 VAC i.e.: PR-6AC, PR-12AC, PR-14AC, PR-18AC and PR-24AC series.

*With LCD Display: “-HMI” model, such as PR-12DC-DA-RHMI

*Without LCD Display: PR-6 series and with “-E” model, such as PR-12DC-DA-R-E.

PR-18 and PR-24 all have LCD display.

Expansion modules:

PR-E (for use with PR-14, ELC-22-N, PR-18, PR-24 and all PR-Ethernet CPUs)

Programmable Relay ● User Manual for ELC and PR Series 11 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

* xLogic digital expansion modules are available in 12/24 VDC and 110/240 VAC versions and have eight inputs and eight outputs.

* xLogic analogue expansion modules are available in 12/24 VDC only and have up to six digital and 4 analogue inputs.

Communication Cable and Expansion Module:

xLogic: RS232 communication cable (Model: ELC-RS232)

It is a serial cable with photoelectric isolation which can be directly connected to a standard 9-pin port of PC. This enables the user's program to be downloaded into xLogic CPU through xLogicsoft.

It can also serve as a connection cable between CPU and third-party devices with an RS232, such as HMIs, PLCs, etc. in a Modbus communication system.

xLogic: USB communication cable (Model: ELC-USB). It is a communication cable with photoelectric isolation

through which PC with USB port can be connected to xLogic CPU module, moreover, it has same features as the ELCRS232 module, so it is quite convenient for users whose computer has no standard serial port.

Figure 1 xLogic as RS485 Slave

PR-E-RS485 module (or PRO-RS485 Cable) is

NOTICE

required to connect the CPU to the RS485 bus except the models with built-in RS485 port.

RS232 or USB port (ELC-RS232/ ELC-USB needed)

If the application does not require an RS485 network and only one main module with some expansion modules is needed for the application, then download/upload of the CPU program happens over the standard RS232 or USB port. It allows system maintenance like monitoring too.

xLogic: PRO-RS485 cable (Model: PRO-RS485). It is a serial converter cable with photoelectric isolation, which

converts the CPU RS232 programming port to an isolated RS485 port.

xLogic: RS485 module（Model：PR-RS485） An isolated RS485 converter providing terminals of RS485

port for PR-14, PR-18, ELC-22-N and PR-24 series CPUs for connection with third-party devices.

2.5. Communication / Network

xLogic offers different ways to communicate within a system.

RS485 port

The RS485 port is used for communication between the CPU and various devices or equipment which have a standard RS485 port. Communication is via the Modbus RTU/ASCII protocol.

Figure 2 xLogic as RS485 Master

Ethernet network

If the application requires a system where more than one main module is needed and these main modules must communicate with each other, then an Ethernet CPU can be connected directly to an Ethernet network using the built-in LAN port. The CPU programs can also be uploaded/downloaded via Ethernet too. Furthermore, our free of charge SCADA software can be used with our Ethernet CPUs.

Programmable Relay ● User Manual for ELC and PR Series 12 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

Figure 3 xLogic Ethernet

xLogic CPU can be connected with expansion modules of different supply voltages, but the expansion module must be supplied with the correct voltage corresponding to its type. Each xLogic CPU provides the following program capabilities regardless of the number of connected expansion units:

 Digital Inputs

 I1 to I4 (PR-6)  I1 to I8 (PR-12)  I1 to IC (ELC-18)  I1 to IE (PR-24).  I11 to I18 (Expansion with address 1)  I161 to I168 (Expansion with address 16)

 Analogue Inputs

 I1 to I4 (PR-12)

 I1 to I6 (PR-18/PR-24)  I11 to I14 (PR-E expansion with address 1)  AI161 to AI164 (PR-E expansion with address 16)

 Digital Outputs

 Q1 to Q4(PR-12)  Q1 to Q6（PR-18)  Q1 to QA (PR-24)  Q11 to Q18 (PR-E expansion with address 1)  Q161 to Q168 (PR-E expansion with address 16)

 Digital Flag blocks

 F1-F32 (PR-6 and PR-12-E)  F1-F256 (PR-12/PR-18/PR-24)  -F8: Start-up flag  -F63: Buzzer of ELC-43TS control bit  -F64: Backlight control bit (to control the backlight

of LCD and backlight of ELC-43TS)

 Analogue Flag blocks

 AF1-AF32 (PR-6/PR-12-E)  AF1 to AF256 (PR-12/PR-18/PR-24)

 Shift register bits S1 to S8

Programmable Relay ● User Manual for ELC and PR Series 13 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

3. Hardware Models and Resources

3.1. ELC and PR-Series CPU Naming Convention

Figure 4 - CPU Naming Convention

1. Series name – ELC-Series or PR-Series.

2. Total number of inputs and outputs for the device.

3. Voltage Supply

a. AC b. DC

4. Types of Inputs:

a. D – Digital only b. DA – Digital and Analogue Voltage c. DAI – Digital and Analogue Voltage and

Current

5. Type of Outputs:

a. R – Relay b. TN – Transistor PNP c. RT – Relay and Transistor PNP d. RTA – Relay, Transistor PNP and

Analogue Voltage and Current

6. E = Economic model –Non-expandable.

7. N = Ethernet built-in.

3.2. ELC and PR-Series Expansion Unit Naming Convention

Figure 5 - Expansion Unit Naming Convention

1. Series name.

2. Indicates Expansion module.

3. Type of input and output points

4. A number – Total number of inputs and outputs

a. AI – Analogue input only b. AQ – Analogue output only c. PT100 – Temperature input only PT100 d. RS485 – Isolated RS485 communication

5. Voltage Supply:

a. AC b. DC

6. Types of Inputs:

a. D – Digital only b. DA – Digital and Analogue

7. Type of Outputs:

a. R – Relay b. TN – Transistor PNP

NOTICE

Sometimes additional letters will be used after the

- CAP = CPU has no built-in LCD.

- HMI = CPU has built-in LCD and Panel keys

product model as follows:

Programmable Relay ● User Manual for ELC and PR Series 14 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

3.3. Range of Hardware

110-240

12-24 VDC

4DA 0-10V

2 Relays (10A)

Yes

110-240

12-24 VDC

8D (4DA 0-10V)

4 Relays (10A)

Yes

110-240

12-24 VDC

8D (4DA 0-10V)

4 Relays (10A)

4x60kHz

Yes

12-24 VDC

8D (4DA 0-10V)

4 T (PNP)

4x60kHz

4x10kHz

Yes

110-240

10D (6DA 0-

110-240 Yes

12-24 VDC

6 Relays (10A)

4x60kHz

Yes

12-24 VDC

4R + 2T (PNP)

4x60kHz

2x10kHz

Yes

NOTICE: Key for understanding lettering used in the following

tables: N = No; Y = Yes; D = Digital only; DA = Digital or Analogue; R = Relay 10A max. rating (2A inductive); T = Transistor PNP 0.3A max. rating.

Non-Expandable CPU Range

Table 1 - PR-6 Series CPU Range

Model Expansion Supply Inputs Outputs

PR-6AC-R No

PR-6DC-DA-R

Table 2 - PR-12 Series CPU Range

Model Expansion Supply Inputs Outputs

PR-12AC-R-E

PR-12DC-DA-R-E

VAC/DC

High Speed

Count

4 Digital 2 Relays (10A) No No No Yes

High Speed

Count

8 Digital 4 Relays (10A)

No No No Yes

PWM HMI RTC

PR-12AC-R

PR-12DC-DA-R PR-12DC-DA-TN

VAC/DC

Expandable CPU Range

Table 3 - PR-14 Series CPU Range – Built-In RS485 Port

Model Expansion Supply Inputs Outputs

PR-14AC-R Yes

PR-14DC-DA-R Yes 12-24 VDC

Table 4 - PR-18 Series CPU Range

Model Expansion Supply Inputs Outputs

PR-18AC-R Yes

PR-18DC-DA-R PR-18DC-DA-RT

VAC/DC

8 Digital 4 Relays (10A)

10 Digital 4 Relays (10A) No No Yes Yes

10V)

12 Digital 6 Relays (10A)

4 Relays (10A) 4x60kHz No Yes Yes

No No Yes Yes

High Speed

Count

High Speed

Count

No No Yes Yes

PWM HMI RTC

Programmable Relay ● User Manual for ELC and PR Series 15 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

110-240 Yes

12-24 VDC

6 Relays (10A)

4x60kHz

Yes

R + 2T (PNP) +

110-240 Yes

24 VDC

8D (4DA 0-10V)

4 Relays (10A)

4x60kHz

Yes

110-240

12D (6DA 0-10V

110-240

10 Relays

16D (8DA 0-10V

8R + 2A (0-

16D (8DA 0-10V

110-240 VAC/DC

8 Digital

4 Relays (10A) + 4 Relays (3A)

12-24 VDC

8Digital (4DA 0-10V)

4 Relays (10A) + 4 Relays (3A)

12-24 VDC

8Digital (4DA 0-10V)

8 Transistor (0.3A)

12-24 VDC

4x0/4-20mA

12-24 VDC

3 x Thermistor PT100

12-24 VDC

2 x 0-10 V/0-20 mA

12-24 VDC

Additional Isolated RS485 Port

RS232 Programming and communication lead between CPU and PC

USB Programming lead between CPU and PC. Needed for firmware updates.

A device used to copy a program from one CPU to another same model CPU

Real-time data logging module, which can log IO and program data with time and date stamp

Optically isolated RS232 to RS485 converter cable

A standard number of days for RTC retentivity is 20-days. This unit extends that to 1-year.

Table 5 - PR-24 Series CPU Range – Built-In RS485 Port

Model Expansion Supply Inputs Outputs

PR-24AC-R

PR-24DC-DA-R

PR-24DC-DAI-RTA Yes 12-24 VDC

Yes

VAC/DC

14 Digital 6 Relays (10A)

D (6DA 0-10V)

+ 2A (0-20mA)

1A (0-10V/0-

20mA)

Table 6 - Ethernet Remote Series CPU Units – Built-In RS485 Port and Web Server

Model Expansion Supply Inputs Outputs

PR-12AC-R-N Yes

PR-12DC-DA-R-N PR-18AC-R-N (No Built-in RS485)

PR-18DC-DAI-R-N Yes 24 VDC

PR-18DC-DAI-TN-N

PR-26AC-R-N

Yes

Yes 12-24 VDC

Yes

VAC/DC

8 Digital 4 Relays (10A)

12 Digital 6 Relays (10A)

+ 2DA 0-20mA)

+ 2A (0-20mA)

16 Digital

6 Relays (10A) 4x60kHz No Yes Yes

6T (PNP) 4x60kHz 2x10kHz Yes Yes

(10/5A)

High Speed

Count

No No Yes Yes

4x60kHz 2x10kHz Yes Yes

High Speed

Count

No No Yes Yes

PWM HMI RTC

PR-26DC-DAI-RA-N Yes 12-24 VDC

PR-26DC-DAI-RT-N Yes 12-24 VDC

+ 4DA 0-20mA)

10V/0-20mA)

8R + 2T (PNP) 4x60kHz 2x10kHz Yes Yes

Expansion Modules

Table 7 - Expansion Modules for PR-14, PR-18, PR-24 and Remote PLC CPUs (Max. 16 Units)

Model Supply Inputs Outputs

PR-E-16AC-R PR-E-16DC-DA-R PR-E-16DC-DA-TN PR-E-AI-I PR-E-PT100 PR-E-AQ-VI PR-RS485

Accessories

Table 8 - xLogic Accessories

Model Description

ELC-RS232 ELC-USB ELC-COPIER ELC-MEMORY PRO-RS485 ELC-BATTERY

4x60kHz No Yes Yes

Programmable Relay ● User Manual for ELC and PR Series 16 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

3.4. Structure & Dimensions

PR-6 Series CPU and EXM-E Expansion Modules

Figure 4 PR-6 Dimensions

PR-12 Series with LCD

PR-14 and PR-18 Series

Figure 7 PR-14 Dimensions

Figure 5 PR-12 Dimensions

PR-12 Series without LCD

Figure 6 PR-12-E Dimensions

Figure 10 PR-18 Dimensions

PR-24 Series

Figure 8 PR-24 Dimensions

Programmable Relay ● User Manual for ELC and PR Series 17 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

PR-E Expansion Modules

Figure 12 PR-E Dimensions

Programmable Relay ● User Manual for ELC and PR Series 18 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

4. Installing and Removing Rievtech Hardware

4.1. Dimensions

The dimensions of the Rievtech xLogic hardware is compliant with DIN 43880.

xLogic can be “snap-mounted” to 35mm (EN 50022) DIN rail or wall mounted.

Table 9 xLogic Dimensions

Model Width (mm)

EXM-E Expansion module PR-6 CPU 48 PR-E Expansion module 72 PR-12 CPU 72 PR-14 CPU 95 PR-18 CPU 95 ELC-22 CPU 133 PR-24 CPU 133

8. Repeat the procedure to add further expansion units if required.

Figure 13 Connection the CPU with expansion

NOTICE:

If you need to install the CPU and expansion units on

different DIN rails, then you will need a PR-FLAT expansion cable. The maximum distance between CPU and expansion unit is 200 metres.

Removing Your Hardware

Always remove power whilst adding/removing an expansion unit.

4.2. DIN Rail Mounting

The following procedure should be used to install/uninstall you xLogic CPUs and expansion units on DIN rail.

Mounting Your Hardware

1. Hook the top of the xLogic CPU onto the DIN rail.

2. Push down the lower end to snap it into place. The mounting catch MUST engage.

3. Hook the top of the xLogic expansion unit onto the DIN rail.

4. Slide the expansion unit toward the CPU until they are touching. Make sure the ribbon cable does not get caught between it and the CPU.

5. Push down on the lower part of the expansion unit to snap it in place, ensuring the mounting catch engages.

6. Lift-up the expansion port cover on the CPU.

7. Push the connector of the ribbon cable into the socket on the CPU ensuring the correct alignment of the pins and close the cover when done.

1. Insert a screwdriver into the eyelet at the bottom of the sliding interlock and move the latch downwards.

2. Slide the expansion module to the Right.

3. Using a screwdriver in the eyelet, carefully lever it downward.

4. Lift the expansion unit off the DIN rail swinging the unit up from the bottom.

5. Repeat steps 1 to 4 for all other units.

Programmable Relay ● User Manual for ELC and PR Series 19 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

4.3. Wall Mounting

For wall-mounting, first, slide the mounting slides on the rear side of the devices towards the outside. You can now wallmount xLogic by means of two mounting slides and two M4 screws (tightening torque 0.8 to 1.2 Nm).

Drilling Templates for Wall Mounting

Use the templates below for mounting your Rievtech hardware on a wall.

Figure 10 PR-12 Wall Mounting

Figure 11 PR-18 & Expansions Wall Mounts

Figure 9 PR-6 Wall Mounting

Figure 12 PR-24 Wall Mountings

Programmable Relay ● User Manual for ELC and PR Series 20 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

OFF/0

< 40 VAC

< 5 VDC

ON/1

> 79 VAC

> 10 VDC

Analogue Input

NOT APPLICABLE

0 to 10 VDC

Figure 13 PR-12-N Wall Mountings

Wiring

Use a screwdriver with a 3-mm blade or adjusting Rievtech hardware terminals. You do not need wire ferrules for the terminals. You can use conductors with cross-sections of up to the following thicknesses:

 1 x 2.5 mm2  2 x 1.5 mm2 for each second terminal chamber

 Tightening torque: 0.4... .0.5 N/m (3. .4 lbs/in)

NOTICE: Always cover the terminals after you have completed

the installation. To protect against accidental contact

with live parts. Local electrical standards must be

complied with.

Connecting Power

The following hardware is rated for operation with 110/240 VAC supply:

 PR-6AC, PR-12AC, PR-14AC, PR-18AC, PR-24AC and PR-E-16AC

The following hardware is rated for operation with 12/24 VDC supply:

 PR-6DC, PR-12DC, PR-14DC, PR-18DC, PR-24DC and PR-E-16DC

NOTICE: A power failure may cause an additional edge

triggering signal. Only data from the last uninterrupted

cycle will be stored.

Figure 14 Power Connection

Connecting Input Signals

Inputs can be connected to various sensor elements such as momentary switches, switches, light barriers, daylight control switches, etc.

Table 10 Input Status

Signal state AC Type DC Type

Input Current

NOTICE: For PR-6DC-DA-R, PR-12DC-DA, PR-14DC-DA, PR-

18DC-DA, PR-24DC-DA Series and versions can accept analogue inputs. The type of signal connection can be set within the user program by selecting ether Analogue Input or Digital Input for that channel. They will be recognized as analogue inputs when the input terminal is connected with an analogue function block, otherwise, they will be recognised as digital inputs.

< 0.03 mA

Typical 0.06 mA

< 0.1 mA

Typical 0.3 mA

Programmable Relay ● User Manual for ELC and PR Series 21 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

NOTICE: The analogue inputs require DC 0V ~ +10V voltage

signals. These are divided equally into 0.01 VDC

increments. In programming, all the block parameters

related to the analogue inputs are based on the

minimum increment of 0.01 VDC.

NOTICE: If the input voltage is greater than 10 VDC, they will

NOT be recognised as analogue inputs.

NOTICE: The time taken for a change of digital state, 0 to 1 or 1

to 0, must be greater than 50ms.

DC Type Digital Input Connections

Analogue Input Connections (0 to 10 VDC)

Figure 17 Analogue Voltage Inputs

Analogue Input Connections (0 to 20 mA)

Figure 15 DC Inputs

AC Type Digital Input Connections

Figure 16 AC Inputs

Figure 18 Analogue Current Inputs

Analogue Input Connections (PT100)

Either 2 or 3-wire PT100 sensors can be connected.

With a 2-wire sensor, connect to terminals M1+ and M1-. Short between M1+ and IC1. There is no compensation for any impedance in the wire. A measurement error of 1 Ω is equivalent to +2.5 °C.

Using a 3-wire sensor can inhibit any influence caused by cable length.

Programmable Relay ● User Manual for ELC and PR Series 22 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

Figure 19 Analogue PT100 2-, 3-Wire Inputs

Connecting Output Signals

Using a Digital Output – Relay Type

Various loads such as a lamp, fluorescent tube, motor, contactor, etc., can be connected to the relay outputs of the Rievtech hardware. The maximum output current that can be handled by the relay is 10A for the resistance load and 3A for an inductive load. The relay output connection should be wired as per the following figure:

Figure 21 Transistor Digital Output

NOTICE: * The load connecting voltage must be ≤60 VDC and

it must be DC.

* The “+” terminal of the output wiring must be

connected to the DC positive voltage, and it must be connected with the “L+” terminal of the CPU power terminal. The load must be connected with the “-ve” terminal of the DC negative voltage supply.

Figure 20 Relay Digital Output

Using a Digital Output – Transistor Type

The load connected to a transistor output must have the following characteristics:

* The maximum switching current cannot exceed 0.3A.

* When the switch is ON (Q=1), the maximum current is 0.3A.

Using an Analogue Output

PR-E-AQ-VI (0 to 10 VDC)

Figure 22 Analogue 0-10V and 0-20mA Output

EXM-E-RS485/PR-RS485

The RS485 expansions are just converters with photo isolation providing 3-sets of wiring terminals (although there are 3-sets of terminals, they are connected within the unit, so only one channel RS485 is available) of RS485 port (2x8pin) of CPU(PR-18/ELC-22/PR-24) for easy connection with other devices.

Programmable Relay ● User Manual for ELC and PR Series 23 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

Figure 23 RS485 Connection

If “RT1”, RT2” terminals are short connected, one 120R resistor will be connected between A/+ and B/- providing a termination resistor for end-of-line purposes.

Communication Port Instructions

PR-6 CPUs

Figure 24 PR-6 CPU Ports

Without HMI

PR-14, PR-18, ELC-22 and PR-24 CPUs

PR-12 CPUs

Figure 25 Other CPU Ports

The programming port/RS232 port can be used with any of the following Rievtech devices. ELC-RS232, ELC-USB, ELCCopier, ELC-MEMORY, ELC-BATTERY, and PRO-RS485. This is COM 0.

With HMI

Programmable Relay ● User Manual for ELC and PR Series 24 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

When the programming port is being used as the standard RS232 port (D-shape 9 pin header). The ELC-RS232 cable is needed. Below shows you the pinouts for the device:

Function

RXD

TXD

GND

others

NULL

PR-RS485 module is required when either the PR-18/ELC22/PR-24 CPU is required to communicate with a third-party device via RS485. Note the PR-24 has a built-in RS485 too.

Figure 26 RS232 Pinouts

Expansion port/RS485 (pin definition)

Figure 34 RS485 Pinouts

3------RS485 A 7------CANL

5------RS485 B 9------CANH

4------GND 15------+5V

6------GND 16------+5V

Communication between CPU and expansion module will use pins 4, 7, 9 and 15.

Figure 27 COM Port Details on LCD

The programming port/RS232 port can be used with any of the following Rievtech devices. ELC-RS232, ELC-USB, ELCCopier, ELC-MEMORY, ELC-BATTERY, and PRO-RS485. This is COM 0.

When the programming port is being used as the standard RS232 port (D-shape 9 pin header). The ELC-RS232 cable is needed.

Programmable Relay ● User Manual for ELC and PR Series 25 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

5. Parameter Modification using CPU HMI

5.1. Overview of CPU Menu Structure

The PR-12, PR-14, PR-18, ELC-12-N and ELC-22-N have the same menu structure. We will use a PR-18 in the following examples.

Parameter Assignment Mode

Parameter assignment menu：

Figure 28 CPU Parameter Menu

5.2. LCD Panel Instructions

This panel allows the user to carry out the following tasks:

 Display the RUN/STOP status of the CPU  Display/modify the Clock  Display IO status of CPU and expansion units  Display alarm messages  Display program register values  Modify some types of register parameters  Control of backlight using the program, Light on

Alarm for example

 Initial system display message can be customized  Up to 64 different alarm messages can be displayed  Modify the CPU ID address  Set password protection  Change communication parameter for COM ports

PR-12 Series CPU

PR-18 Series CPU

ELC-22 and ELC-26 series CPU

1. Display Area – 4 x 16 characters can be displayed

2. 4 Function Keys – Only on models ELC-22-N and PR-24 Series CPUs.

3. 6 Panel Keys – Used to navigate menu and view alarm messages.

Programmable Relay ● User Manual for ELC and PR Series 26 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

LCD Menu Structure

Programmable Relay ● User Manual for ELC and PR Series 27 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

Figure 29 LCD Menu Structure

After being powered on, the CPU will check to see if a valid program is stored within it.

If the program is accurate, then the CPU will be running, meanwhile, the system cover will show as follows, this can be customised within xLogicsoft, this is the default initialization screen.

If there are several parameter pages, users can press or

keys to go to the page they require. The last page is the

cursor mode:

Cursor keys can be controlled in this page by pressing arrow keys and ESC key at the same time.

If xLogic has several alarms in the same period, it only displays the message with the highest priority in the function block. You

may cycle through all current alarm messages by pressing or key.

NOTICE: The message text block within xLogicsoft is treated as

a parameter page only when it has no input connected to it, otherwise, it will be regarded as an alarm page. When the input pin sees a rising edge, the LCD will display an alarm message.

5.3. Selecting a Function Page

Press ESC key to change from running mode to function page mode.

Programmable Relay ● User Manual for ELC and PR Series 28 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

After pressing ESC key, xLogic switches to function page and the function menu will be shown as below.

Function Page Options

Run/stop Select this menu to switch the xLogic status between RUN

and STOP. Refer to chapter 4.3.1 for details.

Set Param To set/change a function block parameter. Refer to chapter

4.3.2 for details.

Set… Used to set/modify a password (see 4.3.3), set an address of

CPU or expansion unit (see 4.3.4), LCD settings (see 4.3.5) and communication parameters settings (see 4.3.6) for details.

1. Press ”UP” or “DOWN” key to move the cursor to “Set….”

2. Then press the OK key, xLogic will display as follows:

After pressing ESC key, you’ll find out your program has changed to “stop” status as shown below:

Set Parameter

1. Under the FUNCTION PAGE, select “Parameters”: Press or key

Clock To set and modify date and time. Refer to

chapter 4.3.7 for details.

Network (This only for Ethernet CPU) Recovery ET: Pressing OK whilst the cursor is on this option will be reset the CPU to default settings.

How to Switch Between RUN and STOP

You should first select a FUNCTION PAGE. (Read 4.3)

1. Move the cursor to “Run/stop”: Press “UP” or “DOWN” key.

2. Move the cursor to "Yes": Press OK key.

2. Confirm by pressing the OK key.

Then xLogic displays the first parameter, so you can modify as you like. If there is no parameter to set/modify, you can press ESC key to return.

No parameter to edit, press ESC key to return

3. Select the parameter you intend to modify.

4. Select a specific value of that parameter which you want

to edit, then press the OK key.

Programmable Relay ● User Manual for ELC and PR Series 29 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

How to modify parameter?

A. First, select a parameter which you need to edit by following the procedures below:

1. Under the FUNCTION PAGE, select

“Parameters”: Press or key

2. Confirm by pressing the OK key.

B. Move to the parameter, modify value and press OK to confirm:

1. Move the cursor to the parameter to be

modified: press or key.

2. Modify value: press or key.

3. Confirm the modification by pressing the OK

key.

In parameter mode, time segment figure of a timer:

You can alter the time and date of the on/off switch.

The current value of the counter

In parameter mode, the parameter view of a counter:

The current value of hour counter

In parameter mode, the view of the hour counters:

NOTICE: When xLogic is running, not only the time value but

also the units of time (S, M, H) can be altered. You can alter the time base (s=second, m=minute, h=hour) during runtime.

The current value of time T

View time T in parameter mode:

You can modify the configuration time or switch on/off time

for a particular time segment.

You can edit configured time interval (MI).

The current value of the threshold trigger

In parameter mode, the view of threshold trigger:

You can alter the threshold values for on/off.

Set Password

You can set a password to protect your program within the xLogic CPU.

Programmable Relay ● User Manual for ELC and PR Series 30 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

Set a new password:

A password contains up to 4 characters and each character is a number from 0 to 9. You can specify, edit or remove a password directly in xLogic using the “Password” menu of the function page:

You should first select a FUNCTION PAGE. (Read 4.3)

1. Move the cursor to “Password” by pressing the “UP” or “DOWN” key.

2. Confirm “Password”: Press OK key.

Example: Let’s set “1234” as the password for a program. Now the LCD displays the following interface:

Select “New” option, and then edit it.

Now display:

10. Confirm password: press OK key.

Now, the program is protected by the password of “1234”, and then you can return to the main menu.

NOTICE: You can cancel a password newly-set by pressing the

ESC key. In this instance, xLogic will return to the main menu without saving the password. This password protects unauthorised changes to ay parameters, which means that to make any changes via the LCD, the password is required. The program password should be set in xLogicsoft by the menu File->Property-> Parameter to protect the program itself from unauthorised changes/copying.

3. Select “1”: press “UP” key once.

4. Move the cursor to the next character: press “Right” key.

5. Select “2”: press “UP” key twice.

6. Move the cursor to the next character: press “Right” key.

7. Select”3”: press “UP” key three times.

8. Move the cursor to the next character: press “Right” key.

9. Select “4”: press “UP” key four times.

Modify password:

To modify the password, you are required to enter the current password first.

In the menu of the FUNCTION PAGE:

1. Move the cursor to “Password”: Press “UP” or “DOWN”

key.

2. Confirm “Password”: Press OK key.

Select “Old” and input current password (in our instance is “1234”), the process is the same as the step 3 to step 10 mentioned above.

LCD displays:

Programmable Relay ● User Manual for ELC and PR Series 31 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

Select “New” to input new password such as “8888”:

3. Select “8”: press “UP” key.

4. Move the cursor to the next character: press “Right” key.

Repeat the step 3 and 4 to enter the third and fourth characters.

LCD displays:

5. Confirm new password by pressing the OK key.

How to remove the password:

If you need to remove the password e.g. allow the other users to edit your program, then you must know the current password. The process for removing a password is the same as that for modifying it.

In the menu of the FUNCTION PAGE:

1. Move the cursor to “Password”: Press “UP” or “DOWN” key.

Password settings in xLogicsoft.

The menu File->Properties (Parameter)

2. Confirm “Password”: Press OK key.

Select “Old” and input current password (in our instance is “8888”), the process is the same as the step 3 to step 10 mentioned above.

LCD displays as follows:

Input nothing under the “New” and press OK to clear the password.

4. Confirm “blank” password: press OK key. Now you have cleared the password and can return to the main menu. If you want to set a password next time, repeat steps above in 4.3.3.

There are 2 password settings which can be applied to the program, one is the program password and the other is the parameter password.

Program password:

If you set the program password, then the password is required when you want to upload the program to PC.

Parameter password:

If you set the parameter password, then the password is required when you want to change parameters via the LCD.

Programmable Relay ● User Manual for ELC and PR Series 32 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

NOTICE:

1.The password which can be set in the LCD menu is the parameter password.

2.The program password cannot be set in the LCD menu, it can only be set in xLogicsoft.

How to Set the Address of a CPU and Expansion Modules

Setting the CPU Address

If there is more than one CPU in a communication network, then the address of each CPU must be different. You can change the address of CPU via xLogicsoft or via the panel key if the CPU with LCD panel. The address range is from 1 to 247 for ELC and PR series CPUs.

You can set the CPU address by the menu Tools-> transfer-> set PLC’s address in xLogicsoft.

Confirm with "OK"

Change the address with arrow keys and confirm with "OK".

The CPU address can also be set by xLogicsoft if the CPU is without HMI.

Set Address of PR-Expansions. (PR-E-16DC-DA-R, etc.)

Plastic Cover

Using a screwdriver, remove the plastic cover and to reveal dip switches.

Set the dip switches to achieve the address you require as detailed below.

Up to 16 expansion units (includes IO, AQ, AI, PT100 modules) can be connected to the CPU.

Figure 30 Expansion Address Dip Switches

Programmable Relay ● User Manual for ELC and PR Series 33 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

The default address of PR-E expansions is 1 and the dip switches are set as below ( means the switch position):

Address 1: Address 2: Address 3:

Address 4: Address 5: Address 6:

Address 7: Address 8: Address 9:

Address 10: Address 11: Address 12:

Address 13: Address 14: Address 15:

Address 16:

2. Select “Set LCD” menu and click “OK”

3.Select "Backlight” menu and click "OK"

NOTICE:

1. The expansion unit address MUST be set before power is applied otherwise the settings will not take effect.

2. You can freely mix both AC and DC CPUs and expansion units.

3. If the communication is established between CPU and expansion units, the LED indicator on the top of the expansion units will turn to RUN (Green). (If the LED is red, it means the CPU cannot communicate with it).

4. If more than one expansion module is connected to CPU at the same time, the address of each expansion module must be different from each other, otherwise, the system (CPU + expansions) would run abnormally. As long as each expansion unit has a unique address, they can be connected in any order whatsoever.

Setting LCD Backlight and Contrast

The backlight of CPU can be set with an “ON” time of 10 seconds or “ON” all the time. This is set as follows:

1. Select “Set...” menu and click OK.

4. The default is 10 seconds, and another option is "Always On". Confirm with "OK"

Modify the contrast

Confirm with "OK"

Programmable Relay ● User Manual for ELC and PR Series 34 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

Modify the contrast with Left or Right key and confirm with "OK".

Set Communication Parameters

Select "Set Com" menu from the menu "Set...”.

Confirm with "Ok"

Confirm with "OK"

Change it by pressing Up and Down keys.

And confirm with "OK"

Set Modbus Protocol

COM0: RS232 port or programming port.

COM1: RS485 port (For the PR-RS485 expansion module when connected to PR-14, PR-18, PR-24, ELC-18, ELC-22, ELC-26 CPU)

COM2: Built-in RS485 port for PR-14 and PR-24 CPU.

COM3: Ethernet port for ELC-22-N CPU, reserved for other series CPU.

Confirm with "OK"

Figure 31 Set Modbus Port

Programmable Relay ● User Manual for ELC and PR Series 35 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

Change with the Up and Down keys and confirm with "OK"

There are 4 options available: RTU, ASCII, TCP RTU, TCP ASCII.

NOTICE: If you want to use the Modbus TCP protocol, select

the "TCP RTU".

Setting System Date and Time

You should first select the FUNCTION PAGE. (see 15.1)

1. Move the cursor to “Clock” by pressing “UP” or “DOWN”

key.

2. Confirm “Clock”: Press OK key.

Figure 32 Set Date and Time

To set the time, move the cursor to” Set Time” menu, then press the OK key.

Here you can set the weekday (From Monday to Sunday) and the clock. The method is setting the time. After completion of your setup, press OK key:

Press OK key to set and modify date.

Press “UP” or “DOWN” key to change the date to what you want to set. After you have finished your setting, press OK key to return to Date/Time menu.

Press ESC key and return to FUNCTION PAGE.

Programmable Relay ● User Manual for ELC and PR Series 36 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

6. Configuring and Programming Rievtech Hardware

Programming your hardware is done using the xLogicsoft software package, which is FREE and designed to be installed on a Windows PC. The software utilises a method of programming called Function Block Diagrams (FBD). FBD is an easy to use and user-friendly programming environment. A program is created by dropping pre-programmed blocks onto a workspace area and connecting the blocks together to create your control program.

The xLogicsoft programming software allows the user to create a self-documenting, user-friendly program and to simulate your program on your PC without the need for a Rievtech PLC. Here are some of the features available in xLogicsoft software:

 Modern graphical block representation.  A friendly graphical user interface for the creation of

your circuit program by use of FBD blocks.

 Off-line simulation of your logic on your PC.  Automatic generation of chart documentation for

printing.

 Ability to add comments to your circuit program.  Download and upload your program to/from your

Rievtech PLC CPU.

 On-line debug mode allowing you to view the status

of inputs and outputs, block values and timer values.

 Ability to Start and Stop your program via the PC.  Ability to create your own blocks from the standard

blocks available.

6.1. xLogicsoft Functions

The ELC and PR-Series of Rievtech CPUs can be programmed using FBD, which includes a variety of preconfigured function blocks:

 16 Co - Constant Blocks  9 GF - Basic Function Blocks  49 SF - Special Function Blocks  15 AP – App Function Blocks  MQ – MQTT Function Blocks  Add Your Own Library Blocks

By adding these blocks to your program and linking them together, you can create relatively complex control programs. This manual will describe each available block in detail in the following sections.

Blocks are placed into your work area by selecting them from the left-hand block list in xLogicsoft and clicking anywhere in your workspace to the right of the block list.

Blocks are connected to each other by clicking on either the input or output pin of the block (a chain icon will appear) and without releasing the mouse button, drag the connector to the block-pin you wish to link to (a chain icon will appear), then let go of the mouse button. We are continuingly adding features to our software and should you need a new special function block which currently does not exist in xLogicsoft, then let us know and we will look at adding it. Contact:

technical@rievtech.com.

Programmable Relay ● User Manual for ELC and PR Series 37 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

PR-6

PR-12

PR-14

PR-18

ELC-22

PR-24

6.2. General Input and Output Functions

Digital Input

Digital input blocks represent the physical digital input terminals of your Rievtech CPU and expansion units if fitted. The following table list the maximum number of digital inputs that a CPU can support.

Table 11 Maximum Digital Inputs per CPU

CPU

To configure a digital input block which has been placed in your workspace, double-click on it to open the blocks configuration options.

MAXIMUM DIGITAL INPUTS

Cursor keys

Up to four cursor keys are available to you. Cursor keys are programmed for the circuit program in the same way as other inputs. Cursor keys can save switches and inputs and allow operator control of the circuit program.

Switch the screen to the current page (above shows) by pressing the Left or Right key, and press ESC key and arrow keys at the same time, then the corresponding cursor keys will turn on and give off a high trigger!

Digital Output

Figure 40 - Digital Input Block Configuration

If the input is on the main CPU then you can select it using the Input drop-down box. Only available inputs will be shown.

If the digital input is in an expansion module, then select the radio button for Ext. Module and use the drop-down box to select which expansion block number, followed by the digital input number.

NOTICE: I12 means digital input 2 on expansion address 1, I81

means digital input 1 on expansion address 8.

Output blocks represent the output terminals of xLogic. You can use up to 2 outputs (ELC-6), 4 outputs (PR-12),70 outputs (PR-18), 72 outputs (PR-22), 74 outputs (PR-26). In your block configuration, you can assign an output block to a new terminal, provided this terminal is not already used in your circuit program.

The output always carries the signal of the previous program cycle. This value does not change within the current program cycle.

NOTICE: Q11 means the Q1 output of the expansion with

address 1.

Q85 means the Q5 output of the expansion with

address 8.

Permanent Logical Levels HI and LO

Set the block input to logical hi (hi = high) to set it permanently to logical '1' or 'H' state.

Programmable Relay ● User Manual for ELC and PR Series 38 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

Set the block input to logical lo (lo = low) to set it permanently to logical '0' or 'L' state.

Panel Key

It is the symbol for the Function key on the CPU panel (F1— F4) where fitted. If one of the function keys is pressed down, the status of the corresponding symbol in the program shall turn from 0 to 1. This will give off one high trigger.

You can use up to 36 analogue inputs. In your block configuration, you can assign a new input terminal to an input block, provided this terminal is not already used in the circuit program.

NOTICE:

1. Only one function key can be pressed down at any one time. If you press down two or more at the same time, xLogic will not process the keystrokes.

2. If the arrow keys (UP, DOWN, LEFT and RIGHT), Esc and OK had been applied to the program, then they would be invalid for menu operation (e.g. manual programming, parameters modification and view alarming message etc).

Shift Register Bits

For help on analogue block parameter, refer to Information on analogue value processing.

NOTICE: AI11 means the AI1 input of the expansion with

address 1.

AI82 means the AI2 input of the expansion with

address 8.

Based on different analogue input signals, you need select a different sensor type in the analogue blocks, you need to use an analogue amplifier with the AI input, and select the corresponding sensor type for DC0.10V, 0/4.20mA or PT100 input.

xLogic provides the shift register bits S1 to S8, which are assigned the read-only attribute in the circuit program. The content of shift register bits can only be modified by means of the Shift register special function

Analogue Inputs

Programmable Relay ● User Manual for ELC and PR Series 39 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

F (Digital Flag)

Flags are used when xLogic works in a communication system. F is a digital flag which is used to save /transfer signal 1 or 0 (data format is Bit) and AF is an analogue flag which is

used to save /transfer analogue values (data format is Signed short) between the master and slave devices. Up to 32 (ELC-

6), 128 (PR-12/ELC-22/ELC-26) can be used when

programming. In your block configuration, you can assign a new number to the flag, provided this flag number does not already exist in your circuit program.

The output always carries the signal of the previous program cycle. This value does not change if the communication has failed.

Start-Up Flag: F8

The F8 flag is set in the first cycle of the user program and can thus be used in your circuit program as a start-up flag. It is reset after the first program execution cycle.

In the subsequent cycles, the F8 flag reacts in the same way as the F1 to F64 flags.

Backlight Flag: F64

The F64 flag controls the backlight of the xLogic display or the ELC-43T backlight. You can use the outputs of timers, message texts, or other function blocks to activate the backlight flags. To enable multiple conditions to control the backlight of the devices, you can use multiple function blocks in parallel or in sequence. Buzzer of ELC-43TS control flag: F63

NOTICE:

1. The address of “F“ can be found in the Modbus communication protocol file. The F block figure must have the input pin in the xLogic showing.

2. Keep the input pin of F NULL (do not connect with other blocks) if you want to use the write property.

AF (Analogue Flag)

Flags are used when xLogic works in a communication system. AF is an analogue flag which is used to save /transfer analogue values (data format is Signed short) between the master and slave devices. Up to 32 (PR-6) and 256 (PR12/PR-18/PR-24) for xLogic CPU can be used when programming. In your block configuration, you can assign a new number to the analogue flag, provided this flag number does not already exist in your circuit program.

The output always carries the signal of the previous program cycle. This value does not change if the communication were to fail.

NOTICE:

1. The address of “AF“ can be found in the Modbus communication protocol file.

2. Keep the input pin of AF NULL (do not connect with other blocks) if you want to use the Write property.

You can set a start value for the AF1—AF64 (PR-12/PR18/PR-24), and the value does not get lost if the power was a failure, so you can use such AF in your program as a number input from the touchscreen or the panel key of the CPU.

NOTICE:

1. AF65--AF256 does not support a Start Value function, and the values of AF65 to AF256 will be lost if the power fails.

2. If you enable the "start value option" of AF, then you are not allowed to connect any other function to the input leg of the AF.

3. If you connect the input leg of the AF block to other function blocks, the "start value" will not be available anymore.

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6.3. Basic Functions List – GF

Basic functions represent simple logical elements of Boolean algebra.

You can invert the inputs of individual basic functions, i.e. The circuit program inverts a logical “1” at a relevant input to a logical “0”; if “0” is set at the input, the program sets a logical “1” and vice versa.

The GF list contains the basic function blocks you can use for your circuit program. The following basic functions are available:

Table 12 Basic functions

View in the

circuit diagram

View in

xlogicsoft

Name of the basic

function

AND

AND with edge

evaluation

NAND (Not AND)

NAND with edge

evaluation

AND

Description of function

The output of an AND function is only 1 if all inputs are 1, i.e. when they are closed.

A block input that is not used (x) is assigned: x = 1.

Table 13 AND Block Logic

Input1 Input2 Input 3 Input 4 Output

0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 1 1 0 0 1 0 0 0 0 1 0 1 0 0 1 1 0 0 0 1 1 1 0 1 0 0 0 0 1 0 0 1 0 1 0 1 0 0 1 0 1 1 0 1 1 0 0 0 1 1 0 1 0 1 1 1 0 0 1 1 1 1 1

AND with Edge Evaluation

BOOLEAN

FUNCTION

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NOR (Not OR)

XOR (exclusive OR)

NOT (negation,

inverter)

BOOLEAN FUNCTION

Description of function

The output of an AND with edge evaluation is only 1 if all inputs are 1 and at least one input was 0 during the last cycle.

The output is set to 1 for the duration of one cycle and must be reset to 0 for the duration of the next cycle before it can be set to 1 again.

A block input that is not used (x) is assigned: x = 1.

0 0 0 0 1

0 0 0 1 1

0 0 1 0 1

0 0 1 1 1

0 1 0 0 1

0 1 0 1 1

0 1 1 0 1

0 1 1 1 1

1 0 0 0 1

1 0 0 1 1

1 0 1 0 1

1 0 1 1 1

1 1 0 0 1

1 1 0 1 1

1 1 1 0 1

1 1 1 1 0

0 0 0 0 0

0 0 0 1 1

0 0 1 0 1

0 0 1 1 1

0 1 0 0 1

0 1 0 1 1

0 1 1 0 1

0 1 1 1 1

1 0 0 0 1

1 0 0 1 1

1 0 1 0 1

1 0 1 1 1

1 1 0 0 1

1 1 0 1 1

1 1 1 0 1

1 1 1 1 1

The timing diagram of an AND with edge evaluation

NAND

Description of function

The output of a NAND function is only 0 if all inputs are 1, i.e. when they are closed.

A block input that is not used (x) is assigned: x = 1.

The output of a NAND with edge evaluation is only 1 at least one input is 0 and all inputs were 1 during the last cycle.

The output is set to 1 for the duration of one cycle and must be reset to 0 at least for the duration of the next cycle before it can be set to 1 again.

A block input that is not used (x) is assigned: x = 1.

The timing diagram of a NAND with edge evaluation

Table 14 NAND Block Function

Input1 Input2 Input 3 Input 4 Output

Description of function

The output of an OR is 1 if at least one input is 1 (closed).

A block input that is not used (x) is assigned: x = 0.

Table 15 OR Block Logic

Input1 Input2 Input 3 Input 4 Output

NAND with Edge Evaluation

Description of function

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0 0 0 0 1

0 0 0 1 0

0 0 1 0 0

0 0 1 1 0

0 1 0 0 0

0 1 0 1 0

0 1 1 0 0

0 1 1 1 0

1 0 0 0 0

1 0 0 1 0

1 0 1 0 0

1 0 1 1 0

1 1 0 0 0

1 1 0 1 0

1 1 1 0 0

1 1 1 1 0

0 0 0

0 1 1

1 0 1

1 1 0

NOR

Description of function

The output of a NOR (NOT OR) is only 1 if all inputs are 0, i.e. when they are open. When one of the inputs is switched on (logical 1 state), the output is switched off.

A block input that is not used (x) is assigned: x = 0.

Table 16 NOR Block Logic

Input1 Input2 Input 3 Input 4 Output

NOT

Description of function

The output is 1 if the input is 0. The NOT block inverts the input status.

The advantage of the NOT, for example, xLogic no longer requires break contacts. You simply use a make contact and convert it into a break contact with the help of the NOT function.

Table 17 NOT Function Logic

Input1 Output

Boolean Function

XOR

Description of function

The XOR (exclusive OR) output is 1 if the signal status of the inputs is different.

A block input that is not used (x) is assigned: x = 0.

Table 17 XOR Function Logic

Input1 Input2 Output

Description of function

The BOOLEAN function gives the value of the output according to the combination of inputs.

The function has four inputs, and therefore 16 combinations. These combinations can be found in a truth table; for each of these, the output value can be adjusted. The number of configurable combinations depends on the number of inputs connected to the function.

Non-connected inputs are set to 0.

The following diagram shows an example of part of the Boolean function truth table:

Table 18 Boolean Function Logic (Example of Output states)

Index Input1 Input2 Input 3 Input 4 Output

1 0 0 0 0 1 2 0 0 0 1 1 3 0 0 1 0 1 4 0 0 1 1 0 5 0 1 0 0 1 6 0 1 0 1 1 7 0 1 1 0 1 8 0 1 1 1 1

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A signal at input S sets the output

The reset input R takes priority over

This input is used to trigger the

Cnt

This input is used for counting

Fre

Frequency signals to be evaluated

Dir

This input determines the direction

En (Enable)

This input enables a block function.

A signal at this input inverts the

Ral (Reset

9 1 0 0 0 1 10 1 0 0 1 0 11 1 0 1 0 0 12 1 0 1 1 0 13 1 1 0 0 0 14 1 1 0 1 1 15 1 1 1 0 0 16 1 1 1 1 0

Parameters

Having connected at least one input, you can configure the value of the output in the truth table, in the Parameters window.

The output values can be 0 for the Inactive state, and 1 for the Active state (Double click to change the 0 or 1).

By selecting the Output ON if the result is TRUE, the output takes the value configured in the truth table.

By selecting the Output OFF if the result is TRUE, the output takes the inverse value of the value configured in the truth table.

Table 19 Logical Input types

Name Description Image

S (Set)

R (Reset)

Trg (Trigger)

(Count):

(Frequency)

(Direction)

Validation

Inv (Invert)

all):

Value Integer value

all other inputs and resets the

When this input is “0”, other signals

to logical “1”.

outputs.

start of a function.

are applied to this input.

of count.

to the block will be ignored.

output signal of the block.

All internal values are reset.

pulses.

Parameter inputs

For some of the inputs, you do not apply any signals. You configure the relevant block values instead. Examples:

6.4. Basics of Special Functions - SF

Because of their different input designation, you can see right away that there is a difference between the special functions (SF) and basic functions. SF’s contain timer functions, retentive functions and various parameter assignment options, which allow you to adapt the circuit program to suit your own requirements.

This section provides you with a brief overview of input designations and with some particular background information on SF’s. The SF’s, in particular, are described in Chapter 5.5

Designation of the Inputs to Blocks

Logical inputs

Here, you will find the description of the connectors you can use to create a logical link to other blocks or to the inputs of the xLogic unit.

Par (Parameter):

This input will not be connected. Here, you set the relevant block parameters (times, on/off thresholds etc.).

No (Cam):

This input will not be connected. Here, you configure the time patterns.

P (Priority):

This is an open input. Here, you define priorities and specify whether a message is to be acknowledged during RUN time.

Time Response

Parameter T

In some of the SFs it is possible to configure a time value T. When you pre-set this time, your input values are based on the time base set:

Time base -- : --

s (seconds) Seconds : 1/100 seconds

m (minutes) Minutes : seconds

h (hours) Hours : minutes

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Accuracy of T

Because of slight tolerances in the characteristics of electronic components, the set time T may deviate. The xLogic has a maximum tolerance of ± 0.02 %. When 0.02 % of the time T is smaller than 0.02 seconds, the maximum deviation is 0.02 seconds.

Example: The maximum tolerance per hour (3600 seconds) is ±0.02%, which is proportional to ± 0.72 seconds. The maximum tolerance per minute (60 seconds) is ± 0.02 seconds.

The accuracy of the timer (weekly/yearly timer)

The maximum timing inaccuracy is ± 5 s/day.

Backup of the Real-time Clock

Because the internal real-time clock of a CPU is backed up, it continues operation after a power failure. The ambient temperature influences the backup time. At an ambient temperature of 25°C, the typical backup time of a CPU is 100 hours.

Retentivity

0/4…20mA) at input AI is transformed internally into a range of values from 0 to 1000. An input voltage exceeding 10 V is shown as internal value 1000.

Because you cannot always process the range of values from 0 to 1000 as predetermined by xLogic, you can multiply the digital values by a gain factor and then shift the zero of the range of values (offset). This allows you to output an analogue value to the xLogic display, which is proportional to the actual process variable.

Table 20 Gain and Offset

Parameter Minimum Maximum

Input voltage (in V) 0 ≤10

Input current (in mA) 0/4 ≤20

Internal value 0 1000

Gain –10.00 +10.00

Offset –10000 +10000

Mathematical rule

Equation 1 Offset and Gain

The switching states and counter values of SFs can be set to be retentive. This means that current data is retained after a power failure and that the block resumes operation at the point at which power was lost. The timer is not reset but resumes operation until the time-to-go has expired, for example, to enable this response, however, the relevant functions must be set retentive.

SFs hours counter, weekly timer, yearly timer and PI controller are always retentive.

Parameter Protection

In the parameter protection settings, you can determine whether or not the parameters can be displayed and edited in xLogic parameter assignment mode. Two options are available:

- The parameter attribute permits read/write access in parameter assignment mode(default).

- The parameter settings are read–/write–protected in parameter assignment mode and can be edited only via xLogicSoft.

Calculating the Gain and Offset of Analogue Values

A sensor is connected to the analogue input and converts a process variable into an electrical signal. This value of signal lies within the typical range of this sensor. xLogic always converts the electrical signals at the analogue input into digital values from 0 to 1000. A voltage of 0 to 10 V (or current signal

Actual value Ax = (internal value at input Ax * gain) + offset

Gain and offset calculation

The gain and offset are calculated based on the relevant high

and low values of the function.

Example 1:

The available thermocouples have the following technical

data:

–30 to +70 ℃, 0 to 10 V DC (i.e. 0 to 1000 in xLogic).

Actual value

–30 = (0 ∙A) + B, i.e. offset B = –30

+70 = (1000 ∙A) –30, i.e. gain A = 0.1

Example 2:

A pressure sensor converts a pressure of 1000 mbar into a voltage of 0 V, and a pressure of 5000 mbar into a voltage of 10 V.

Actual value

1000 = (0·A) + B, i.e. offset B = 1000

5000 = (1000 ∙A) +1000, i.e. gain A = 4

= (internal value ∙gain) + offset, thus

= (internal value. gain) + offset, thus

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1000

3700

5000

Timer

Counter

Example of analogue values

Process variable

–300 C 0 0

00 C 3 300

+700 C 10 1000

mbar

Voltage

(V)

6.75 675 4 1000 3700

10 1000 4 1000 5000

0 0 0.01 0 0 5 500 0.01 0 5 10 1000 0.01 0 10 0 0 1 0 0 5 500 1 0 500 10 1000 1 0 1000 0 0 10 0 0 5 500 10 0 5000 10 1000 10 0 10000 0 0 0.01 5 5 5 500 0.01 5 10 10 1000 0.01 5 15 0 0 1 500 500 5 500 1 500 1000 10 1000 1 500 1500 0 0 1 –200 –200 5 500 1 –200 300 10 1000 1 –200 800 0 0 10 10 1000 10

0.02 2 0.01 0 0

0.02 2 0.1 0 0

0.02 2 1 0 2

0.02 2 10 0 20

Internal

value

0 0 4 1000 1000

Gain Offset

0.1

–30 –30 –30 0 –30 70

–10000 –10000

6.5. Special functions list – SF

Value

shown (Ax)

–10000

Table 21 SF - Special Functions List

View in xLogic Name of the special function

On-delay

Off-delay REM

On-/Off-delay

Retentive on-delay

Wiping relay (pulse out)

Edge triggered wiping relay REM

Asynchronous pulse

generator

Random generator

Stairway lighting switch

Multiple function switch

Weekly Timer

Yearly timer

Up/down counter

Hours counter

Rem

REM

When you create your circuit program in xLogicsoft, you find the special function blocks in the SF list.

You can invert the inputs of SF’s individually, i.e. the circuit program converts a logical “1” at the input into a logical “0”; a logical “0” converts to logical “1”. The table also specifies whether the relevant function can be set retentive (Rem). The following SF’s are available:

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Threshold trigger

Analogue

Analogue Threshold Trigger

Analogue Differential Trigger

Analogue Comparator

Analogue Watchdog

Analogue Amplifier

Analogue Multiplexer

Average Value

Analogue Math

Long Datas Math

Analogue Ramp

PI Controller

Max/Min

Analogue Filter

Analogue Math Error

Miscellaneous

Detection

Shift Register

PWM (Pulse-Width

Modulation)

Data Latching Relay

Long Data Latching Relay

Modbus Read

Modbus Write

Modbus Read Write

Memory Write

Memory Read

Word to Bit

Bit to Word

Device Reset

Comport Status

RH Math

APP

REM

Latching Relay

Pulse Relay

Message Texts

Softkey

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Cam Control Block

Angular Cam Timer

Pumps Management

REM

On-Delay

Defrost

Comparison of 2 values

Multicompare

Compare in Zone

Convert Word to Bits

Convert Bits to Word

Description of function

The output is not switched on until a configured delay time has expired.

Connection Description

Trg input ( )

Parameter

Output Q

The on-delay time is triggered via the Trg (Trigger) input

T represents the on-delay time after which the output is switched on (output signal transition 0 to 1).

Retentivity on = the status is retentive in memory.

Q switches on after a specified time T has expired, provided Trg is still set.

Demultiplexer

Multiplexing

Multiplexer

Square root

Sin Cos

Absolute Humidity

Parameter T

The time for parameter T can also be pre-set based on the actual value of another, already-configured function. You can use the actual values of the following functions:

Analog comparator (Ax – Ay) Analog threshold trigger (Ax)

Analog amplifier (Ax) Analog multiplexer (AQ)

Analog ramp (AQ) Mathematic instruction (AQ)

PI controller (AQ) Up/down counter (Cnt)

Analog filter (AQ) Average value (AQ)

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s (seconds)

99:99 10 ms

± 10 ms

m (minutes)

99:59 1s

± 1 s

h (hours)

99:59 1 min

± 1 min

99990

Number of ms

± 10 ms

5999

Number of s

± 1 s

5999

Number of min

± 1 min

Max/Min (AQ) On-delay (Ta)

Off-delay (Ta) On-/off-delay (Ta)

Retentive on-delay (Ta) Wiping relay(pulse output) (Ta)

Edge triggered wiping relay (Ta)

Asynchronous pulse generator (Ta)

Stairway light switch (Ta) Multiple function switch (Ta)

Stopwatch (Ta)

You select the required function via the block number. The time-base can be adjusted.

The value of “T” can be set/modified in parameter mode. For information about how to modify，refer to chapter 5.2.2, please.

For information on the validity and accuracy of the time base, refer to the xLogic time-base list as follows:

Valid ranges of the time-base, if T = parameter

Time-base Max. value Min. resolution

Accuracy

Valid ranges of the time base, if T = Actual value of an already-programmed function

The time is reset if the status at input Trg changes to 0 again before the time T has expired.

The output is reset to 0 when input Trg is 0.

Off-Delay

Description of function

The output with off delay is not reset until a defined time has expired.

Connection Description

Start the off-delay time with a negative

Trg input ( )

edge (1 to 0 transition) at input Trg (Trigger)

Reset the off-delay time and set the

Input R ( )

output to 0 via the R (Reset) input. Reset has priority over Trg

T: The output is switched off on the expiration of the delay time T (output

Parameter

signal transition 1 to 0). Retentivity on = the status is retentive

in memory.

Output Q

Q is switched on for the duration of the time T after a trigger at input Trg.

Time-base Max. value

Meaning

Accuracy

Timing diagram

The time Ta (the current time in xLogic) is triggered with the 0 to 1 transition at input Trg.

If the status at input Trg stays 1 at least for the duration of the configured time T, the output is set to 1 when this time has expired (the on-signal of the output follows the on-signal of the input with delay).

Parameter

The time set in parameter T can be supplied by the value of another already-programmed function:

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Analog comparator (Ax – Ay) Analog threshold trigger (Ax)

Analog amplifier (Ax) Analog multiplexer (AQ)

Analog ramp (AQ) Mathematic instruction (AQ)

PI controller (AQ) Up/down counter (Cnt)

Analog filter (AQ) Average value (AQ)

Max/Min (AQ) On-delay (Ta)

Off-delay (Ta) On-/off-delay (Ta)

Retentive on-delay (Ta) Wiping relay(pulse output) (Ta)

Edge triggered wiping relay (Ta)

Asynchronous pulse generator (Ta)

Stairway light switch (Ta) Multiple function switch (Ta)

Stopwatch (Ta)

The value of “T” is set/modified in parameter mode. For information about how to modify, refer to chapter 5.2.2, please.

Select the required function by the block number. The time base is configurable.

On/Off-Delay

Description of function

The on/off delay function is used to set an output after a configured-on delay time and then reset it again upon expiration of a second configured time.

Connection Description

You trigger the on delay with a

Trg input ( )

positive edge (0 to 1 transition) at input Trg (Trigger).

TH is the on-delay time for the output (output signal transition 0 to 1).

Parameter

TL is the off-delay time for the output (output signal transition 1 to 0).

Retentivity on = the status is retentive in memory.

Q is switched on upon expiration of a configured time TH if Trg is still set. It

Output Q

is switched off again upon expiration of the time TL and if Trg has not been set again.

For information on valid time base ranges and parameter preset, refer to chapter 4.4.1 the On-delay topic.

Timing diagram

Output Q is set to 1 momentarily with a 0 to 1 transition at input Trg. At the 1 to 0 transition at input Trg, xLogic retriggers the current time T, and the output remains set. The output Q is reset to 0 when Ta reaches the value specified in T (Ta=T) (off delay).

A one-shot at input Trg retriggers the time Ta.

You can reset the time Ta and the output via the input R (Reset) before the time Ta has expired.

If retentivity is not set, output Q and the expired time are reset after a power failure.

Parameter

The on-delay time and off-delay time set in parameter TH and TL can be provided by the actual value of another alreadyprogrammed function:

Analog comparator (Ax – Ay) Analog threshold trigger (Ax)

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Analog amplifier (Ax) Analog multiplexer (AQ)

Analog ramp (AQ) Mathematic instruction (AQ)

PI controller (AQ) Up/down counter (Cnt)

Analog filter (AQ) Average value (AQ)

Max/Min (AQ) On-delay (Ta)

Off-delay (Ta) On-/off-delay (Ta)

Retentive on-delay (Ta) Wiping relay(pulse output) (Ta)

Edge triggered wiping relay (Ta)

Asynchronous pulse generator (Ta)

Stairway light switch (Ta) Multiple function switch (Ta)

Stopwatch (Ta)

The value of “TH” and “TL” is set/modified in parameter mode. For information about how to modify, refer to chapter 7.2.2, please.

For information on the validity and accuracy of the time base, refer to 7.4.2

Timing diagram

Retentive On-Delay

Description of function

A one-shot at the input triggers a configurable time. The output is set upon expiration of this time.

Connection Description

Trg input ( )

Trigger the on-delay time via the Trg (Trigger) input.

Reset the time on delay time and

Input R ( )

reset the output to 0 via input R (Reset).

The reset takes priority over Trg. T is the on-delay time for the output

Parameter

Output Q

(output signal transition 0 to 1). Retentivity on = the status is retentive

in memory. Q is switched on upon expiration of

the time T.

The time TH is triggered with a 0 to 1 transition at input Trg.

If the status at input Trg is 1 at least for the duration of the configured time TH, the output is set to logical 1 upon expiration of this time (output is on delayed to the input signal).

The time TH is reset if the status at input Trg is reset to 0 before this time has expired.

Parameter

The time TL is triggered with the 1 to 0 transition at the output.

The time in parameter T can be provided by the value of

If the status at input Trg remains 0 at least for the duration of

another already-programmed function:

a configured time TL, the output is reset to 0 upon expiration of this time (output is off delayed to the input signal).

The time TL is reset if the status at input Trg returns to 1 before this time has expired.

Analog comparator (Ax – Ay) Analog threshold trigger (Ax)

Analog amplifier (Ax) Analog multiplexer (AQ)

Analog ramp (AQ) Mathematic instruction (AQ)

PI controller (AQ) Up/down counter (Cnt)

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Retentivity set (on) = the status is

Analog filter (AQ) Average value (AQ)

Max/Min (AQ) On-delay (Ta)

Off-delay (Ta) On-/off-delay (Ta)

Retentive on-delay (Ta) Wiping relay(pulse output) (Ta)

Edge triggered wiping relay (Ta)

Asynchronous pulse generator (Ta)

Stairway light switch (Ta) Multiple function switch (Ta)

Output Q

retentive in memory. A pulse at Trg sets Q. The output

stays set until the time T has expired and if Trg = 1 for the duration of this time. A 1 to 0 transition at Trg prior to the expiration of T also resets the output to 0.

Stopwatch (Ta)

The value of “T” can be set/modified in parameter mode. For information about how to modify, refer to chapter 5.2.2, please.

Timing diagram

The current time Ta is triggered with a 0 to 1 signal transition at input Trg. Output Q is set to 1 when Ta reaches the time T. A further pulse at input Trg does not affect Ta.

The output and the time Ta are only reset to 0 with a ‘1’ signal at input R.

If retentivity is not set, output Q and the expired time are reset after a power failure.

Wiping Relay (pulse output)

Parameter

The off-time T can be provided by the actual value of another already-programmed function:

Analog comparator (Ax – Ay) Analog threshold trigger (Ax)

Analog amplifier (Ax) Analog multiplexer (AQ)

Analog ramp (AQ) Mathematic instruction (AQ)

PI controller (AQ) Up/down counter

Description of function

An input signal generates an output signal of a configurable length.

Connection Description

Trg input ( )

You trigger the time for the wiping relay with a signal at input Trg (Trigger)

(Cnt)

Analog filter (AQ) Average value (AQ)

Max/Min (AQ) On-delay (Ta)

Off-delay (Ta) On-/off-delay (Ta)

Retentive on-delay (Ta) Wiping relay(pulse output) (Ta)

Edge triggered wiping relay (Ta)

TL represents the time after which the

Parameter

output is reset (output signal transition

Asynchronous pulse generator (Ta)

1 to 0).

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Stairway light switch (Ta) Multiple function switch (Ta)

Stopwatch (Ta)

The value of “TL” can be set/modified in parameter mode. For information about how to modify, refer to chapter 5.2.2, please.

Timing diagram

With the input signal Trg = 1, output Q is set to 1. The signal also triggers the time Ta, while the output remains set.

When Ta reaches the value defined at T (Ta=T), the output Q is reset to 0 state (pulse output).

If the signal at input Trg changes from 1 to 0 before this time has expired, the output is immediately reset from 1 to 0.

Output Q is set when the time TL has

Output Q

expired and is reset when TH has expired.

Parameter

The pulse width TH and the inter-pulse width TL can be provided by the actual value of another already-programmed function:

Edge Triggered Wiping Relay

Description of function

An input pulse generates a pre-set number of output pulses with a defined pulse/pause ratio (retriggerable) after a configured delay time has expired.

Connection Description

You trigger the times for the Edge-

Trg input ( )

triggered wiping relay with a signal at input Trg (Trigger).

Input R ( )

The output and the current time Ta are reset to 0 with a signal at input R.

TL, TH: The inter-pulse period TL and the pulse period TH are adjustable.

N determines the number of

Parameter

pulse/pause cycles TL / TH: Value range: 1...9. Retentivity set (on) = the status is

retentive in memory

Analog comparator (Ax – Ay) Analog threshold trigger (Ax)

Analog amplifier (Ax) Analog multiplexer (AQ)

Analog ramp (AQ) Mathematic instruction (AQ)

PI controller (AQ) Up/down counter (Cnt)

Analog filter (AQ) Average value (AQ)

Max/Min (AQ) On-delay (Ta)

Off-delay (Ta) On-/off-delay (Ta)

Retentive on-delay (Ta) Wiping relay(pulse output) (Ta)

Edge triggered wiping relay (Ta)

Asynchronous pulse generator (Ta)

Stairway light switch (Ta) Multiple function switch (Ta)

Stopwatch (Ta)

The value of “TH” and ”TL” can be set/modified in parameter mode. For information about how to modify, refer to chapter

5.2.2, please.

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Timing diagram

TL = 0; N = 1

With the change at input Trg to 1, the time TL (time low) is triggered. After the time TL has expired, output Q is set to 1 for the duration of the time TH (time high).

If input Trg is retriggered prior to the expiration of the preset time (TL + TH), the time Ta is reset, and the pulse/pause period is restarted.

If retentivity is not set, output Q and the time are reset after a power failure.

Parameter

Asynchronous Pulse Generator

Description of function

The pulse shape at the output can be modified via a configurable pulse/pause ratio.

Connection Description

You enable/disable the asynchronous

Input En ( )

pulse generator with the signal at input En.

The Inv input can be used to invert the

Input Inv

output signal of the active asynchronous pulse generator.

TL, TH: You can customize the pulse

Parameter

(TL)/ pause (TH) ratio. Retentivity set (on) = the status is

retentive in memory.

Output Q

Q is toggled on and off cyclically with the pulse times TH and TL.

The pulse width TH and the inter-pulse width TL can be provided by the actual value of another already-programmed function:

Analog comparator (Ax – Ay) Analog threshold trigger (Ax)

Analog amplifier (Ax) Analog multiplexer (AQ)

Analog ramp (AQ) Mathematic instruction (AQ)

PI controller (AQ) Up/down counter (Cnt)

Analog filter (AQ) Average value (AQ)

Max/Min (AQ) On-delay (Ta)

Off-delay (Ta) On-/off-delay (Ta)

Retentive on-delay (Ta) Wiping relay(pulse output) (Ta)

Edge triggered wiping relay (Ta)

Asynchronous pulse generator (Ta)

Stairway light switch (Ta) Multiple function switch (Ta)

Stopwatch (Ta)

The value of “TH” and “TL” can be set/modified in parameter mode. For information about how to modify, please refer to chapter 5.2.2.

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Timing diagram

You can set the pulse/pause ratio at the TH (Time High) and TL (Time Low) parameters.

The INV input can be used to invert the output signal. The input block INV only inverts the output signal if the block is enabled via EN.

If retentivity is not set, output Q and the expired time are reset after a power failure.

Random Generator

Description of function

The output of a random generator is toggled within a configurable time.

Connection Description

The positive edge (0 to 1 transition) at the enable input En (Enable) triggers

Input En ( )

the on delay for the random generator. The negative edge (1 to 0 transition)

triggers the off delay for the random generator.

TH: The on delay is determined at

Parameter

random and lies between 0 s and TH. TL: The off delay is determined at

random and lies between 0 s and TL. Q is set on, expiration of the on delay

Output Q

if En is still set. It is reset when the offdelay timer has expired and if En has not been set again.

Parameter

The on-delay time TH and the off-delay time TL can be provided by the actual value of another already-programmed function:

Analog comparator (Ax – Ay) Analog threshold trigger (Ax)

Analog amplifier (Ax) Analog multiplexer (AQ)

Analog ramp (AQ) Mathematic instruction (AQ)

PI controller (AQ) Up/down counter (Cnt)

Analog filter (AQ) Average value (AQ)

Max/Min (AQ) On-delay (Ta)

Off-delay (Ta) On-/off-delay (Ta)

Retentive on-delay (Ta) Wiping relay(pulse output) (Ta)

Edge triggered wiping relay (Ta)

Asynchronous pulse generator (Ta)

Stairway light switch (Ta) Multiple function switch (Ta)

Stopwatch (Ta)

The value of “TH” and “TL” can be set/modified in parameter mode. For information about how to modify, refer to chapter

5.2.2, please.

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Timing diagram

With the 0 to 1 transition at input En, a random time (on delay time) between 0 s and TH is set and triggered. If the status at input En is 1 at least for the duration of the On delay, the output is set to 1 when this On delay time has expired.

The time is reset if the status at input En is reset to 0 before the On-delay time has expired.

When input En is reset 0, a random time (off delay time) between 0 s and TL is set and triggered.

If the status at input En is 0 at least for the duration of the offdelay time, the output Q is reset to 0 when the off-delay time has expired.

Output Q

Q is reset after the time T has expired. A warning signal can be output before this time has expired.

The time is reset if the status at input En returns to 1 before the on-delay time has expired.

Stairway Lighting Switch

Description of function

The edge of an input pulse triggers a configurable time. The output is reset when this time has expired. An off warning can be output prior to the expiration of this time.

Connection Description

You trigger the time (off delay) for the

Trg input ( )

stairway switch with a signal at input Trg (Trigger).

T: The output is reset (1 to 0 transition when the time T has expired.

T!: Determines the triggering time for

Parameter

the pre-warning. T!L: Determines the length of the pre-

warning time. Retentivity set (on) = the status is

retentive in memory.

Parameter

The off-delay time T, the pre-warning time T! and the prewarning period T!L can be provided by the actual value of another already-programmed function:

Analog comparator (Ax – Ay) Analog threshold trigger (Ax)

Analog amplifier (Ax) Analog multiplexer (AQ)

Analog ramp (AQ) Mathematic instruction (AQ)

PI controller (AQ) Up/down counter (Cnt)

Analog filter (AQ) Average value (AQ)

Max/Min (AQ) On-delay (Ta)

Off-delay (Ta) On-/off-delay (Ta)

Retentive on-delay (Ta) Wiping relay(pulse output) (Ta)

Edge triggered wiping relay (Ta)

Asynchronous pulse generator (Ta)

Stairway light switch (Ta) Multiple function switch (Ta)

Stopwatch (Ta)

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The value of “T” can be set/modified in parameter mode. For information about how to modify, refer to chapter 5.2.2, please.

Timing diagram

Changing the time base

You can change the pre-warning time base and the period.

Time base T

Pre-warning time

Seconds 750 ms

Minutes 15 s

Hours 15 min

Pre-warning period

50 ms

1 s

1 min

* makes sense only for programs with a cycle time of < 25 ms

Output Q is set to 1 with a 0 to 1 signal transition at input Trg. The 1 to 0 transition at input Trg triggers the current time and output Q remains set.

Output Q is reset to 0 when Ta reaches the time T. Before the off-delay time (T - T!) has expired, you can output a prewarning that resets Q for the duration of the off pre-warning time T!L.

Ta is retriggered (optional) at the next high/low transition at input Trg and if Ta is expiring.

If retentivity is not set, output Q and the expired time are reset after a power failure.

Multiple Function Switch

Description of function

Switched with two different functions:

1. Pulse switch with off delay

2. Switch (continuous light)

Connection Description

With a signal at input Trg (Trigger), you

Trg input ( )

set output Q (continuous light), or reset Q with off delay. Output Q can be reset with a signal at the Trg input.

You set the current time Ta, and reset

Input R ( )

the output to 0, with a signal at input R.

T: The output is reset (1 to 0 transition) when the time T has expired.

TL: Determines the period during which the input must be set in order to enable the permanent light

Parameter

function. T!: Determines the on delay for the

pre-warning time. T!L: Determines the length of the pre-

warning time. Retentivity set (on) = the status is

retentive in memory. Output Q is set with a signal at input

Trg, and it is reset again after a

Output Q

configured time has expired and depending on the pulse width at input Trg, or it is reset with another signal at input Trg.

Setting the Par parameter

NOTICE: All times must have the same time base.

View in parameter assignment mode (example):

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Timing diagram

Parameter

The off-delay time T, the permanent light time TL, the on-delay pre-warning time T!, and the pre-warning time period T!L can be provided by the actual value of another alreadyprogrammed function:

Analog comparator (Ax – Ay) Analog threshold trigger (Ax)

Analog amplifier (Ax) Analog multiplexer (AQ)

Output Q is set to 1 with a 0 to 1 signal transition at Trg.

If output Q = 0, and input Trg is set hi at least for the duration of TL, the permanent lighting function is enabled, and output Q is set accordingly.

The off delay time T is triggered when the status at input Trg changes to 0 before the time TL has expired.

Output Q is reset when the Ta = T.

Before the off delay time (T - T!) has expired, you can output an off pre-warning that resets Q for the duration of the off prewarning time T!L.

A further signal at input Trg always resets T and output Q.

Caution

The time base for the T, T! and T!L must be identical.

If retentivity is not set, output Q and the expired time are reset after a power failure.

Analog ramp (AQ) Mathematic instruction (AQ)

PI controller (AQ) Up/down counter (Cnt)

Analog filter (AQ) Average value (AQ)

Max/Min (AQ) On-delay (Ta)

Off-delay (Ta) On-/off-delay (Ta)

Retentive on-delay (Ta) Wiping relay(pulse output) (Ta)

Edge triggered wiping relay (Ta)

Asynchronous pulse generator (Ta)

Stairway light switch (Ta) Multiple function switch (Ta)

Stopwatch (Ta)

The value of “TL”, ”T”can be set/modified in parameter mode. For information about how to modify, refer to chapter 5.2.2, please.

Weekly Timer

Description of function

The output is controlled by means of a configurable on/off date. The function supports any combination of weekdays.

Connection Description

At the No1, No2, No3 (cam) parameters you set the on and off

Parameter

triggers for each cam of the weekly timer. The parameter units are the days and the time-of-day.

Output Q

Q is set when the configured cam is actuated.

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Parameter

You can configure a time hysteresis for each individual cam in parameter mode. For information about how to modify, refer to chapter 4.2.2, please.

Timing diagram (three practical examples)

● M: Monday

● T: Tuesday

● W: Wednesday

● T: Thursday

● F: Friday

On-/Off-times

Any time between 00:00h and 23:59h is possible. You can also configure the on time to be a pulse signal. The timer block will be activated at the specified time for one cycle and then the output is reset.

- -:- - means: No on/off-times set.

Setting the weekly timer

To set the on-/off-times:

1. Move the cursor to one of the Cam parameters of the timer (e.g. No1).

2. Press OK. xLogic opens the Cam parameter assignment screen form. The cursor is positioned on the day of the week.

No1: Daily: 06:30 h to 08:00 h

No2: Tuesday: 03:10 h to 04:15 h

No3: Saturday and Sunday: 16:30 h to 23:10 h

Description of the function

Each weekly timer is equipped with three cams. You can configure a time hysteresis for each individual cam. For the cams, you set the on and off hysteresis. The weekly timer sets the output at a certain time, provided it is not already set.

The output is reset at a certain time, provided it is not already reset. A conflict is generated in the weekly timer when the set on time and the set off time at another cam are identical. In this case, cam 3 takes priority over cam 2, while cam 2 takes priority over cam 1.

The switching status of the weekly timer is determined by the status at the No1, No2 and No3 cams.

Days of the week

The prefix "D=" (Day) has the following meaning:

3. Press and to select one or several days of the week.

4. Press to move the cursor to the first position of the ontime.

5. Set the on-time.

Modify the value at the respective position, using the keys and . Move to the cursor to the various positions, using the keys and . At the first position, you can only select the

value - -:- - (- -:- - means: No on/off-times set).

6. Press to move the cursor to the first position of the offtime.

7. Set the off-time (in the same way as in step 5).

8. Confirm your entries with OK.

The cursor is now positioned on the No2 parameter (Cam2) and you can configure a further cam.

Special characteristics to note when configuring

The block properties window offers a tab for each one of the three cams. Here you can set the weekly on times for the cams. Each tab offers you, in addition, an option of defining the on and off times for each cam in hour and minute units. Hence, the shortest switching cycle is one minute.

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You can disable the on and off times individually, i.e. you can achieve switching cycles extending across more than one day, for example, by setting the on time for cam 1 to Monday 7:00h and the off time of cam 2 to Wednesday 13:07h, while disabling the on time for cam 2.

Backup of the real-time clock

The internal real-time clock of xLogic is buffered against power failure. The buffering time is influenced by the ambient temperature and is typically 100 hours at an ambient temperature of 25°C.

In order to set the weekly timer parameters via MODBUS, they can be assigned to an Analogue flag, AF, which would hold a value to represent the bits for each day of the week.

Weekday parameter.

For example, use AF1

AF has a 16-bit type value, the weekday uses the low 8-bits status as the parameters:

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

(Reserved)

SAT FRI THU WED TUE MON SUN

You can program as above, use one Bit to word block and then, you can set the F1--F7 at the touch screen to change the weekday settings.

On time/Off Time settings--Reference AF value.

For example,

 If AF2 =800, then the On time would be 08:00;

 If AF2=2105, then the On time would be 21:05;

 If AF3=1023, then the OFF time would be 10:23;

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NOTICE: If the AF value is over 2323, it will be not available for the On/Off time, the output of the weekly timer will be 0.

Yearly Timer

Description of function

The output is controlled by means of a configurable on/off date

Connection Description

At the No (cam) parameter you set the

Parameter

on and off trigger for the cam of the yearly timer.

Output Q

Q is set on when the configured cam is switched on.

Timing diagrams

Example 1: Yearly mode on, Monthly mode off, Pulse Off, On Time = 2000-06-01, Off Time = 2099-08-31: Every year on June 1 the timer output switches on and remains on until August 31.

Example 2: Yearly mode on, Monthly mode off, Pulse on, On Time = 2000-03-15, Off Time = 2099-**-**: Every year on March 15, the timer switches on for one cycle.

Parameter

The on and off trigger for the cam of the yearly timer can be set/modified in parameter mode and you can configure what you need. For information about how to modify, please refer to chapter 5.2.2.

Example 3: Yearly mode on, Monthly mode off, Pulse off, On Time = 2008-06-01, Off Time = 2010-08-31: On June 1 of 2008, 2009, and 2010 the timer output switches on and remains on until August 31.

Example 4: Yearly mode on, Monthly mode off, Pulse on, On Time = 2008-03-15, Off Time = 2010-**-**: On March 15 of 2008, 2009, and 2010, the timer output switches on for one cycle.

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Example 5: Yearly mode off, Monthly mode off, Pulse off, On Time = 2008-06-01, Off Time = 2008-08-31: On June 1, 2008, the timer output switches on and remains on until August 31, 2010.

Example 6: Yearly mode off, Monthly mode off, Pulse selected, On Time = 2008-03-15, Off Time = ****-**-**: On March 15, 2008, the timer output switches on for one cycle. Because the timer does not have a monthly or yearly action, the timer output pulses only one time at the specified On Time.

When you select the every month check box, the yearly clock switches on or off at a certain day of every month.

Backup of the real-time clock

The internal real-time clock of xLogic is buffered against power failure. The buffering time is influenced by the ambient temperature and is typically 100 hours at an ambient temperature of 25°C.

Special characteristics to note when configuring

A click on the dialogue box enables direct keyboard input of the month and day values. The values entered may not exceed the logical maximum of the relevant input boxes; otherwise xLogicsoft returns an error message.

The calendar icon offers you a Rievtech way of setting the date. It opens a window where you can set the days and months by clicking the relevant buttons.

Example 7: Yearly mode on, Monthly mode off, Pulse off, On Time = 2008-12-15, Off Time = 2010-01-07: On December 15 of 2008 and 2009, the timer output switches on and remains on until January 7 of the following year. When the timer output turns off on January 7, 2010, it does NOT turn on again the following December 15.

Example 8: Yearly mode on, Monthly mode on, On Time = 2008-**-01, Off Time = 2010-**-05: Starting in 2008, on the first day of each month the timer output switches on and switches off on the fifth day of the month. The timer continues in this pattern through the last month of 2010.

Sample configuration

The output of an xLogic is to be set annually on March 1, reset on April 4, set again on July 7, and reset again on November

19. You need to configure two yearly timers with corresponding on-times. Then logically link the outputs by means of an OR block.

Description of the function

The yearly timer sets and resets the output at specific on and off times. The off-date identifies the day on which the output is reset again. The first value defines the month, the second the day.

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Astronomical Clock

Result

Place two yearly timer switch SFBs on your programming interface and configure the blocks as specified.

Description of function

The astronomical clock SFB is used to set an output high between sunrise and sunset based on the local time at the geographical location of the xLogic device. The output status of this function block also depends on the configuration of Summertime/Winter time or Daylight Savings settings.

Connection Description

Parameter

The location info including longitude, latitude and time zone.

Q is set to Hi when the sunrise time is

Output Q

reached. It holds this state until sunset time is reached.

Create a logical link of the blocks via a standard OR block. The OR output is 1 if at least one of the yearly timer switches is set.

Parameters

In the astronomical clock dialogue, you can select the location of the xLogic device. You can select one of the following predefined time zone locations:

Beijing Berlin London Rome Moscow Tokyo

Washington Ankara Madrid Amsterdam

If you select one of these locations, xLogicsoft uses the latitude, longitude, and time zone of your selection.

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Alternatively, you can configure a specific latitude, longitude, and time zone for your location, and provide a name for this custom location.

Based on the location and time zone, xLogic calculates the absolute sunrise and sunset time for the current day. The block also takes Summertime/Winter Daylight Savings time into consideration, if it is configured on the computer where xLogicsoft is installed. To do such configuration, you should select the checkbox of "Automatically adjust clock for daylight for saving changes" in the "Date and Time Properties" dialogue.

You can also set this up in the PLC using the Transfer…..Summer Time/Winter Time menu option:

Connection Description

En (Enable) is the monitoring input. xLogic sets the current elapsed time

Input En ( )

Input Lap

Input R ( )

Parameter

Output AQ

to 0 and begins counting elapsed time when En transitions from 0 to 1. When En transitions from 1 to 0, the elapsed time is frozen.

A positive edge (0 to 1 transition) at input Lap pauses the stopwatch and sets the output to lap time.

A negative edge (1 to 0 transition) at input Lap resumes the stopwatch and set the output to current elapsed time.

A signal at input R (Reset) clears the current elapsed time and lap time.

The time base for the elapsed time can be set to hours, minutes, seconds, or 1/100ths of seconds.

The output AQ outputs value of the current elapsed time when it is a negative edge (1 to 0 transition) at the input Lap, and outputs value of the Lap time when it is a positive edge (0 to 1 transition) at the input Lap.

A positive edge (0 to 1 transition) resets the value at output AQ to 0.

Timing diagram

Description of function

The function calculates the value at the input and sets or resets Q depending on the sunrise time and sunset time at the configured location and time zone of the module.

Stopwatch

Description of function

Parameters Time Base

You can configure the time base for the analogue output:

The stopwatch records the time elapsed since it was enabled.

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The time base for the elapsed time can be in hours, minutes, seconds, or 1/100ths of seconds (units of 10 milliseconds). The smallest time base, and therefore the resolution, is 10 milliseconds, or 1/100ths of a second.

Timing diagram

Description of the function

When En = 1, the current time increases.

Connection Description

You reset the output and the internal

Input R ( )

counter value to zero with a signal at input R (Reset).

This function counts the 0 to 1

Input Cnt ( )

transition at input Cnt. It does not count 1 to 0 transitions.

Input Dir (Direction) determines the direction of count:

Input Dir

Dir = 0: Up Dir = 1: Down

On: On threshold Value range: 0...99999999 Off: Off threshold

Parameter

Value range: 0...99999999 Start Val: Initial value from which to

begin counting either down or up. Retentivity set (on) = the status is

retentive in memory. Q is set and reset according to the

Output Q

actual value at Cnt and the set thresholds.

When En = 0, the current time counting pauses.

When En = 1 and Lap = 0, the output AQ outputs the value of the current elapsed time.

When En = 1 and Lap = 1, the current time continue increasing, but the output AQ outputs the value of the Lap time.

When En = 0 and Lap =1, the output AQ outputs the value of the Lap time.

When En = 0 and Lap = 0, the output AQ outputs the value of the latest current time.

When R = 1, both the current time and the Lap time are reset.

Up/Down Counter

Description of function

Parameter

The on threshold On and the off threshold Off can be provided by the value of another already-programmed function:

Analog comparator (Ax – Ay) Analog threshold trigger (Ax)

An input pulse increments or decrements an internal value, depending on the parameter setting. The output is set or reset when a configured threshold is reached. The direction of count can be changed with a signal at input Dir

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Analog amplifier (Ax) Analog multiplexer (AQ)

Analog ramp (AQ) Mathematic instruction (AQ)

PI controller (AQ) Up/down counter (Cnt)

Analog filter (AQ) Average value (AQ)

Max/Min (AQ) On-delay (Ta)

Off-delay (Ta) On-/off-delay (Ta)

Retentive on-delay (Ta) Wiping relay(pulse output) (Ta)

Edge triggered wiping relay (Ta)

Asynchronous pulse generator (Ta)

Stairway light switch (Ta) Multiple function switch (Ta)

Stopwatch (Ta)

The value of “On”, ”Off” and “Cnt” can be set/modified in parameter mode.

Timing diagram

Thus, if the pulses at the fast inputs are faster than the scan cycle time, the SFB might not switch until the specified limit has been exceeded.

Example: Up to 100 pulses per cycle can be counted; 900 pulses have been counted so far. On = 950; Off = 10000. The output is set in the next cycle after the value has reached

1000.

The output would not be set at all if the value Off = 980

Hours Counter

Description of function

A configured time is triggered by a signal at the monitoring input. The output is set when this time has expired.

Connection Description

Description of the function

The function increments (Dir = 0) or decrements (Dir = 1) the internal counter by one count with every positive edge at input Cnt.

You can reset the internal counter value to '000000', with a signal at the reset input R. As long as R=1, the output is 0 and the pulses at input Cnt are not counted.

Output Q is set and reset according to the actual value at Cnt and the set thresholds. See the following rules for calculation.

Calculation rule

If the on threshold >= off threshold, then: Q = 1, if Cnt >= On Q = 0, if Cnt < Off.

If the on threshold < off threshold, then: Q = 1, if On <= Cnt < Off.

Caution

The function polls the limit value of the counter once in each cycle.

A positive edge (0 to 1 transition) at

Input R ( )

input R resets output Q and sets a configured value MI at the counter for the duration of the time-to-go (MN).

Input En ( )

En is the monitoring input. xLogic scans the on-time of this input.

A positive edge at input Ral (Reset all) resets the hours counter (OT) and the output, and sets the time-to-go value (MN) to the maintenance interval MI:

Input Ral ( )

• Output Q = 0

• Measured operating time OT = 0

• Time-to-go of the maintenance interval MN = MI.

MI: Maintenance interval to be preset in units of hours and minutes

Range of values: 0000 h to 9999 h, 0 m to 59 m

OT: the accumulated total operating time (you can specify an offset in hours and minute)

Parameter

Range of values: 00000 h to 99999 h, 0 m to 59 m

Q → 0:

• When "R" is selected: Q = 1, if MN = 0; Q = 0, if R = 1 or Ral = 1

• When "R+En" is selected:

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Q = 1, if MN = 0;

Output Q

Analog comparator (Ax – Ay) Analog threshold trigger (Ax)

Q = 0, if R = 1 or Ral = 1 or En = 0. The output is set when the time-to-go

MN = 0. The output is reset:

• When "Q→0:R+En", if R = 1 or Ral = 1 or En = 0

• When "Q→0:R", if R = 1 or Ral = 1.

Analog amplifier (Ax) Analog multiplexer (AQ)

Analog ramp (AQ) Mathematic instruction (AQ)

PI controller (AQ) Up/down counter (Cnt)

Analog filter (AQ) Average value (AQ)

Max/Min (AQ) On-delay (Ta)

Timing diagram

MI = Configured time interval

MN = Time-to-go

OT = Total time expired since the last 1 signal at the Ral input

These values are principally held retentive!

Off-delay (Ta) On-/off-delay (Ta)

Retentive on-delay (Ta) Wiping relay(pulse output) (Ta)

Edge triggered wiping relay (Ta)

Asynchronous pulse generator (Ta)

Stairway light switch (Ta) Multiple function switch (Ta)

Stopwatch (Ta)

The value of “MI” can be set and modified in parameter mode.

Description of the function

The hour’s counter monitors input En. As long as the status of this input is 1, xLogic calculates the time expired and the timeto-go MN. xLogic displays these times when it is set to configuration mode. The output is set to 1 when the time-togo is equal to zero.

You reset output Q and the time-to-go counter to the specified value, MI with a signal at input R. The operation hour counter, OT remains unaffected.

You reset output Q and the time-to-go counter to the specified value MI with a signal at input Ral. The operation hour counter, OT is reset to 0.

Depending on your configuration of the Q parameter, the output is either reset with a reset signal at input R or Ral or when the reset signal is 1 or the En signal is 0.

The limit value of OT

The values of the operating hours in OT are retained when you reset the hours counter with a signal at input R. The hours counter OT continues the count as long as En = 1, irrespective of the status at the reset input R. The counter limit of OT is

Parameter

The maintenance interval MI can be provided by the actual value of another already-programmed function:

99999 h. The hour’s counter stops when it reaches this value.

Parameter Pre-set

In xLogicsoft, you can define MI and an OT start value.

You can set whether or not the behaviour of Q does or does not depend on En by selecting the corresponding checkbox.

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Retentivity with the hour’s counter

The hours counter in the xLogic is generally retentive.

However, if the values of the hour’s counter are lost after a power failure, then select the respective block in your circuit program. Right mouse click on the hours counter and select Block Properties > Parameters. The option Retentivity must be activated and not changeable (greyed out).

If the Retentivity option is not available, then delete the block and insert a new special function hours counter at the same position.

Threshold Trigger

Description of function

Parameter

The gate time G_T can be provided by the actual value of another already-programmed function:

The output is switched on and off, depending on two configurable frequencies.

Connection Description

The function counts 0 to 1 transitions at input Fre.1 to 0 transitions are not counted.

Use Inputs I5, I6 (14kHz) I7, I8 (60kHz)

Input Fre ( )

for ELC-12 CPU, Inputs I9, IA (14kHz) IB, IC (60kHz) for PR-18, ELC-22 and PR-24 CPU

Any other input or circuit element can be used for low frequencies (typical 4 Hz).

On: On threshold The range of values: 0000...9999 Off: Off threshold

Parameter

The range of values: 0000...9999 G_T: Time interval or gate time during

which the input pulses are measured. The range of values: 00:05 s...99:99 s

Output Q

Q is set or reset according to the threshold values.

Analog comparator (Ax – Ay) Analog threshold trigger (Ax)

Analog amplifier (Ax) Analog multiplexer (AQ)

Analog ramp (AQ) Mathematic instruction (AQ)

PI controller (AQ) Up/down counter (Cnt)

Analog filter (AQ) Average value (AQ)

Max/Min (AQ) On-delay (Ta)

Off-delay (Ta) On-/off-delay (Ta)

Retentive on-delay (Ta) Wiping relay(pulse output) (Ta)

Edge triggered wiping relay (Ta)

Asynchronous pulse generator (Ta)

Stairway light switch (Ta) Multiple function switch (Ta)

Stopwatch (Ta)

The value of “On”, ”Off” can be set/modified in parameter mode.

Timing diagram

Programmable Relay ● User Manual for ELC and PR Series 68 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

fa = Input frequency

Description of the function

The trigger measures the signals at input Fre. The pulses are captured during a configurable period G_T.

Q is set or reset according to the set thresholds. See the following calculation rule.

Calculation rule

If the threshold (On) > threshold (Off), then: Q = 1, if fa >= On Q = 0, if fa < Off.

If the threshold (On) < threshold (Off), then Q = 1, if On <= fa < Off.

Analogue Comparator

Description of function

The output is set and reset depending on the difference Ax Ay and on two configurable thresholds.

Connection Description

Input the analogue signals of which you want to determine the delta at the inputs Ax and Ay.

Input Ax, Ay

Use the analogue inputs AI1...AI8, the analogue outputs AQ1 and AQ2.

AI1...AI8: 0 - 10 V corresponds with 0

- 1000 (internal value). A: Gain

Range of values: ± 10.00 B: Zero offset The range of values: ± 10,000

Parameter

On: On threshold The range of values: ± 20,000 Off: Off threshold The range of values: ± 20,000 p: Number of decimals

Output Q

Range of values: 0, 1, 2, 3 Q is set or reset depending on the set

thresholds.

Parameter p (number of decimals)

The on threshold On and the off threshold Off can be provided by the actual value of another already-programmed function:

Analog comparator (Ax – Ay) Analog threshold trigger (Ax)

Analog amplifier (Ax) Analog multiplexer (AQ)

Analog ramp (AQ) Mathematic instruction (AQ)

PI controller (AQ) Up/down counter (Cnt)

Analog filter (AQ) Average value (AQ)

Max/Min (AQ) On-delay (Ta)

Off-delay (Ta) On-/off-delay (Ta)

Retentive on-delay (Ta) Wiping relay(pulse output) (Ta)

Edge triggered wiping relay (Ta)

Asynchronous pulse generator (Ta)

Stairway light switch (Ta) Multiple function switch (Ta)

Stopwatch (Ta)

Applies only to Ax, Ay, Delta, On and Off values displayed in a message text.

Does not apply to the comparison of on and off values! (The compare function ignores the decimal point.)

Programmable Relay ● User Manual for ELC and PR Series 69 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

See also topic "Calculating the gain and offset of analog

The value of “On”, ”Off” and ”Dec” can be set/modified in parameter mode.

Timing diagram

Q for Ax - Ay > 200, On = Off = 200

Description of function

The function reads the value of the signal at the analogue input Ax.

This value is multiplied by the value of parameter A (gain). Parameter B (offset) is added to the product, hence

(Ax ∙ gain) + offset = Actual value Ax.

trigger length Trg (= output of the analogue comparator) exceeds the defined on delay time.

This way you can set a virtual hysteresis, which renders the input less sensitive to short changes.

Particular characteristics to be noted when configuring

For help on analogue block parameters, refer to the Analogue

value processing section in xLogicsoft.

Setting the Par parameter

The gain and offset parameters are used to adapt the sensors to the relevant application.

Example

In a heating control system, the supply Tv and return line temperatures Tr are to be compared, for example with a sensor at AI2.

A control signal is to be triggered (for example "heater On") when the difference between the supply and return line temperatures is greater than 15 °C. The control signal is reset when the difference is less than 5 °C.

The process variable of the temperature is to be shown in parameter assignment mode.

(Ay ∙ gain) + offset = Actual value Ay.

Output Q is set or reset depending on the difference of the actual values Ax - Ay and the set thresholds. See the following calculation rule.

Calculation rule

If threshold On ≥Threshold Off, then:

Q = 1, if (actual value Ax - actual value Ay) > On

Q = 0, if (actual value Ax - actual value Ay) ≤Off.

If threshold On < Threshold Off, then Q = 1, falls:

On ≤ (actual value Ax - actual value Ay) < Off.

Reducing the input sensitivity of the analogue comparator

You can delay the output of the analogue comparator selectively by means of the "on delay" and "off delay" SFBs. By doing so, you determine that output Q is only set if the input

The thermocouples available have the following technical data:

-30 to +70 °C, 0 to 10 VDC.

Application

-30 °C to 70 °C = 0 VDC to 10 VDC

0 °C Range of values:

-30 °C to 70 °C = 100 On threshold = 15 °C Threshold = 15

Off threshold = 5 °C Threshold = 5

Internal mapping

0 to 1000 300

→ Offset = -30 1000 → Gain = 100/1000 = 0.1

values

Reducing the input response of the analogue comparator

You can selectively delay the output of an analogue comparator by means of the "On-delay" and "Off-delay" special functions. With on-delay, output Q is only set if the pulse width of the triggering signal at input Trg (=analogue comparator output) is longer than the on-delay time.

Programmable Relay ● User Manual for ELC and PR Series 70 2018 v4.5 ● © Rievtech Co., Ltd. ● www.rievtech.com

Using this method, you will obtain a virtual hysteresis and reduce the input response to short signals.

Function block diagram

Analogue Threshold Trigger

Description of function

The output is set or reset depending on two configurable thresholds (hysteresis).

Connection Description

Input the analogue signal to be evaluated at input Ax.

Input Ax

Use the analogue inputs AI1...AI8, the analogue outputs AQ1 and AQ2.

0 - 10 V is proportional to 0 - 1000 (internal value).

A: Gain Range of values: ± 10.00 B: Zero offset The range of values: ± 10,000

Parameter

On: On threshold The range of values: ±20,000 Off: Off threshold The range of values: ± 20,000 p: Number of decimals Range of values: 0, 1, 2, 3

Output Q

Q is set or reset depending on the set thresholds.

Parameter On and Off

The On and Off parameters can be provided by the actual value of another already-programmed function:

Analog comparator (Ax – Ay) Analog threshold trigger (Ax)

Analog amplifier (Ax) Analog multiplexer (AQ)

Analog ramp (AQ) Mathematic instruction (AQ)

PI controller (AQ) Up/down counter (Cnt)

Analog filter (AQ) Average value (AQ)

Max/Min (AQ) On-delay (Ta)

Off-delay (Ta) On-/off-delay (Ta)

Retentive on-delay (Ta) Wiping relay(pulse output) (Ta)

Edge triggered wiping relay (Ta)

Asynchronous pulse generator (Ta)

Stairway light switch (Ta) Multiple function switch (Ta)

Stopwatch (Ta)

Applies only to the display of On, Off and Ax values in a message text.

Does not apply to the comparison of On and Off values! (The compare function ignores the decimal point.)

The value of “On”, “Off” and “Dec” can be set/modified in parameter mode.

Timing diagram

Description of function

The function reads the value of the signal at the analogue input Ax.

This value is multiplied by the value of parameter A (gain). Parameter B (offset) is added to the product, hence

(Ax ∙Gain) + Offset = Actual value Ax.

Output Q is set or reset depending on the set threshold values. See the following calculation rule.

Calculation rule

If threshold (On) ≥ threshold (Off), then: Q = 1, if the actual value Ax > On Q = 0, if the actual value Ax ≤Off.

Analogue Amplifier

Description of function

This SFB amplifies an analogue input value and returns it at the analogue output.

Connection Description

Input Ax

Parameter

Output AQ

Input the analogue signal to be amplified at input Ax.

Use the analogue inputs AI1...AI8, the analogue outputs AQ1 and AQ2.

AI1...AI8: 0 - 10 V corresponds with 0

- 1000 (internal value). A: Gain

Range of values: ± 10.00 B: Zero offset The range of values: ± 10,000 p: Number of decimals Range of values: 0, 1, 2, 3

Analog output Value range for AQ: -32768...+32767

If threshold (On) < threshold (Off), then Q = 1, if On ≤ the actual value Ax < Off.

NOTICE: The decimal point setting must be identical in the min. and max. range.

View in parameter assignment mode (example):

Parameter p (number of decimals)

Applies only to the display of Ax and Ay values in a message text.

Does not apply to the comparison of On and Off values! (The compare function ignores the decimal point.)

Description of function

The function reads the value of an analogue signal at the analogue input Ax.

This value is multiplied by the gain parameter A. Parameter B (offset) is added to the product, i.e.

(Ax ∙gain) + offset = Actual value Ax.

Analogue Watchdog

Description of function

This special function saves the process variable of an analogue input to memory and sets the output when the output variable exceeds or drops below this stored value plus a configurable offset.

Connection Description

A positive edge (0 to 1 transition) at input En saves the analogue value at

Input En ( )

input Ax ("Aen") to memory and starts monitoring of the analogue range Aen ± Delta.

You apply the analogue signal to be monitored at input Ax.

Input Ax

Use the analogue inputs AI1...AI8, the analogue outputs AQ1 and AQ2.

0 - 10 V is proportional to 0 - 1000 (internal value).

A: Gain Range of values: ± 10.00 B: Zero offset The range of values: ± 10,000 Delta: Difference value for the Aen

on/off threshold The range of values: ± 20,000

Parameter

Δ1: difference value above Aen: on/off threshold Range of values: 0 to 20,000 Δ2: difference value below Aen: on/off threshold Range of values: 0 to 20,000 p: Number of decimals

Output Q

Range of values: 0, 1, 2, 3 Q is set/reset, depending on the

stored analogue value and the offset.

Parameter p (number of decimals)

The two threshold parameters Threshold 1 and Threshold 2 can be provided by the actual value of another alreadyprogrammed function:

Analog comparator (Ax – Ay) Analog threshold trigger (Ax)

Analog amplifier (Ax) Analog multiplexer (AQ)

Analog ramp (AQ) Mathematic instruction (AQ)

PI controller (AQ) Up/down counter (Cnt)

Analog filter (AQ) Average value (AQ)

Max/Min (AQ) On-delay (Ta)

Off-delay (Ta) On-/off-delay (Ta)

Retentive on-delay (Ta) Wiping relay(pulse output) (Ta)

Edge triggered wiping relay (Ta)

Asynchronous pulse generator (Ta)

Stairway light switch (Ta) Multiple function switch (Ta)

Stopwatch (Ta)

Applies only to the display of Aen, Ax and Delta values in a message text.

B: Zero offset

Timing diagram

Description of function

A 0 to 1 transition at input En saves the value of the signal at the analogue input Ax. This saved process variable is referred to as “Aen”.

Both the analogue actual values Ax and Aen are multiplied by the value of parameter A (gain), and parameter B (offset) is then added to the product, i.e.

The range of values: ± 10,000 On: On threshold The range of values: ±20,000 Delta: Differential value for calculating

the off parameter The range of values: ± 20,000 p: Number of decimals Range of values: 0, 1, 2, 3

Output Q

Q is set or reset, depending on the threshold and difference values.

(Ax ∙ gain) + offset = Actual value Aen, when input En changes from 0 to 1, or

(Ax ∙ gain) + offset = Actual value Ax.

Output Q is set when the signal at input En = 1 and if the actual value of input Ax is out of range of Aen ± Delta.

Output Q is reset, when the actual value of input Ax lies within the range of Aen +- Delta, or when the signal at input En changes to lo.

Analogue Differential Trigger

Description of function

The output is set and reset depending on a configurable threshold and a differential value.

Connection Description

Parameter p (number of decimals)

Applies only to the display of On, Off and Ax values in a message text.

Does not apply to the comparison of On and Off values! (The compare function ignores the decimal point.)

Timing diagram A: Function with a negative difference Delta

You apply the analogue signal to be analysed at input Ax.

Input Ax

Use the analogue inputs AI1...AI8, the analogue outputs AQ1 and AQ2.

0 - 10 V is proportional to 0 - 1000 (internal value).

Parameter

A: Gain Range of values: ± 10.00

Timing diagram B: Function with positive difference Delta

Description of the function

The function fetches the analogue signal at input Ax.

Ax is multiplied by the value of the A (gain) parameter, and parameter B (offset) is added to the product, i.e.

(Ax ∙ gain) + offset = actual value of Ax.

Output Q is set or reset, depending on the set (On) threshold and difference value (Delta). The function automatically calculates the Off parameter: Off = On + Delta, whereby Delta may be positive or negative. See the calculation rule below.

Calculation rule

When you set a negative differential value Delta and the On threshold >= Off threshold, then:

Connection Description

1 on input En (Enable) switches, dependent on S1 and S2, a

Input En ( )

Input S1 and S2

Parameter

Output AQ

parameterized analogue value to the output AQ.

0 on input EN switches 0 to the output AQ.

S1 and S2 (selectors) for selecting the analogue value to be issued.

S1 = 0 and S2 = 0: The value 1 is issued

S1 = 0 and S2 = 1: The value 2 is issued

S1 = 1 and S2 = 0: The value 3 is issued

S1 = 1 and S2 = 1: The value 4 is issued

V1...V4: Analog values (Value) that will be issued.

Value range: -32768...+32767 p: Number of decimal places value range: 0, 1, 2, 3

Analog output Value range for AQ: -32768...+32767

Q = 1, if the actual value Ax > On

Q = 0, if the actual value Ax ≤ Off.

See the timing diagram A.

When you set a positive differential value Delta and the On threshold < the Off threshold, then

Q = 1, if:

On threshold, ≤ the actual value Ax < Off threshold.

See the timing diagram B.

Analogue Multiplexer

Description of function

This special function displays 0 or one of 4 saved analogue values on the analogue output.

Parameters V1…V4

The values for V1…V4 can be provided by the value of another already-programmed function such as:

Analog comparator (Ax – Ay) Analog threshold trigger (Ax)

Analog amplifier (Ax) Analog multiplexer (AQ)

Analog ramp (AQ) Mathematic instruction (AQ)

PI controller (AQ) Up/down counter (Cnt)

Analog filter (AQ) Average value (AQ)

Max/Min (AQ) On-delay (Ta)

Off-delay (Ta) On-/off-delay (Ta)

Retentive on-delay (Ta) Wiping relay(pulse output) (Ta)

Edge triggered wiping relay (Ta)

Asynchronous pulse generator (Ta)

Stairway light switch (Ta) Multiple function switch (Ta)

Stopwatch (Ta)

Timing Diagram

Description of Function

If input En is set, then the function issues one of 4 possible analogue values V1 to V4 at the output AQ, depending on the parameters S1 and S2.

If the input En is not set, then the function issues the analogue value 0 at output AQ.

PI Controller

Description of function

It is for proportional-action and integral-action controllers. You can use both types of controller individually or combined.

Connection Description Input A/M Set the mode of the controller:

1: automatic mode 0: manual mode

Use the input R to reset the output AQ.

Input R ( )

Input PV

Parameter

As long as this input is set, the input A/M is disabled. The output AQ is set to 0.

Analogue value: process value, Influences the Output

Sensor: Type of sensor being used Min.: Minimum value for PV value range: -10,000 to +20,000 Max.: Maximum value for PV value range: -10,000 to +20,000 A: Gain Value range: +- 10.00 B: Offset Value range: +- 10,000 SP: Set-value assignment value range: -10,000 to +20,000 Mq: Value from AQ with manual

mode. Value range: 0 to 1,000 Parameter sets: application-related

pre-sets for KC, TI and Dir (see below) KC: Gain value range: 00.00 to 99.99 TI: Integral time

value range 00:01 min to 99:59 min

Analogue output

If you interconnect this special function with a real analogue output, note that the analogue output can only process values between 0 and 1000. To do this, you may need to connect an additional analogue amplifier block between the analogue output of the special function and the real analogue output. Using this amplifier, you standardize the output range of the special function to a value range of 0 to 1000.

Output AQ

Dir: Action direction of the controller value range: + or -

p: Number of decimal places value range: 0, 1, 2, 3

Analog output (manipulated variable) Value range for AQ: 0 to 1,000

A disturbance causes the PV to drop, as Dir is

As AQ is set to 0 by means of the input R, PV

positioned upwards, AQ increases until PV corresponds again to SP.

positioned downwards, AQ decreases until PV corresponds again to SP. Dir is coordinated with the basic conduct of a control loop. The direction (dir.) cannot be changed during the term of the function. The change in Dir here is shown for the purposes of clarification.

changes. This is based on the fact that PV increases, which on account of Dir = upwards causes AQ to drop.

Description of Function

If the input A/M is set to 0, then the special function issues output AQ with the value that you set with parameter Mq.

Parameter P (number of decimal places)

Only applies to portray the values from PV, SP, Min. and Max. in a message text.

Timing Diagram

Nature, manner and speed with which the AQ changes depend on the parameters KC and TI. Thus, the course of AQ in the diagram is merely an example. A control action is continuous; therefore, the diagram portrays just an extract.

If the input A/M is set to 1, then automatic mode commences. As an integral sum the value Mq is adopted, the controller function begins the calculations in accordance with the formulas given in Control and regulated basics. The updated value PV is calculated in the formulas.

Updated value PV = (PV * gain) + offset

If the updated value PV = SP, then the special function does not change the value of AQ.

Dir = upwards/+ (timing diagram numbers 1 and 3)

If the updated value PV > SP, then the special function reduces the value of AQ.

If the updated value PV < SP, then the special function increases the value of AQ.

Dir = downwards/- (timing diagram number 2)

If the updated value PV > SP, then the special function increases the value of AQ.

If the updated value PV < SP, then the special function reduces the value of AQ.

With a disturbance, AQ continues to increase/decrease until the updated value PV again corresponds to SP. The speed with which AQ changes depends on the parameters KC and TI. If the input PV exceeds the parameter Max., then the updated value PV is set to the value of Max. If the PV falls short of the parameter Min., then the updated value PV is set to the

value of Min.

Parameter

Temperature

If the input R is set to 1, then the AQ output is reset. As long as R is set, the input A/M is disabled.

Sampling Time

The sampling time is fixed at 500 ms.

Parameter sets

In order to simplify the use of the PI controller, the parameters for KC, TI and Dir are predefined for the following applications:

Parameter set Application example

Temperature, cooling

fast

slow

Pressure 1

Pressure 2

Full level 1

Full level 2

control of small spaces; small volumes Heating, ventilation, temperature, cooling control of large spaces; large volumes Quick pressure change, compressor control Slow pressure change, differential pressure control (flow controller) Vat and/or reservoir filling without drain Vat and/or reservoir filling with drain

0,5 30 +

1,0 120 +

3,0 5 +

1,2 12 +

1,0 1 +

0,7 20 +

TI (s)

Dir

Control and regulated

In engineering, quantities can be both controlled and regulated.

When controlling, a quantity is manipulated without being able to compensate for outside influences. When regulating, a quantity is maintained at a specific value in order to compensate for outside influences.

Basic concepts of regulating

In the example, the current for the electric heating is the manipulated variable. The changeable resistance is the actuator. The hand that operates the actuator is the control. The actual room temperature is the controlled variable or the process value. The desired room temperature is the command variable or the setpoint value. The electric heating is the control process. The thermometer is the sensor. The temperature loss from opening the window is the disturbance variable.

So, this means that the person measures the process value (room temperature) with the sensor (thermometer), compares the process value (room temperature) with the command variable (desired room temperature) and uses the actuator (changeable resistance) to manually regulate the manipulated variable (heating current), in order to compensate for the disturbance variable (temperature drop from opening the window). The person is, therefore, the controller.

In the following example, controlling means that the person can set the heat output at a fixed value. The heater cannot compensate for the drop in room temperature when a window is opened.

In the example below, regulating means that the person can increase the heat output if the room temperature drops to below 20 °C. If the room temperature rises above 20 °C, the heat output is reduced.

The control device is formed from the actuator and the control.

The control and controller together form the regulating device.

The following picture gives an abstract portrayal of the situation described above.

The comparing element uses the sensor to compare the command variable with the process value. If the command variables and process value deviate from one another, this results in a positive or negative loop error that in turn changes the process value.

Control loop

The process value x influences the manipulated variable M by means of the regulating device. This creates a closed circuit that is also known as a control loop.

If in the example above, the window is opened, the temperature in the room drops. The person must increase the heat output of the heater. If the heat output is increased too much, it will get too hot. The person must then reduce the heat output.

disturbance, a loop error arises. The loop error is corrected by means of the manipulated variable M.

Controller basics

A controller can be simply portrayed as follows:

The comparing element and the controller function describe the conduct of the controller.

The following describes the most important types of controller. A controller's step response tells us a lot about its conduct. The step response describes how a controller reacts to the erratic change in the process value.

There are 3 important basic types of controller:

Proportional-action controller (P controller)

Integral-action controller (I controller)

Differential-action controller (D controller – we're not touching on this here)

If the heat output is increased or reduced too quickly, then the control loop starts to sway. The room temperature fluctuates. It is either too hot or too cold. To prevent this, the person must carefully and slowly reduce or increase the heat output.

Loop error

The loop error is the difference between the command variable and the process value. In other words: the deviation of a process value from a set value.

e = SP – PV

The loop error ‘e’ brings about a change to the manipulated variable M.

The example above illustrates this very well: if the desired temperature is 20 °C (= command value w), the room temperature is 22 °C (= process value PV), this results in the loop error:

e = SP – PV = 20 °C - 22 °C = -2 °C

In this case, the negative sign indicates a reversing action: the heat output is reduced.

These are combined for a real controller. For instance, the PI controller:

P Controller

A proportional-action controller (P controller) changes the manipulated variable M proportional to the loop error. The P controller works immediately. By itself, it cannot drive the loop error to zero.

: Manipulated variable of the P controller at the time n

: Gain of the P controller

: Loop error at the time n

In a control loop's state of equilibrium, the loop error is zero or very small. If the command variable changes or there is a

The following picture shows a jump in process value and step response of the controller:

Summary

The P controller has the following characteristics:

It cannot correct faults with the control process > lasting loop error.

It reacts immediately to a change in the process value.

It is stable.

I Controller

An integral-action controller (I controller) changes the manipulated variable M proportional to the loop error and to the time. The I controller works by delayed action. It completely remedies a loop error.

In order to calculate the value of the manipulated variable at a period of time n, the time up until this period of time must be divided into small time slices. The loop errors at the end of each time slice must be added up (integrated) and they are then entered in the calculation.

The following picture shows a jump in process value and step response of the controller:

Summary

The PI controller has the following characteristics:

It sets the process value exactly to the command variable.

By so doing, it tends to oscillate and is unstable.

It requires more time to carry out the control action than the P controller.

PI controller

A PI controller reduces the loop error immediately and will eventually drive the loop error to zero.

: Manipulated variable at the time n

: Proportional part of the manipulated

variable

: Manipulated variable of the I controller at the time n

: Manipulated variable of the I controller at the time n-1;

also called the integral sum

: Gain of the I controller

: Sampling time, duration of a time slice

: Integral time: by means of this time, the influence of the integral part is controlled by the manipulated variable, also known as integral-action time

: Loop error at the time n

: Loop error at the time n-1; etc.

: Loop error at the beginning of the calculations

: Integral part of the manipulated variable

: Manipulated variable of the I controller at

the time n-1; also called the integral sum

: Gain of the P controller

: Gain of the I controller

: Sampling time, duration of a time slice

: Integral time; by means of this time the influence of the integral part is controlled by the manipulated variable, also known as the integralaction time

: Loop error at the time n

The following picture shows a jump in process value and step response of the controller:

Summary

The PI controller has the following characteristics:

The P controller components quickly intercept an occurring loop error.

The I controller components can then remedy the remaining loop error.

The controller components supplement each other so that the PI controller works quickly and precisely.

Description of the individual parameters

Controller parameters Portrayed in xLogic

Mn Manipulated variable at the time n kP The gain of the P part

kI The gain of the I part

Ts Sampling time, duration of a time slice TI Integral time Parameter TI, if you set this

en Loop error at the time n; generally, applies: e = SP – PV SP The parameter SP is the set-

PV PV is the process value x and

The gain parameter

The output of the PI controller block In the xLogic, the parameter KC applies as an increase for the I part and the P part of the controller equally. Should you enter KC=0, then the P part of the controller switches off. In this special case, k is automatically set to 1 for the I part. If KC = 0: kP = 0 and kI = 1 If KC <> 0: kP = kI = KC Fixed 500 ms

parameter to 99:59 min, then you switch off the I part of the controller. Refer to SP and PV "

value assignment w. For this parameter, you can use the analogue output of a different special function.

is calculated as follows: PV = (analog value on input * gain) + offset. You can connect the input for example by means of an analogue input with a PT100 sensor.

influences PV

Possible

value range

in the xLogic

0 to 1,000

0.00 to

99.99

00:01 min to

99.59 min

-10,000 to +20,000

0.0 to

10.0

The offset parameter

PV is restricted by the

The Dir parameter gives the

influences PV

parameters Min. and Max.

action direction of the controller. Positive means: If the set value > process value then the process value is increased; if the set value < process value then the process value is reduced. Negative means: If the set value > process value then the process value is reduced; if the set value < process value then the process value is increased. e.g. heat regulation: if the set value is greater than the process value (room is too cold), the manipulated variable increases the process value.

Analogue Ramp

Description of function

The Analogue Ramp instruction allows the output to be changed from the current level to a selected level at a specified rate.

Connection Description

A change in the status from 0 to 1 at input EN (Enable) applies the start/stop level (Offset "B" + StSp) to the output for 100 ms and starts the ramp

Input En ( )

operation to the selected level. A change in the status from 1 to 0

immediately sets the current level to Offset "B", which makes output AQ equal to 0.

SeI = 0: The step 1 (level 1) is selected.

SeI = 1: The step 2 (level 2) is

Input Sel

selected. A change in the status of Sel causes

the current level to start changing to the selected level at the specified rate.

A change in the status from 0 to 1 at

Input St

input St (Decelerated Stop) causes the current level to decrease at a constant rate until the start/stop level

-10,000 to +20,000 In each case: 10,000 to +20,000

- or +

(Offset "B" + StSp) is reached. The

Parameter

Output AQ

start/stop level is maintained for 100 ms and then the current level is set to Offset "B", which makes output AQ equal to 0.

Level1 and Level2: Levels to be reached; value range for each level: 10,000 to +20,000

MaxL: a Maximum value that must not be exceeded.

Value range: -10,000 to +20,000 StSp: Start/Stop offset: value that is

added to Offset "B" to create the start/stop level. If the Start/Stop offset is 0, then the start/stop level is Offset "B").

Value range: 0 to +20,000 Rate: Speed with which level 1, level 2

or 0ffset is reached. Steps/seconds are issued.

Value range: 1 to 10,000 A: Gain Value range: 0 to 10,00 B: Offset Value range: +- 10.000 p: Number of decimal places Value range: 0, 1, 2, 3

The output AQ is scaled using the formula:

(Current Level - Offset "B") / Gain "A" Note: When AQ is displayed in

parameter mode or message mode, it is displayed as an un-scaled value (engineering units: current level).

The value range for AQ: 0...+32767

Parameter p (number of decimal places)

The level parameters Level1 and Level2 can be provided by the value of another already-programmed function:

Analog comparator (Ax – Ay) Analog threshold trigger (Ax)

Analog amplifier (Ax) Analog multiplexer (AQ)

Analog ramp (AQ) Mathematic instruction (AQ)

PI controller (AQ) Up/down counter (Cnt)

Analog filter (AQ) Average value (AQ)

Max/Min (AQ) On-delay (Ta)

Off-delay (Ta) On-/off-delay (Ta)

Retentive on-delay (Ta) Wiping relay(pulse output) (Ta)

Edge triggered wiping relay (Ta)

Asynchronous pulse generator (Ta)

Stairway light switch (Ta) Multiple function switch (Ta)

Stopwatch (Ta)

Parameter p only applies for displaying the values of AQ, level 1, level 2, MaxL, StSp, and Rate in a message text.

A timing diagram for AQ

Description of function

If the input En is set, then the function sets the value StSp + Offset "B" for 100 ms.

Then, depending on the connection of Sel, the function runs from the level StSp + Offset "B" to either level 1 or level 2 at the acceleration set in Rate.

If the input St is set, the function runs to a level of StSp + B at the acceleration set in Rate. Then the function holds the level at StSp + Offset "B" for 100 ms. After 100 ms, the level is set to Offset "B". output AQ. The scaled value (output AQ) is 0.

If the input St is set, the function can only be restarted once the inputs St and En have been reset.

Connection Description

Input En ( )

Parameter

Output AQ

Enable the analogue math function block.

V1: Value 1: First operand V2: Value 2: Second operand V3: Value 3: Third operand V4: Value 4: Forth operand

Operator 1: First operator Operator 2: Second operator Operator 3: Third operator

Priority 1: Priority of the first operation Priority 2: Priority of the second

operation Priority 3: Priority of the third

operation

P: number of decimals Range of values: 0,1,2,3

The output AQ is the result of the equation formed from the operand values and operators. AQ will be set to 32767 if a divide by 0 or overflow occurs, and -32768 if a negative overflow (underflow) occurs.

If input Sel has been changed, depending on the connection of Sel, the function runs from the current target level to the new target level at the rate that is specified.

If the input En is reset, the function immediately sets the current level to Offset "B".

The current level is updated every 100 ms. Note the relationship between output AQ and the current level:

Output AQ = (current level – Offset "B" ) / Gain "A"

Analogue Math

Description of function

The analogue math block calculates the value AQ of an equation formed from the user-defined operands and operators.

100 -

25 /(L) 2 +(M) 1

Parameter p (number of decimals)

The values V1, V2, V3, and V4 can be provided by the actual value of another already-programmed function:

Analog comparator (Ax – Ay) Analog threshold trigger (Ax)

Analog amplifier (Ax) Analog multiplexer (AQ)

Analog ramp (AQ) Mathematic instruction (AQ)

PI controller (AQ) Up/down counter (Cnt)

Analog filter (AQ) Average value (AQ)

Max/Min (AQ) On-delay (Ta)

Off-delay (Ta) On-/off-delay (Ta)

Retentive on-delay (Ta) Wiping relay(pulse output) (Ta)

Edge triggered wiping relay (Ta)

Asynchronous pulse generator (Ta)

Stairway light switch (Ta) Multiple function switch (Ta)

Stopwatch (Ta)

Parameter p applies to the display of V1, V2, V3, V4, and AQ in a message text.

of error that occurred. You can program an analogue math error detection function block in your circuit program to detect these errors, and to control the program behaviour as needed. You program one analogue math error detection function block to reference one specific analogue math function block.

Examples

The following tables show some simple example analogue math block parameters, and the resulting equations and output values:

V1 Operator1 V2 Operator2 V3 Operator3 V4 12 +(M) 6 /(H) 3 -(L) 1

Equation: (12 + (6 / 3)) - 1

Result: 13

V1 Operator1 V2 Operator2 V3 Operator3 V4 2 +(L) 3 *(M) 1 +(H) 4

Equation: 2+ (3*(1+4))

Result: 17

V1 Operator1 V2 Operator2 V3 Operator3 V4

(H)

Equation: (100 – 25) / (2 + 1)

Result: 25

Description of the function

The analogue math function combines the four operands and three operators to form an equation. The operator can be any one of the four standard operators: +, -, *, or /. For each operator, you must set a unique priority of High ("H"), Medium ("M"), or Low ("L"). The high operation will be performed first, followed by the medium operation, and then by the low operation. You must have exactly one operation of each priority. The operand values can reference another previouslydefined function to provide the value. The analogue math function rounds the result to the nearest integer value.

The number of operand values is fixed at four and the number of operators is fixed at 3. If you need to use fewer operands, use constructions such as " + 0" or " * 1" to fill the remaining parameters.

You can also configure the behaviour of the function when the Enable parameter "En"=0. The function block can either retain its last value or be set to 0.

Possible errors: Zero division and overflow

If the analogue math function block execution results in zero division or overflow, it sets internal bits that indicate the type

Analogue Math Error Detection

Description of function

The analogue math error detection block sets an output if an error has occurred in the referenced analogue math function block.

Connection Description

Input En ( )

Enable the analogue math error detection function block.

Input R ( ) Reset the output

Referenced FB: block number of an analogue math instruction

Error to detect: Zero division,

Parameter

Overflow, or Zero division OR Overflow.

Auto Reset: Reset the output when the failure condition clears.

Sn (Number of samples): determines

Q is set high if the error to detect

Output Q

occurred in the last execution of the referenced analogue math function block.

Parameter Referenced FB

bit set by the analogue math instruction at the end of its execution: 1 if the error occurred, 0 if not. OF represents the overflow bit set by the analogue math instruction: 1 if the error occurred, 0 if not. Zero division OR Overflow represents the logical OR of the zero division bit and the overflow bit of the referenced analogue math instruction. Output (Q) represents the output of the analogue math error detection function. An “x” indicates that the bit can be either 0 or 1 with no influence on the output.

Error to Detect Zero Of Output

Zero division 1 X 1 Zero division 0 X 0

Overflow X 1 1

Overflow X 0 0 Zero division OR Overflow 1 0 1 Zero division OR Overflow 0 1 1 Zero division OR Overflow 1 1 1 Zero division OR Overflow 0 0 0

If the Referenced Analog Math FB is null, then the output is always 0.

The value for the Referenced FB parameter references the block number of an already-programmed analogue math function block.

Description of the function

The analogue math error detection block sets the output when the referenced analogue math function block has an error. You can program the function to set the output on a zero division error, an overflow error, or when either type of error occurs.

If you select the automatically reset checkbox, the output is reset prior to the next execution of the function block. If not, the output retains its state until the analogue math error detection block is reset with the R parameter.

In any scanning cycle, if the referenced analogue math function block executes before the analogue math error detection function block, the error is detected in the same scan cycle. if the referenced analogue math function block executes after the analogue math error detection function block, the error is detected in the next scan cycle.

Analogue math error detection logic table

In the table below, Error to Detect represents the parameter of the analogue math error detection instruction that selects which type of error to detect. Zero represents the zero division

Analogue Filter

Description of function

Connection Description

Analogue Inputs Analogue Outputs

Input Ax

Parameter

Analogue Flags The block number of a function with

analogue output

how many analogue values are sampled within the program cycles that are determined by the set number of samples. xLogic samples an analogue value within every program cycle. The number of program cycles is equal to the set number of samples.

Possible settings:

8, 16, 32, 64, 128, 256

Output AQ

AQ outputs an average value of the analogue input Ax over the current number of samples, and it is set or reset depending on the analogue input and the number of samples.

* Analog inputs: 0 to 10 V corresponds with 0 to 1000 (internal value).

Description of function

The function outputs the average value after sampling the analogue input signal according to the set number of samples. This SFB can reduce the error of the analogue input signal.

NOTICE: There is a maximum of eight analogue filter function blocks available for use in the circuit program in xLogicsoft.

Max/Min

Description of function

Connection Description

The function of input En (Enable)

Input En ( )

depends on the settings of parameter Mode and the selection of checkbox "when En = 0, reset Max/Min".

Parameter

You can set the number of samples to the following values:

After you set the parameter, the analogue filter calculates the average value of the samples and assigns this value to AQ.

Timing diagram

Input S1

Input Ax

Parameter

This input is enabled when you set Mode =2:

A positive transition (0 to 1) at input S1 sets the output AQ to the maximum value.

A negative transition (1 to 0) at input S1 sets the output AQ to the minimum value.

Input Ax is one of the following analogue signals:

Analog Inputs Analog Outputs Analogue flags Block number of a function with

analogue output Mode

Possible settings: 0, 1, 2, 3 Mode = 0: AQ = Min Mode = 1: AQ = Max Mode = 2 and S1= 0 (low): AQ = Min Mode = 2 and S1= 1 (high): AQ = Max Mode = 3 or a block value is

referenced: AQ = Ax AQ outputs a minimum, maximum, or

actual value depending on the inputs,

Output AQ

or is reset to 0 is configured to do so when the function is disabled

Analog inputs: 0 to 10 V corresponds with 0 to 1000 (internal value).

Timing diagram

Parameter Mode

You can set the values for parameter Mode based on the actual values of another already-programmed function:

Analog comparator (Ax – Ay) Analog threshold trigger (Ax)

Analog amplifier (Ax) Analog multiplexer (AQ)

Analog ramp (AQ) Mathematic instruction (AQ)

PI controller (AQ) Up/down counter (Cnt)

Analog filter (AQ) Average value (AQ)

Max/Min (AQ) On-delay (Ta)

Off-delay (Ta) On-/off-delay (Ta)

Retentive on-delay (Ta) Wiping relay(pulse output) (Ta)

Edge triggered wiping relay (Ta)

Asynchronous pulse generator (Ta)

Description of the function

If you select the check box "when En = 0, reset Max/Min":

En = 0: The function sets the AQ value to 0.

En = 1: The function outputs a value at AQ, depending on the settings of Mode and S1.

If you do not select the checkbox "when En = 0, reset Max/Min":

En = 0: The function holds the value of AQ at the current value.

En = 1: The function outputs a value at AQ, depending on the settings of Mode and S1.

Mode = 0: The function sets AQ to the minimum value

Mode = 1: The function sets AQ to the maximum value

Mode = 2 and S1 = 0: The function sets AQ to the minimum value

Mode = 2 and S1 = 1: The function sets AQ to the maximum value

Stairway light switch (Ta) Multiple function switch (Ta)

Stopwatch (Ta)

You can select the required function by the block number.

Mode = 3 or a block value is referenced: The function outputs actual analogue input value.

St (Sampling time): You can set it to

Max/Min block upper/lower function

In the dialogue box of Max/Min block, there is an upper/lower limit setting, when the block output the AQ value is less than the lower value, the AQ shall be equal to the Lower value; While the block output the AQ value is more than the upper value, the AQ shall be equal to the upper value.

If someone wants to use the upper/lower limitation for other function blocks. such upper/lower limit function can be used, then this block can be referenced as other blocks parameters when programming.

Here is an example:

Someone wants to use the panel key to change the on-delay parameters for 1s—10s in the text message block, if the value which user set exceeds such range, then it will crush the machine, hence we must add the upper/lower limitation in the program to avoid such trouble.

Output AQ

The range of values:

If St = Seconds: 1 to 59

If St = Days: 1 to 365

If St = Hours: 1 to 23

If St = Minutes: 1 to 59

Sn (Number of samples):

The range of values:

If St = Seconds: 1 to St*100

If St = Days: 1 to 32767

If St = Hours: 1 to 32767

If St = Minutes and St ≤ 5 minutes: 1 to St*6000

If St = Minutes and St ≥ 6 minutes: 1 to 32767

AQ outputs the average value over the specified time of sampling.

* Analog Inputs: 0 to 10 V corresponds with 0 to 1000 (internal value).

Average Value

Description of function

The average value function samples the analogue input signal during the configured time period and outputs the average value at AQ.

Connection Description

A positive edge (0 to 1 transition) at input En (Enable) sets the output AQ to

Input En ( )

Input R ( )

Parameter

the average value of input Ax after the configured time. A negative edge (1 to 0 transition) holds the output at its last calculated value.

A positive edge (0 to 1 transition) at input R (Reset) resets the output AQ to

Seconds, Days, Hours or Minutes.

Parameter St and Sn

Parameter St represents the sampling time and parameter Sn represents the number of samples.

Timing diagram

0 x Status unchanged

1 0 Reset

0 1

Set

1 0 Reset

Description of the function

When En = 1, the average value function calculates the average value of the samples during the configured time interval. At the end of the sampling time, this function sets output AQ to this calculated average value.

When En = 0, the calculation stops, and AQ retains the last calculated value. When R = 0, AQ is reset to 0.

Timing diagram

Latching Relay

Description of function

A signal at input S sets output Q. A signal at input R resets output Q.

Connection Description

Input S ( )

Set output Q with a signal at input S (Set).

Reset output Q with a signal at input

Input R ( )

R (Reset). Output Q is reset if S and R are both set (reset has priority over set).

Parameter

Retentivity set (on) = the status is retentive in memory.

Q is set with a signal at input S and

Output Q

remains set until it is reset with a signal at input R.

No parameter of a Latching relay can be set/modified in runtime mode.

Description of the function

The latching relay represents a simple binary memory logic. The output value depends on the input states and the previous status at the output.

Logic table of the latching relay:

S R Q Remark

When retentivity is enabled, the output signal corresponds to the signal status prior to the power failure.

Pulse Relay

Description of function

The output is set and reset with a short one-shot at the inputs S and R respectively.

Connection Description

Trg input ( )

Input S ( )

Input R ( )

Parameter

Output Q

You switch output Q on or off with a signal at input Trg (Trigger) input.

A one-shot at input S (Set) sets the output to logical 1.

A one-shot at input R (Reset) resets the output to logical 0

Selection: RS (input R priority), or SR (input S priority) Retentivity set (on) = the status is

retentive in memory. Q is switched on with a signal at Trg

and is reset again at the next Trg pulse if both S and R = 0.

Description of the function

The status of output Q changes with each 0 to 1 transition at input Trg and if both S and R = 0, i.e. the output is switched on or off.

Input Trg does not influence the SFB when S = 1 or R = 1.

A one-shot at input S sets the pulse relay, i.e. the output is set to logical 1.

A one-shot at input R resets the pulse relay to its initial state, i.e. the output is set to logical 0.

Either the input R takes priority over input S (i.e. the signal at input S has no effect as long as R = 1), or the input S takes priority over input R (i.e. the signal at input R has no effect as long as S = 1), depending on your configuration.

Message Text

No parameter of Latching relay can be set/modified in runtime mode.

Timing diagram

Description of function

Display message texts and parameters of other blocks in RUN mode.

Connection Description

Input En ( )

Input P

Parameter

A 0 to 1 transition at En (Enable) triggers the output of the message text.

P is the priority of the message text. 1 is the lowest, 32 is the highest

priority. Quit: Acknowledgement of the

message text Text: Input of the message text

Par: Parameter or actual value of another, already configured function (see "Visible parameters or actual values")

Time: Shows the continuously updated time-of-day

Date: Shows the continuously updated date

EnTime: Shows the time of the 0 to 1 transition

EnDate: Shows the date of the 0 to 1

Output Q

Q remains set as long as the message text is queued.

You can press the and keys to step through multiple active message texts.

Example

This is how two message texts could be shown:

Display field of xLogic in RUN mode

Input P configuration

From the input P, you configure the following characteristics of the message text:

Description of the function

With a 0 to 1 transition of the signal at input En, the display outputs your configured message text (actual value, text, TOD, date) in RUN mode.

Acknowledgement disabled (Ack = Off):

The message text is hidden with a 0 to 1 signal transition at input En.

Acknowledgement enabled (Ack = On):

After input En is reset to 0, the message text is displayed until acknowledged by pressing the OK button. The message text cannot be acknowledged as long as input En is high.

If several message text functions were triggered with En=1, the message with the highest priority (1 = lowest, 64=highest) is displayed. This also implies that a new message text is only displayed if its priority is higher than that of previously enabled message texts.

After a message text is disabled or acknowledged, the function automatically shows the previously active message text with the next highest priority.

● Priority

● Acknowledgement

● Message destination

Restrictions

Up to 128 message text functions are available for PR-12, PR18/ELC-22/PR-24.

Shows the parameters of a block selected from the

Particular characteristics to be noted when configuring

"Blocks" area which you can output in the message text.

1 "General" area

Here you will find the following settings: ·



Priority of the message text Check box for message text

acknowledgement

2 Kinds of parameters and the number size selection

area IO status, analogue IO values analogue flags and blocks

can be inserted into LCD for displaying.

3 "Blocks" area

Shows a list of all the circuit program blocks and their parameters.

4 Language selection

5 Animate option

This option is used for display animation on the ELC43TS. See user manual of ELC-43TS for further details.

6 "Insert" button

Button for inserting a parameter selected from the “Block parameters” area.

"Block parameters" or "General parameters" area into the message text.

7 "Block parameters" area

8 "General parameters" area

Shows general parameters such as the current date.

9 "Delete" button

Button for deleting entries from the "Messages" area "Special characters" button Button for inserting special characters in the

"Messages" area

10 "Messages" area

You arrange the message text in this area. Information entered in this area corresponds with that on the xLogic display.

To arrange the message text

From the "Blocks" area, select the block whose parameters you want to output.

Drag and drop the parameters required from the "Block parameters" to the "Messages" area. You may also use the "Insert" button to do so.

In the "Messages" area, you can add parameter data as required.

Particular characteristics to be noted when configuring

The message text can be configured in the block properties dialogue. You can enter up to 4 lines for each message text (the text display of the xLogic has 4 x 16 characters) and set the priority. You can move to the next line using the cursor keys or the mouse. Hit the [ENTER] key to confirm all your entries in the block properties dialogue and to close the dialogue.

You may also enter the actual values of other blocks in the text lines. To do so, select the relevant block from the Block dialogue. A Parameter dialogue opens to display a list of all parameters available for the selected block. The block parameter you select in this dialogue is written to the selected text line. The actual parameter value is now included when you call the message text.

Set the "Acknowledge message" attribute to specify whether a message is being acknowledged before it is closed.

A. I/O status of CPU and extensions

B. Blocks

C. Analog input value of CPU and extensions

D. The analogue output value of CPU and extensions

E. F (digital flag) status

G. M status

F. AF (analogue flag) value

H. AM value

With a text message, the text can be displayed as a large number (6 bits or 4 bits). This feature can only be used in PR12, PR-18, ELC-22, PR-24 and PR-26 Series CPUs.

6-bit

4-bit

Animate option

This option is for the ELC-43TS touch screen, it is used to trigger the pictures saved in the screen, please refer to the ELC-43TS User Guide for detailed information.

B. Change the page to display the message text contents using the arrow keys.

C. Press “OK” for 3 seconds to enter into edit mode.

How to change the parameters of blocks in a displayed message?

To change the parameters of a displayed message, press “OK” key for 3 seconds.

Steps to Follow:

A. Insert the parameters of the block into the message text. (Here is an On-delay).

D. Modify the value by pressing the arrow keys and confirm with the OK key.

CPU Cover

This block cannot be found in the block list as it is set as default by the system of xLogic. To change the CPU Cover text, use your mouse and click “Tools” menu->select “Edit Cover HMI” in xLogicsoft.

Type: Sets either a pushbutton action

Retentivity set (on) = the status is

Description of function

Display the status (Run or Stop) of xLogic when power-on or simulation by software.

Particular characteristics to be noted when configuring

On the PLC’s sceen:

Output Q

retentive in memory. Output Q remains set 1, as long as

En=1 and the status at the parameter Type = Switch and Status = On.

Output Q is set for the duration of one cycle if EN=1 and the status at the parameters Type = momentary (pushbutton) and Status = On.

Softkey

Description of function

This SFB provides the action of a mechanical pushbutton or switch.

Connection Description

Output Q is set with a 0 to 1 signal

Input En ( )

Parameter

transition at input En (Enable) and if, in addition, 'Status=On' has been confirmed in configuration mode.

for one cycle or a switching action of the function.

Status: On or Off state that is applied in the initial cycle after program startup, is retentivity is not set.

Factory state

The default of 'Type' is 'momentary action switch'.

Timing diagram

Description of the function

The output is set, when input En is set and the 'Status' parameter is set to 'On' and confirmed with OK. This action is performed irrespective of a configured switch or pushbutton function.

The output is reset to '0' in the following three cases:

1. With a 1 to 0 signal transition at input En.

2. When a pushbutton function is configured, and one cycle has expired after its actuation.

3. When the 'Status' parameter sets the 'Off' status in configuration mode, and this has been confirmed with OK.

Shift register bit that determines the

Particular characteristics to be noted when configuring

The softkey can be used both with momentary push button or switching action. At the status parameter, you can define the on (actuated) or off state for the switch/push button.

If the softkey is assigned a push button action, the output is always set for the duration of one cycle with a 0 to 1 transition at input En when the push button is in on state, or if the push button state changes from Off to On when En=1.

Parameters of softkey in message texts block:

1. The “ok” means you can press the ok button to switch the status of the softkey block after its parameter inserted into message texts.

2. The “Esc” means you can press the ESC button to switch the status of the softkey block after its parameter inserted into message texts.

3. The status of softkey block is also can be inserted into the message texts block for displaying.

Trg input ( )

Input Dir

Parameter

Output Q

The SFB is started with a positive edge (0 t 1 transition) at input Trg (Trigger). A 1 to 0 transition is irrelevant.

You define the shift direction of the shift register bits S1...S8 at the Dir input:

Dir = 0: shift up (S1 >> S8) Dir = 1: shift down (S8 >> S1)

value of output Q.

Possible settings: S1 ... S8

Retentivity set (on) = the status is retentive in memory.

The output value corresponds to the configured shift register bit.

Shift Register

Description of function

The shift register function can be used to read an input value and to shift the bits. The output value corresponds to the configured shift register bit. The shift direction can be changed at a special input.

Connection Description Input In The function when started reads this

input value.

Timing diagram

Setting the Par parameter

This special function is not available in parameter assignment mode.

A: Gain

Description of function

The function reads the value of input In with a positive edge (0 to 1 transition) at input Trg (Trigger).

This value is written to shift register bits S1 or S8, depending on the set shift direction:



Shift up: S1 accepts the value of input In; the previous

value of S1 is shifted to S2, S2 is shifted to S3, etc.

Shift down: S8 accepts the value of input In; the



previous value of S8 is shifted to S7, S7 is shifted to S6, etc.

Q outputs the value of the configured shift register bits.

If retentivity is not enabled, the shift function restarts at S1 or S8 after a power failure.

NOTICE: The special function shift register can be used only once in the circuit program.

Pulse Width Modulator (PWM)

Description of function

The Pulse Width Modulator (PWM) instruction modulates the analogue input value Ax to a pulsed digital output signal. The pulse width is proportional to the analogue value Ax.

Connection Description

A positive edge (0 to 1 transition) at

Input En ( )

input En enables the PWM function block.

Input Ax

Analog signal to be modulated to a pulsed digital output signal.

Range of values: +- 10.00

B: Zero offset Range of values: +- 10,000

Parameter

PT: Periodic time over which the digital output is modulated

p: Number of decimals Range of values: 0, 1, 2, 3

Q is set or reset for the proportion of

Output Q

each time period according to the proportion of the standardized value Ax to the analogue value range.

Parameter PT

The periodic time PT can be provided by the actual value of another already-programmed function:

Analog comparator (Ax – Ay) Analog threshold trigger (Ax)

Analog amplifier (Ax) Analog multiplexer (AQ)

Analog ramp (AQ) Mathematic instruction (AQ)

PI controller (AQ) Up/down counter (Cnt)

Analog filter (AQ) Average value (AQ)

Max/Min (AQ) On-delay (Ta)

Off-delay (Ta) On-/off-delay (Ta)

Retentive on-delay (Ta) Wiping relay(pulse output) (Ta)

Edge triggered wiping relay (Ta)

Asynchronous pulse generator (Ta)

Stairway light switch (Ta) Multiple function switch (Ta)

Stopwatch (Ta)

Parameter p (number of decimals)

Parameter p applies only to the display of the Ax value in a message text.

Description of the function

The function reads the value of the signal at the analogue input Ax.

This value is multiplied by the value of parameter A (gain). Parameter B (offset) is added to the product, as follows:

(Ax * Gain) + Offset = Actual value Ax

The function block calculates the proportion of the value Ax to the range. The block sets the digital output Q high for the same proportion of the PT (periodic time) parameter and sets Q low for the remainder of the time period.

Examples of Timing Diagrams

The following examples show how the PWM instruction modulates a digital output signal from the analogue input value:

Example 1

The digital output of the PWM function is 3 seconds high, 7 seconds low, 3 seconds high, 7 seconds low and continues in that pattern as long as parameter "En" = high.

Calculation rule

Q = 1, for (Ax – Min) / (Max – Min) of time period PT Q = 0, for PT – [(Ax – Min) / (Max – Min)] of time period PT.

Note: Ax in this calculation refers to the actual value Ax as calculated using the Gain and Offset. Min and Max refer to the minimum and maximum values specified for the range

Special feature.

The standard output frequency of xLogic is up to 30Hz. By configuring the PWM function block as shown below a frequency of up to 10 kHz can be obtained on the following CPU outputs:

 PR-12 – Outputs Q3 and Q4  PR-18 and ELC-22 (PNP Transistor) – Outputs Q5 and Q6  PR-24 and PR-26 – Outputs Q7 and Q8

By the following configuration:

Analog input value: 500 (range 0...1000) Periodic time T: 4 seconds

The digital output of the PWM function is 2 seconds high, 2 seconds low, 2 seconds high, 2 seconds low and continues in that pattern as long as parameter "En" = high.

If the special output is selected in the property dialogue box of PWM block, then the unit of “periodic time” will be changed from s:1/100s to s:1/1000s, so if you input 3 (1/1000s), then its frequency will be 1000/3 Hz.

Example 2

Analog input value: 300 (range 0...1000) Periodic time T: 10 seconds

NOTICE:

1. The periodic time must be no less than 3 ms.

2. If the specific output is selected in the property dialogue box of PWM block, then the output pin of the PWM function block cannot be linked as an input to other blocks.

3. Q3, Q4 in the above dialogue box correspond to Q3, Q4 of a PR-12 CPU or Q5, Q6 of a PR-18 and ELC-22 CPUs or Q7 and Q8 of the PR-24 and PR-26 CPUs.

4. The output frequencies of the special channels of the CPUs can be different ONLY if ONE box is ticked. If BOTH boxes are ticked, the outputs will have the same maximum frequency.

Modbus Read

Description of function

When there is a high level at En, the Modbus Read block will be activated and the xLogic shall communicate with a peripheral device as a master via RS232 or RS485 interface. Furthermore, the output will be switched on when communication is established successfully. Otherwise, the output (Q pin) remains “off” which means communication has failed.

A signal at input R resets output Q and disables this block at the same time

Connection Description

A high signal at En input will enable

Input En ( )

“Modbus Read” function block to be activated

04 Read Input Registers(3x)

Output Q

NOTICE: Data register Index: High Low /Low High For example, when the HighLow index is set, and the data 0x0012 was read and saved to AQ, then AQ= 0X0012; however, when the LowHigh index is set, then AQ= 0x1200. Refer to the Modbus RTU Communication Manual for more information.

Description of the function:

In the configuration of our xLogic communication, the xLogic usually serves as a slave via Modbus RTU Protocol and can communicate with a master directly. That’s to say, any device communicating with xLogic sends a command to it, and then its response will be sent out only when the xLogic has received the command, just as the below figure shows:

communication status. Successful communication, Q=1; Failed communication, Q=0;

Input R ( )

Parameter

To disable the MODBUS read function and set the output to 0 via the R (Reset) input. Reset has priority over En

Slave address: 1 is a default.

Communication protocol: Modbus (RTU)

Communication parameter: baud rate (BPS), Data bits, Stop bits,

Parity, Overtime (response timeout)

Comm Type: RS232 or RS485(Communication interface of xLogic)

Data register Index: High Low /Low High

Command:

01 Read coils(0x)

02 Read Discrete Input(1x)

03 Read Holding Registers(4x)

However, the “Modbus Read” or “Modbus Write” (see next chapter) function blocks should be used if xLogic shall be required to play a role of master to communicate with other slave devices. As the following figure shows:

When you put the “Modbus read” or “Modbus Write” function block in your program the xLogic CPU will behave as a Modbus RTU Master.

Rievtech PR-6AC-R, PR-12DC-DA-R-E, PR-12AC-R, PR-12DC-DA-TN, PR-12DC-DA-R User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual