TECO SG2 User Manual

SG2 Smart PLC

USER Manual

SG2 Programmable Logic Smar t Relay

4KA72X023 Version: 03 2009.07.03 0086-0510-8522-7555

Apply to: SG2 firmware version 3.0,

www.taian-technology.com

PC client program software version 3.0

4KA72X023 I

Contents

Contents

...............................................................................................................................I

Summary of changes .......................................................................................................Ⅳ

Chapter 1: Getting S

tarted ................................................................................................. 1

Examination before Installation.............................................................................................................................. 2

Environmental Precautions .....................................................................................................................................

2

SG2 Model Identification........................................................................................................................................

2

Quick Start Setup...............................................................................................................4

Install SG2 Client Software.................................................................................................................................. 4

Connect Power to SG2 smart relay .....................................................................................................................

4

Connect Programming Cable.................................................................................................................................. 5

Establish Comm

unication ....................................................................................................................................... 5

Write simple program .............................................................................................................................................

6

Chapter 2: Installation ......................................................................................................10

General Specifications ...........................................................................................................................................10

Product Specifications............................................................................................................................................13

Mounting................................................................................................................................................................14

Wiring ....................................................................................................................................................................16

Indicator Light .......................................................................................................................................................18

Chapter 3: Program Tools................................................................................................ 19

PC Programming Software “SG2 Client”............................................................................................................. 19

Installing the Software ..................................................................................................................................

19

Connecting the Software................................................................................................................................20

Start Screen ....................................................................................................................................................20

Ladder Logic Programm

ing Environment .....................................................................................................21

Menus, Icons and Status Displays..................................................................................................................22

Programming..................................................................................................................................................23

Simulation Mode............................................................................................................................................24

Establish Comm

unication ..............................................................................................................................24

Writing Program to smart relay......................................................................................................................25

Operation menu..............................................................................................................................................25

Online Monitoring/Editing.............................................................................................................................26

HMI/TEXT ....................................................................................................................................................27

Program Documentation ................................................................................................................................30

AQ Set…........................................................................................................................................................31

Memory Cartridge (sold separately) ......................................................................................................................33

LCD Display and Keypad ......................................................................................................................................34

Keypad ...........................................................................................................................................................34

Original Screen ..............................................................................................................................................34

LCD Display Main Menu...........................................................................................

....................................36

4KA72X023 II

Chapter 4: Relay Ladder Logic Programming .................................................................45

Common Memory Types........................................................................................................................................45

Specialty Memory T

ypes........................................................................................................................................48

Output Instructions................................................................................................................................................

49

Analog memory type..............................................................................................................................................50

Timer Instruction....................................................................................................................................................51

Counter Instructions

.............................................................................................................................................. 59

Real Time Clock (RTC) Instructions ....................................................................................................................

69

Comparator Instructions.........................................................................................................................................76

HMI Display Instructions

...................................................................................................................................... 79

PWM Output Instruction (DC Transistor Output

Models Only)............................................................................82

Data Link/Remote I/O Instruction (SG2-20Vxxx m

odel only)..............................................................................85

SHIFT (shift output)

.............................................................................................................................................. 88

AQ (Analog Output) .............................................................................................................................................

89

AS (Add-Subtract)

.................................................................................................................................................90

MD (MUL-DIV) ....................................................................................................................................................91

PID (Proportion- Integral- Differential).................................................................................................................92

MX (Multiplexer)...................................................................................................................................................93

AR (Analog-Ramp)................................................................................................................................................94

DR (Data register)..................................................................................................................................................96

MU (MODBUS) (only V

type model) .................................................................................................................. 98

Chapter 5: Function Block Diagram Programming .......................................................101

Coil Block Instruction..........................................................................................................................................101

HMI..............................................................................................................................................................102

PWM function block (only transis

tor output version)..................................................................................102

Data Link function block .............................................................................................................................103

SHIFT function block ..................................................................................................................................103

Logic Block Instructions......................................................................................................................................104

AND Logic Diagram....................................................................................................................................104

AND (EDGE) Logic Diagram

.....................................................................................................................104

NAND Logic Diagram.................................................................................................................................105

NAND (EDGE) Logic Diagra

m...................................................................................................................105

OR Logic Dia

gram.......................................................................................................................................105

NOR Logic Diagram....................................................................................................................................106

XOR Logic Diagram....................................................................................................................................106

SR Logic Dia

gram .......................................................................................................................................106

NOT Logic Diagram ....................................................................................................................................106

Pulse Logic Diagram....................................................................................................................................107

BOOLEAN Logic Diagram .........................................................................................................................107

Function Block.....................................................................................................................................................108

Timer Function Block ..................................................................................................................................109

Common Counter function block.................................................................................................................111

High Speed Counter Function Block ...........................................................................................................112

RTC Comparator Function Block ................................................................................................................113

Analog Comparator Function Block ............................................................................................................114

AS (ADD-SUB) func

tion block ...................................................................................................................115

4KA72X023 III

MD (MUL-DIV) function block ..................................................................................................................115

PID (Proportion- Integral- Differential) function block...............................................................................116

MX (Multiplexer) function block

.................................................................................................................116

AR (Analog-Ramp) function block..............................................................................................................116

DR (Data-Register) function block

..............................................................................................................116

MU (MODBUS) function block ..................................................................................................................117

Chapter 6: Hardware Specification ................................................................................118

Normal Specification ...........................................................................................................................................118

Product Specifications..........................................................................................................................................119

Power Specifications............................................................................................................................................120

Normal model machine Specifications ........................................................................................................120

12V DC model Specifications......................................................................................................................121

24V AC model Specifications......................................................................................................................121

Power circuitry diagram...............................................................................................................................122

Input Specific

ations..............................................................................................................................................123

100~240V AC model ...................................................................................................................................123

24V AC model .............................................................................................................................................123

24V DC, 12I/O model..................................................................................................................................124

24V DC, 20I/O model..................................................................................................................................125

Output Specifications...........................................................................................................................................126

Output Port wiring notice.....................................................................................................................................126

Light Load....................................................................................................................................................126

Inductance Load...........................................................................................................................................127

Life of relay..................................................................................................................................................127

Size diagram of SG2 ............................................................................................................................................128

Chapter 7: 20 Pointe V type High-powered Models Instruction....................................129

Function Summarization......................................................................................................................................129

Detail Instruction .................................................................................................................................................129

Remote IO function

......................................................................................................................................131

IO Link Function..........................................................................................................................................132

Modbus RTU master ....................................................................................................................................133

Slaver via Modbus RTU protocol ................................................................................................................135

SG2 Modbus protocol ..........................................................................................................................................136

Chapter 8: Expansion Module........................................................................................137

Summarize ...........................................................................................................................................................137

Digital IO module ................................................................................................................................................139

Analog module.....................................................................................................................................................145

Communication module.......................................................................................................................................148

ModBus module...........................................................................................................................................148

DeviceNet COMM. Module.........................................................................................................................151

ProfiBus .......................................................................................................................................................154

Appendix: Keypad Programming...................................................................................157

Appendix A: Keypad programming in Ladder mode...........................................................................................157

Appendix B: Keypad programming in Ladder FUNCTION BLOCK.................................................................161

4KA72X023 IV

Summary of changes

This user manual is modified by firmware V3.0 and SG2 Client programming software V3.0. SG2 V3.0 adds some

new functions with firmware version V3.0 to strong SG2 function. The upgrade content is shown as the 2 tables

below simply. More information about idiographic function to see function instruction.

Edit and Display

SG2 V3.0 SG2 V2.x

Ladder 300 lines 200 lines

FBD 260blocks 99blocks

LCD 4 lines * 16 characters 4 lines * 12 characters

Contact and function block

input output SG2 V3.0 SG2 V2.x

Auxiliary relay M M M 63(M01~M3F) 15(M1~MF)

Auxiliary relay N N N 63(N01~N3F) Ladder: NO

FBD: 15(N1~NF)

temperature input AT 4(AT01~AT04) NO

analog output AQ 4(AQ01~AQ04) NO

PWM P 2(P01~P02, P01 adds PLSY mode) 1(P1: PWM)

HMI 31(H01~H1F) 15(H1~HF)

Timer T T Ladder: 31(T01~T1F)

FBD: 250(T01~TFA)

15(T1~TF)

Counter C C Ladder: 31(C01~C1F)

FBD: 250(C01~CFA)

15(C1~CF)

RTC R R Ladder: 31(R01~R1F)

FBD: 250(R01~RFA)

15(R1~RF)

Analog Comparator G G Ladder: 31(G01~G1F)

FBD: 250(G01~GFA)

15(G1~GF)

AS(Add-Sub) Ladder: 31(AS01~AS1F)

FBD: 250(AS01~ASFA)

NO

MD(Mul-Div) Ladder: 31(MD01~MD1F)

FBD: 250(MD01~MDFA)

NO

PID Ladder: 15(PI01~PI0F)

FBD: 30(PI01~PI1E)

NO

MX(Multiplexer) Ladder: 15(MX01~MX0F)

FBD: 250(MX01~MXFA)

NO

AR(Analog Ramp) Ladder: 15(AR01~AR0F)

FBD: 30(AR01~AR1E)

NO

DR(Data Register) 240(DR01~DRF0) NO

MU(MODBUS)

NO NO

Ladder: 15(MU01~MU0F)
FBD: 250(MU01~MUFA)

NO

Logic function: BOOLEAN NO Block

B B

260(B001~B260)The capability o

f

99(B01~B99)The capability of each

block is fixed

each block is alterable, and the total
capability of block is 6000bytes

PM05(3rd) PM05(3rd) can be used with all

version of SG2

PM05 can not be used with SG2 V3.x

Chapter 1: Getting Started 1

Chapter 1: Getting Started

The SG2 tiny smart Relay is an electronic device. For safety reasons, please carefully read and follow the paragraphs

with "WARNING" or "CAUTION" symbols. They are important safety precautions to be aware of while transporting,

installing, operating, or examining the SG2 Controller.

WARNING: Personal injury may result from improper operation.

CAUTION: The SG2 smart relay may be damaged by improper operation.

Precaution for Installation

Compliance with the installation instructions and the user manual is absolutely necessary. Failure to comply

could lead to improper operation, equipment damage or in extreme cases even death, serious bodily injury or

considerable damage to property.

When installing the open-board models, insure that no wiring or foreign materials can fall into the exposed

circuits and components. Damage to equipment, fire, or considerable damage to property could result.

Always switch off power before you wire, connect, install, or remove any module.

The wiring for the SG2 smart relay is open and exposed. For the open-board models, all electrical components

are exposed. For this reason, it is recommended the SG2 smart relay be installed in an enclosure or cabinet to prevent

accidental contact or exposure to the electrical circuits and components.

Never install the product in an environment beyond the limits specified in this user manual such as high

temperature, humidity, dust, corrosive gas, vibration, etc.

Precaution for Wiring

Improper wiring and installation could lead to death, serious bodily injury or considerable damage to property.

The SG2 smart relay should only be installed and wired by properly experienced and certified personnel.

Make sure the wiring of the SG2 smart relay meets all applicable regulations and codes including local and

national standards and codes.

Be sure to properly size cables for the required current rating.

Always separate AC wiring, DC wiring with high-frequency switching cycles, and low-voltage signal wiring.

Precaution for Operation

To insure safety with the application of the SG2 smart relay, complete functional and safety testing must be

conducted. Only run the SG2 after all testing and confirming safe and proper operation is complete. Any potential

faults in the application should be included in the testing. Failure to do so could lead to improper operation,

equipment damage or in extreme cases even Death, serious bodily injury or considerable damage to property.

When the power is on, never contact the terminals, exposed conductors or electrical components. Failure to

comply could lead to improper operation, equipment damage or in extreme cases even death, serious bodily injury or

considerable damage to property.

It is strongly recommended to add safety protection such as an emergency stop and external interlock circuit in

Chapter 1: Getting Started 2

case the SG2 smart relay operation must be shut down immediately.

Examination before Installation

Every SG2 smart relay has been fully tested and examined before shipment. Please carry out the following

examination procedures after unpacking your SG2 smart relay.

• Check to see if the model number of the SG2 matches the model number that you ordered.

• Check to see whether any damage occurred to the SG2 during shipment. Do not connect the SG2 smart relay to the

power supply if there is any sign of damage.

Contact

if you find any abnormal conditions as mentioned above.

Environmental Precautions

The installation site of the SG2 smart relay is very important. It relates directly to the functionality and the life span

of your SG2. Please carefully choose an installation site that meets the following requirements:

• Mount the unit vertically

• Environment temperature: -4°F - 131°F (-20°C - 55°C)

• Avoid placing SG2 close to any heating equipment

• Avoid dripping water, condensation, or humid environment

• Avoid direct sunlight

• Avoid oil, grease, and gas

• Avoid contact with corrosive gases and liquids

• Prevent foreign dust, flecks, or metal scraps from contacting the SG2 smart relay

• Avoid electric-magnetic interference (soldering or power machinery)

• Avoid excessive vibration; if vibration cannot be avoided, an anti-rattle mounting device should be installed to

reduce vibration.

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.

SG2 Model Identification

Quick Start Setup 4

Quick Start Setup

This section is a simple 5-steps guide to connecting, programming and operating your new SG2 smart relay. This is

not intended to be the complete instructions for programming and installation of your system. Many steps refer to

other sections in the manual for more detailed information.

Install SG2 Client Software

Install the SG2 Client Software from CD or from the free internet download at www.taian-technology.com

Connect Power to SG2 smart relay

Connect power to the Smart Relay using the below wiring diagrams for AC or DC supply for the applicable modules.

See “Chapter 2: Installation” for complete wiring and installation instructions.

Quick Start Setup 5

Connect Programming Cable

Remove the plastic connector cover from the SG2 using a flathead screwdriver as shown in the figure below. Insert

the plastic connector end of the programming cable into the SG2 smart relay as shown in the figure below. Connect

the opposite end of the cable to an RS232 serial port on the computer.

Establish Communication

a. Open the SG2 Client software and select “New Ladder Document” as shown below left.

b. Select “Operation/Link Com Port…” as shown below right.

Quick Start Setup 6

c. Select the correct Com Port number where the programming cable is connected to the computer then press the

“L

ink” button.

d. The SG2 Client will then begin to detect the connected smart relay to complete its connection.

Write simple program

a. Write a simple one rung program by clicking on the leftmost cell at line 001 of the programming grid, then click

on the “M” contact icon on the ladder toolbar, as shown below. Select M01 and press the OK button. See Chapter

4: Ladder Programming instructions for complete instruction set definitions.

Note: If the ladder toolbar is not visible at the bottom of the screen, select View>>Ladder Toolbar from the menu to

enable.

Quick Start Setup 7

b. Use the “A” key on your keyboard (or the “A” icon on the ladder toolbar) to draw the horizontal circuit line from

the M contact to the right most cell, as shown below.

c. Select the “Q” coil icon from the ladder toolbar and drop it on the right most cells. Select Q01 from the dialog and

press OK as shown below. See Chapter 4: Ladder Programming instructions for complete instruction set definitions.

Quick Start Setup 8

d. Test the simple program. From the Operation menu, select the Write function and write the program to the

connected smart relay as shown below.

e. Select the RUN icon from the toolbar, and select “No” when the pop-up message asks “Do you want to read

program from module?”, as shown below.

Quick Start Setup 9

f. On the Input Status dialog, click on M01 to activate the contact M01 which will turn ON the Output Q01 as shown

below. The highlighted circuit will show active and the first Output (Q01) on the connected smart relay will be ON.

See Chapter 3: Programming Tools for more detailed software information.

Chapter 2 Installation 10

Chapter 2: Installation

General Specifications

SG2 is a miniature smart Relay with a maximum of 44 I/O points and can be programmed in Relay Ladder Logic or

FBD (Function Block Diagram) program. The SG2 can expand to its maximum I/O count by adding 3 groups of

4-input and 4-output modules.

Power Supply

Input Power Voltage Range

24V DC Models: 20.4-28.8V

12V DC Models: 10.4~14.4V

AC Models: 85-265V

24V AC Models: 20.4-28.8V

Power Consumption

24VDC: 12-point :125mA

20-point: 185mA

12VDC: 12-point: 195mA

20-point: 265mA

100-240VAC: 100mA

24VAC: 290mA

Wire Size (all terminals) 26 to 14 AWG

Programming

Programming languages Ladder/Function Block Diagram

Program Memory 300 Lines or 260 Function Blocks

Programming storage media Flash

Execution Speed 10ms/cycle

LCD Display 4 lines x 16 characters

Timers

Maximum Number

Ladder: 31；FBD

: 250

Timing ranges 0.01s–9999min

Counters

Maximum Number

Ladder: 31；FBD

: 250

Highest count 999999

Resolution 1

RTC (Real Time Clock)

Maximum Number

Ladder: 31；FBD

: 250

Resolution 1min

Time span available week, year, month, day, hour, min

Compare Instructions (Analog, Analog*gain + Offset, Timer, Counter, Temperature Input

(AT), Analog Output (AQ), AS, MD, PI, MX, AR and DR Values)

Chapter 2 Installation 11

Analog compare

Maximum Number

Ladder: 31；FBD

: 250

Compare versus other inputs

Analog, Timer, Counter, Temperature Input (AT),

An

alog Output (AQ), Analog*gain + Offset, AS, MD,

PI, MX, AR , DR , or Numeric values

Environmental

Enclosure Type IP20

Maximum Vibration 1G according to IEC60068-2-6

Operating Temperature Range -4° to 131°F (-20° to 55°C)

Storage Temperature Range -40° to 158°F (-40° to 70°C)

Maximum Humidity 90% (Relative, non-condensing)

Vibration 0.075mm amplitude, 1.0g acceleration

Weigh t

8-point:190g

10,12-point: 230g (C type: 160g)

20-point: 345g (C type: 250g)

Agency Approvals CUL , CE, UL

Discrete Inputs

Current consumption

3.2mA @24VDC

4mA @12VDC

1.3mA @100-240VAC

3.3mA @24VAC

Input Signal ”OFF” Threshold

24VDC: < 5VDC;

12VDC: < 2.5VDC

100-240VAC : < 40VAC

24VAC: <6VAC

Input Signal ”ON” Threshold

24VDC: > 15VDC;

12VDC: > 7.5VDC

100-240VAC : > 79VAC

24VAC: >14VAC

Input On delay

24, 12VDC: 5ms

240VAC: 25ms;

120VAC: 50ms

24VAC: 5ms

Input Off Delay

24, 12VDC: 3ms

240VAC: 90/85ms 50/60Hz ;

120VAC: 50/45ms 50/60Hz

24VAC: 3ms

Transistor device compatibility NPN, 3-wire device only

High Speed Input frequency 1kHz

Standard Input frequency < 40 Hz

Required protection Inverse voltage protection required

Chapter 2 Installation 12

Analog Inputs

Resolution

Basic unit: 12 bit

Expansion unit: 12bit

Voltage Range acceptable

Basic unit: Analog input: 0-10VDC voltage,

24VDC when used as discrete input;

Expansion unit: Analog input: 0-10VDC voltage or

0-20mA current

Input Signal ”OFF” Threshold < 5VDC (as 24VDC discreet input)

Input Signal ”ON” Threshold > 9.8VDC (as 24VDC discreet input)

Isolation None

Short circuit protection Yes

Total number available

Basic unit: A01-A04

Expansion unit: A05-A08

Relay Outputs

Contact material Ag Alloy

Current rating 8A

HP rating 1/3HP@120V 1/2HP@250V

Maximum Load

Resistive: 8A /point

Inductive: 4A /point

Maximum operating time 15ms (normal condition)

Life expectancy (rated load) 100k operations

Minimum load 16.7mA

Transistor Outputs

PWM max. output frequency 1.0kHz (0.5ms on,0.5ms off)

Standard max. output frequency 100Hz

Voltage specification 10-28.8VDC

Current capacity 1A

Maximum Load

Resistive: 0.5A/point

Inductive: 0.3A/point

Minimum Load 0.2mA

Chapter 2 Installation 13

Product Specifications

Part # Input Power Inputs Outputs

Display &
Keyp

ad

RS-485 Communications Max I/O

SG2-12HR-D 6 DC, 2 Analog 4 Relay

√, Z01-Z04

N

/A 36 + 4 *1

SG2-12HT-D 6 DC, 2 Analog 4 Trans.

√, Z01-Z04

N

/A 36 + 4 *1

SG2-20HR-D 8 DC, 4 Analog 8 Relay

√, Z01-Z04

N

/A 44 + 4 *1

SG2-20HT-D 8 DC, 4 Analog 8 Trans.

√, Z01-Z04

N

/A 44 + 4 *1

SG2-20VR-D 8 DC, 4 Analog 8 Relay

√, Z01-Z04

Built-in MODBUS 44 + 4 *1

SG2-20VT-D

24 VDC

8 DC, 4 Analog 8 Trans.

√, Z01-Z04

Built-in MODBUS 44 + 4 *1

SG2-12HR-12D 6 DC, 2 Analog 4 Relay

√, Z01-Z04

N

/A 36 + 4 *1

SG2-20HR-12D 8 DC, 4 Analog 8 Relay

√, Z01-Z04

N

/A 44 + 4 *1

SG2-20VR-12D

12 VDC

8 DC, 4 Analog 8 Relay

√, Z01-Z04

Built-in MODBUS 44 + 4 *1

SG2-10HR-A 6 AC 4 Relay

√, Z01-Z04

N

/A 34+ 4 *1

SG2-20HR-A

100-240 VAC

12 AC 8 Relay

√, Z01-Z04

N

/A 44 + 4 *1

SG2-12HR-24A 8 AC 4 Relay

√, Z01-Z04

N

/A 36 + 4 *1

SG2-20HR-24A

24VDC

12 AC 8 Relay

√, Z01-Z04

N

/A 44 + 4 *1

Expansion Modules

SG2-8ER-D 4 DC 4 Relay N/A

N

/A

N

/A

SG2-8ET-D

24VDC

4 DC 4 Trans. N/A

N

/A

N

/A

SG2-8ER-A 100-240VAC 4 AC 4 Relay N/A

N

/A

N

/A

SG2-8ER-24A 24VAC 4 AC 4 Relay N/A

N

/A

N

/A

SG2-4AI 4 Analog

N

/A

N

/A

N

/A

N

/A

SG2-4PT 4 Analog

N

/A

N

/A

N

/A

N

/A

SG2-2AO

N

/A 2 AnalogN/A

N

/A

N

/A

SG2-MBUS Communications Module, RS-485 ModBus RTU slaver

SG2-DNET Communications Module, DeviceNet Group2 slaver

SG2-PBUS Communications Module, Profibus-DP slaver

EN01

24 VDC

Communications Module, TCP/IP

OEM “Blind” Models, No Keypad, No Display

SG2-12KR-D 6 DC, 2 Analog 4 Relay X

N

/A 36

SG2-12KT-D 6 DC, 2 Analog 4 Trans. X N/A 36

SG2-20KR-D 8 DC, 4 Analog 8 Relay X

N

/A 44

SG2-20KT-D

24VDC

8 DC, 4 Analog 8 Trans. X

N

/A 44

SG2-12KR-12D 12VDC 6 DC, 2 Analog 4 Relay X

N

/A 36

SG2-10KR-A 6 AC 4 Relay X N/A 34

SG2-20KR-A

100-240VAC

12 AC 8 Relay X

N

/A 44

OEM “Baseboard” Models, No Keypad, No Display, No Expansion

SG2-12CR-D 6 DC, 2 Analog 4 Relay X

N

/A 12

SG2-12CT-D 6 DC, 2 Analog 4 Trans. X N/A 12

SG2-20CR-D 8 DC, 4 Analog 8 Relay X

N

/A 20

SG2-20CT-D

24VDC

8 DC, 4 Analog 8 Trans. X

N

/A 20

SG2-10CR-A 6 AC 4 Relay X N/A 10

SG2-20CR-A

100-240VAC

12 AC 8 Relay X

N

/A 20

Accessories

SG2-PL01 SG2 Programming Cable, SG2 Programming software

SG2-PM05(3rd) SG2 Memory cartridge

※ If module with keypad and display, Max IO can be added keypad input Z01-Z04.
※ More

information about Product Specifications to see “chapter 6: Product Specifications”.

Chapter 2 Installation 14

Mounting

DIN-rail Mounting

The SG2 smart relay should always be mounted vertically. Press the slots on the back of the SG2 and expansion

module plug CONNECTOR onto the rail until the plastic clamps hold the rails in place. Then connect the expansion

module and CONNECTOR with the Master (press the PRESS-BUTTON simultaneously)

SG2-8ER-A

Output 4 x Relay / 8A

Q1 Q2 Q3 Q4

DC 24V Input 8 x DC(A1,A2 0~10V)

SG2-12HR-D

+

-

I1 I2I4I3

I5

A1I6 A2

Input
4

×AC

L

N

Run

AC 100~240V

X4X1 X2 X3

Output 4 x Relay / 8A

Y1 Y2

Y3 Y4

Chapter 2 Installation 15

It is recommended to apply a DIN-rail end clamp to hold the SG2 in place.

Q3Q1

Output 4 x Relay / 8A

SG2-12HR-D

Q2

SG2-8ER-A

Q4

DC 24V Input 8 x DC(A1,A2 0~10V)

+

-

I1 I3I2 I4

Input
4

×AC

A2I6I5 A1

Run

AC 100~240V

N

L

X2X1 X3 X4

Output 4 x Relay / 8A

Y1 Y2

Y4Y3

Direct Mounting

Use M4 screws to direct mount the SG2 as shown. For direct installation of the expansion module, slide the

expansion module and connect with the Master after the Master is fixed.

Q2

Output 4 x Relay / 8A

SG2-12HR-D

Q1

Y1 Y2

Q3 Q4 Y3 Y4

SG2-8ER-A

Output 4 x Relay / 8A

Run

DC 24V Input 8 x DC(A1,A2 0~10V)

+

-

I1 A2I3I2 I4 I6I5 A1

Input
4

×AC

AC 100~240V

LN

X1

X3X2 X4

Chapter 2 Installation 16

Wiring

WARNING: The I/O signal cables should not be routed parallel to the power cable, or in the same cable trays

to avoid the signal interference.

To avoid a short circuit on the load side, it is recommended to connect a fuse between each output terminals

and loads.

Wire size and Terminal Torque

26...1626...1426...1426...1826...16

AWG

3.5
(0.14in)

lb-in

Nm

0.6

5.4

0.14...1.5

mm

2

0.14...1.50.14...2.50.14...0.75 0.14...2.5

C

C

Input 12/24V DC

DC V Input

+ I5I3 I4I2I1

-

A1I6 A2

DC V INPUT

I7I1+- I4 I5 I6I3I2 A4A2 A3A1I8

+

-

A2A1

A3

A1

+

-

A4A2

Sensor Connection

DC V Input

+ A1I6I4I3I2I1

-

I5 A2 A3A2 A1 A4

Chapter 2 Installation 17

Input 100~240V /24V AC

AC ..V Input ......

I2I1 I4I3 I5 I6NL

AC ..V INPUT ......

I4I1 I3I2NL I7 IBI9I8 IA

IC

I5 I6

Output (Relay)

Output 4 x Relay / 8A

Q1 Q4Q3Q2

Output 8 x Relay / 8A

Q6Q2 Q3Q1 Q4 Q5 Q8Q7

Output (Transistor)

OUTPUT 8 x TR / 0.5A

Q1 Q2

Q4Q3Q1 Q2

OUTPUT 4 x TR / 0.5A

-

+

-

+

-

+

-

+

+

-

+

-

Q8Q7Q5 Q6Q3 Q4

+

--

++

-

++

--

+

-

Chapter 2 Installation 18

Data Link OR Remote I/O Link

A2A3SA4A1 A2 A1

RS485

BA A3SA4

RS485

BA A3A1 A2 AB

RS485

A4

S

The power supply and the I/O supply should share the same power source. Only short circuit the first and the last

module.

When I/O link, the net can connect 8 products in max. (ID: 0-7).

When Remote I/O is available, it only can connect 2 products max (Master & Slave).

①-1A quick-blowing fuse, circuit-breaker or circuit protector
②-Surge absorber (36V DC)
③-Surge absorber (400V AC)
④-Fuse, circuit-breaker or circuit protector
⑤-Inductive load
⑥-Only short circuit the first product and the last product
⑦-Comply with standard: EIA RS-485.

※ More information about V type communication to see “Chapter 7 20 Pointe V type High-powered Models

Instruction”.

K type Indicator Light

There is an indicator light to indicate the status of SG2 (K type) smart, and the below table shows the relationship

between the light and the SG2 status.

State of light Description

Power up, SG2 is stopping

Flicker slow(2Hz), SG2 is running

Flicker quick(5Hz), SG2 is under failure status

—ROM error
—illogicality in user program
—EEPROM error
—expansion model error

Chapter 3 Program Tools 19

Chapter 3: Program Tools

PC Programming Software “SG2 Client”

The SG2 Client programming software provides two edit modes, Ladder Logic and Function Block Diagram (FBD).

The SG2 Client software includes the following features:

1. Easy and convenient program creation and editing.

2. Programs can be saved on a computer for archiving and reuse. Programs can also be uploaded directly from a SG2

and saved or edited.

3. Enables users to print programs for reference and review.

4. The Simulation Mode allows users to run and test their program before it is loaded to the controller.

5. Real-time communication allows the user to monitor and force I/O on the SG2 smart relay operation during RUN

mode.

Installing the Software

Install the SG2 Client Software from CD or from the free internet download at

www.taian-technology.com

Chapter 3 Program Tools 20

Connecting the Software

Remove the plastic connector cover from SG2 using a flathead screwdriver as shown in the figure below. Insert the

plastic connector end of the programming cable into the SG2 smart relay as shown in the figure below. Connect the

opposite end of the cable to an RS232C serial port on the computer.

Start Screen

Run the SG2 Client software and the below Start screen will be displayed. From this screen, you can perform the

following functions

New Ladder Program

Select File -->New -->New LAD to enter the development environment for a new Ladder program.

New FBD Program

Select File -->New -->New FBD to enter the development environment for a new FBD (Function Block Diagram)

program.

Open Existing File

Select File -->Open to choose the type of file to open (Ladder or FBD), and choose the desired program file, and

then click Open.

Chapter 3 Program Tools 21

Ladder Logic Programming Environment

The Ladder Logic Programming Environment includes all the functions for programming and testing the SG2 using

the Ladder Logic programming language. To begin a new program select File-->New, and select the desired model of

SG2, and the number of connected expansion units if applicable, as shown below.

Chapter 3 Program Tools 22

Menus, Icons and Status Displays

The Ladder programming environment includes the following Menus, Icons and Status Displays

1. Menu bar – Five menu selections for program development and retrieval, editing, communication to connected

controllers, configuration of special functions and viewing preference selections.

2. Main Toolbar – (From Left to Right)

Icons for create a new program, open a program, save a program and print a program.

Icons for Keypad, Ladder view, HMI/Text edit and Symbol (comments) edit.

Icons for Monitor, Simulator, Simulator Controller, Controller Mode changes (Run, Stop, and Quit), and Read/Write

programs from/to the SG2 smart relay.

3. Usage List – List for all memory types and addresses used with the current open program. Used addresses are

designated by a “*” symbol below each address.

4. Amount of free programming memory available.

5. Current Mode – operation mode of the controller, or simulator, from the connected PC.

6. Ladder Toolbar – Icons for selecting and entering all available Ladder Logic instructions.

7. Status Bar – Status of current open project and connect SG2 smart relay.

Chapter 3 Program Tools 23

Programming

The SG2 Client software can be programmed by either drag-and-drop of instructions or by using keyboard entry

commands. Below is an example of some common methods of entering programming instructions.

The “A” and “L” keys or icons are used to complete parallel and serial circuits. The right column is for output coils.

Chapter 3 Program Tools 24

Simulation Mode

The SG2 Client software includes a built-in simulator to test and debug programs easily without the need for

downloading to a controller. To activate simulation mode, simply press the red RUN icon. The program below is

shown in simulation mode, identifying the significant available features.

Establish Communication

The following is the simple procedure for establishing communication between PC and the SG2 smart relay.

a. Select “Operation/Link Com Port…” as shown below.

b. Select the correct Com Port number where the programming cable is connected to the computer then press the

“Link” button.

c. The SG2 Client software will then begin to detect the connected smart relay to complete its connection.

Chapter 3 Program Tools 25

Writing Program to smart relay

From the Operation menu, select the Write function and write the program to the connected smart relay as shown

below, or press Write button to write program to connected smart relay as shown below.

Operation menu

The Operation menu, includes several system configuration functions for both online and offline setup. The following

explains the details of each function.

Monitor – Online function for runtime monitor and editing when connected to a controller

Simulator – Offline function for testing and debugging a program.

Simulator Control – Self-motion simulator control

Run-Stop-Quit – Mode change selections for both runtime editing and simulation mode.

Read-Write – Reading and writing programs to and from a connected SG2 smart relay.

RTC Set – Online function for setup of the Real-time clock/calendar (see dialog below left)

Analog Set – setup analog input A01-A08 gain and offset (see dialog below right)

Password – Set a password for accessing the current program after upload to the smart relay

Language – Change SG2 smart relay menu language

Module System Set – Dialog for changing important system setup functions including Module ID,

Remote I/O preferences, Expansion I/O settings, and Retentive memory preferences (Keeping) for (C) Counters, (M)

Auxiliary Coils, and (Z) keypad input set and the LCD Backlight.

Link Com Port – Select the port communication with SG2 smart relay.

Chapter 3 Program Tools 26

Online Monitoring/Editing

The SG2 Client software allows for online monitoring of the currently running program during runtime. Additional

online functions include, I/O forcing, and Mode changes (Run/Stop/Quit).

※ The SG2 Client software does not support runtime logic editing changes. All logic edits to contacts, coils,

Timers/Counters, and circuit connecting lines must be written to the connected smart relay while in Stop mode.

Chapter 3 Program Tools 27

HMI/TEXT

This function block can display information on 16×4 LCD screen. Information displaying can be present value or

target value of Counter, Timer, RTC and Analog comparator etc. Under running mode, to modify the target value of

timer, counter and analog comparator via HMI is available. HMI can display the status of input terminal (I, Z, X) and

Auxiliary terminal M, N (only FBD).

HMI/TEXT setting:

Chapter 3 Program Tools 28

① Enter H01 coil
② Into HMI/TEXT edit frame
③ Choice the “T”
④ Choice the “E”
⑤ Choice T01 current
⑥ Choice T01 current (unit)
⑦ Choice T01 present (unit), user can modify T01 preset value when H coil enable and display on LCD

Download to SG2, and I01 turn ON, or press “SEL” if the H coils is set to mode 1, then the SG2 LCD will display the

first H text as shown below.

Ⅰ, Press “↑” or “↓” to choice the nearest H coil

, Press “SEL”+“↑” or “↓”and “OK” update TⅡ 01 preset value (In this example, 050.0 can update, T01 preset value

depends on HMI/TEXT edit frame setting.)

HMI/TEXT Example:

Chapter 3 Program Tools 29

Power ON and RUN (initial display) Press “↑” (Z01) and display H03 coil

① Press “SEL” to display cursor
Press “↑”, ② “↓”, “←”, “→” to move cursor
Press “SEL” again to choice modified position③
Press “↑”, “↓” to change number and press “←”, “→” to move cursor④
Press “OK” to make sure the modify value⑤

Press “←” (Z02) to disable H03 coil, and the LCD display changes to initial

frame.

Press “↓” to reset Timer (T01、T02、T03) as program designed.

Chapter 3 Program Tools 30

Program Documentation

The SG2 Client software includes the ability to document a program using Symbols and Line Comments. Symbols

are used to label each I/O address up to a length of 12 characters. Line Comments are used to document sections of a

program. Each Line Comment can have up to 4 lines with each line containing up to 50 characters in length. Below

are examples of entering Symbols and Line Comments.

Symbol…

The Symbol editing environment can be access through the menu using the Edit>>symbol… selection or using the

symbol icon on the main toolbar shown below.

The Symbol editing environment allows for documenting all the contact and coil memory types, and selecting display

modes as shown below.

Chapter 3 Program Tools 31

Line Comments

The Line Comment editor is accessed by clicking the “N” icon on the Ladder Toolbar. After clicking on the “N” icon,

to drag the line number you want to comment and release, and then type the desired comments and press OK.

AQ Set…

The AQ editing environment can be access through the menu using the Edit>> AQ Set… selection shown below. The

range of AQ is 0~1000 if the output mode of AQ is voltage mode. And the range is 0~500 if the output mode is

current mode. The preset value of AQ can be set as either a constant or a code of other data. The output mode of AQ

and preset value are set as below. More information about output mode and displaying to see: Chapter 4: Relay

Ladder Logic Programming

Chapter 3 Program Tools 32

Data Register Set…

The content of Data Register is either unsigned or sign, it can be set as shown below. Selecting Unsigned, the range

of DR is 0~65535; and selecting Signed, the range of DR is -32768~32767.

After the operating above, the Data Register editing environment can be access through the menu using the Edit>>
Data Register Set… selection shown below. The preset value of DR can be set as either a constant or a code of other

data type.

DR is set as signed shown below.

Chapter 3 Program Tools 33

Memory Cartridge (sold separately)

PM05 (3rd) is a special kind of PM05, it can be used in all version of SG2. There is an icon on SG2 V3

smart and side of PM05 (3rd).

About to use PM05 and PM05 (3rd) with SG2V2/3, see next figure:

PM05
PM05 (3rd)

SG2V2
SG2V3

PM05 (3rd)

SG2V3

SG2V2

SG2V3

The optional PM05 (3rd) memory cartridge is used to easily transfer programs from one smart relay to another. The

PM05 (3rd) memory cartridge plugs into the same connector as the programming cable (see procedure below).

1. Remove the plastic connector cover from SG2 using a flathead screwdriver as shown in the figure below.

2. Insert the PM05 (3rd) memory cartridge onto the connector as shown below.

3. From the display keypad on the face of the SG2 smart relay, select either WRITE or READ to transfer the

program to PM05 (3rd) or from the PM05 (3rd) memory cartridge to the smart relay.

4, K type and C type, electrify the product, the program in PM05 (3rd) will automatically download and executed.

5, Program in different types are not compatible, here are the regulations:

A-1: 10/12 point type program ---- available in 20 point type

A-2: 20 point type program ---- unavailable in 10/12 point type

B-1: AC type program ---- available in DC type

B-2: DC type program ---- unavailable in AC type

C-1: Relay type program ---- available in Transistor type

C-2: Transistor type program ---- unavailable in Relay type

D-1: Not-V type program ---- available V type

D-2: V type program ---- unavailable Not-V type

E-1: SG2V2 program ---- available SG2V3 type

E-2: SG2V3 program ---- unavailable SG2V2 type

Chapter 3 Program Tools 34

LCD Display and Keypad

Keypad

Most SG2 CPU units include the built-in LCD Display and Keypad. The keypad and display are most often used for

changing timer/counter set points, controller mode changes (Run/Stop), uploading/downloading to the PM05 memory

cartridge, and updating the RTC (Real Time Clock/Calendar). Although, logic programming can be performed from

the keypad and display, it is highly recommended to only perform logic changes using the SG2 Client software.

Below is an overview of the basic keypad and display functions.

Select (SEL) – Used to select the available memory and instruction types for editing. Holding the Select button will

display all “H” HMI/Text messages on the LCD.

OK – Used to accept the selection displayed of an instruction or function. It is also used to select any of the Main

Menu options on the LCD.

Note: Press the “SEL” and “OK” simultaneously to insert a rung above the current active cursor position.

Escape – Used to exit a selected display screen and go to the previous screen. When in a ladder display screen, press

the ESC to display the main menu.

Delete – Used to delete an instruction or rung from the ladder program.
The 4 navigation buttons (↑←↓→) are used to move the cursor throughout the functions of the SG2 display or active
program. The 4 buttons also can be set programmable input coils Z01-Z04 (‘↑’= Z01, ‘←’=Z02, ‘↓’=Z03, ‘→’ =Z04);

Original Screen

LCD displays 4-line state

◎ Original screen as power on

Chapter 3 Program Tools 35

Press the button:

ESC Enter Main Menu screen

Under LADDER Mode, display the state of relays (I ⇔ Z ⇔ Q ⇔ X ⇔ Y ⇔
M ⇔ N ⇔ T ⇔ C ⇔ R ⇔ G ⇔ A ⇔ AT ⇔ AQ) ⇔ Original Screen

SEL+↑ ↓
↑ ↓

Under FBD Mode, display the state of relays (I ⇔ Z ⇔ Q ⇔ X ⇔ Y ⇔ M ⇔
N ⇔ A ⇔ AT ⇔ AQ) ⇔ Original Screen

SEL H Function will be displayed whose mode is 1 as the button is pressed.

SEL+OK Enter RTC setting screen

◎ Expansion display State

※ Expansion module setting: refer to Main Menu “SET”

◎ Other Display State

Ladder edit mode: Coil I, Z, X, Q, Y, M, N, T, C, R, G, D, Analog input A01~A04, Expansion Analog input A05~A08,

temperature analog input AT01~AT04, analog output AQ01~AQ04;

FBD edit mode: Coil I, Z, X, Q, Y, M, N, Analog input A01~A04, Expansion Analog input A05~A08, temperature

analog input AT01~AT04, analog output AQ01~AQ04;

Chapter 3 Program Tools 36

LCD Display Main Menu

(1) The Main Menu as SG2 under ‘STOP’ Mode.

Into ladder main function to press ESC after power on when the user program is ladder type or empty program.

Into FBD main function to press ESC after power on when the user program is FBD type or empty program.

Menu Description

> LADDER Ladder edit

FUN.BLOCK Ladder function block

(timer/counter/RTC …) edit

FBD FBD display

PARAMETER FBD block or LADDER function

block parameter display

RUN RUN or STOP

DATA REGISTER DR display

CLEAR PROG. Clear the user program and the

password

WRITE Save user program to PM05 (3rd)

READ Read user Program from PM05

SET System setting

RTC SET RTC set ting

ANALOG SET Analog setting

PASSWORD Password setting

LANGUAGE Select the language

INITIAL initially set Edit method

Chapter 3 Program Tools 37

(2) The Main Menu as SG2 under ‘RUN’ Mode.

> LADDER

FUN.BLOCK

FBD

PARAMETER

STOP

DATA REGISTER

WRITE

RTC SET

PASSWORD

LANGUAGE

Press the Button

↑ ↓

Move the Cursor to select Main Menu

OK Confirm the selected Function

ESC Skip to Initial Screen

※SG2 can be modified, edited, cleared and read user program only when it is under STOP Mode.

As the program is modified, ※ SG2 will automatically backup it to FLASH.

◎ Main Menu LADDER

Chapter 3 Program Tools 38

Press the Button

Button Description

SEL

1. Ixx ⇒ ixx ⇒ ── ⇒ space ⇒ Ixx (only for digital and character position of 1, 3, 5 column.)

2. Qxx ⇒ space ⇒ Qxx (only for digital and character position of 8 column.).

3. ┬ ⇒ Space⇒ ┬ (all available but the 2,4,6 column of the first line)
┴ ┴

SEL,
then ↑/ ↓

1. I ⇔ X ⇔ Z ⇔Q ⇔ Y⇔ M ⇔ N ⇔ D ⇔ T ⇔ C ⇔ R ⇔ G ⇔ I (When the cursor located at 1,

3, 5 Column).

2. Q ⇔ Y ⇔ M ⇔ N ⇔ T ⇔ C ⇔ R ⇔ G ⇔H ⇔ L ⇔P ⇔ S ⇔ AS ⇔ MD ⇔ PI ⇔ MX ⇔ AR ⇔
DR ⇔ MU ⇔Q (When the cursor located at 8 Column)

3. ( ⇔ ¿ ⇔ À ⇔ P ⇔ ( (When the cursor located at 7 Column, and the 8 Column is set as Q, Y, M, N)

4. ( ⇔ P ⇔ ( (When the cursor located at 7 Column, and the 8 Column is set as T)

SEL ,
then ←/→

Confirm the input data and move the cursor

↑ ↓ ← →

move the cursor

DEL Delete an instruction

ESC 1. Cancel the Instruction or action under Edition.

2. Back to Main Menu after query the program (save program).

OK 1. Confirm the data and automatically save, the cursor moves to next input position.

2. When the cursor is on Column 8, Press the button to automatically enter the function block and set the

parameters(such as T/C)。

SEL+DEL Delete a Line of Instruction.

SEL+ESC

Display the number of the Lines and operation state of SG2 (RUN/STOP)。

SEL+↑/ ↓

Skip up/ down every 4-line program.

SEL+OK Insert a space line

Operation Sample: more detailed to see appendix A.

◎ FUNCTION BLOCK program input

Into FUNCTION BLOCK, cursor flicker on “T”, press “SEL” key, Ladder function block display in sequence:
T→C→R→G→H→L→P→S→AS→MD→PI→MX→AR→MU→T…

Operation Sample: more detailed to see Appendix B.

Chapter 3 Program Tools 39

◎PARAMETER

Under Ladder mode, press “SEL” key, function block display in sequence:
T→C→R→G→AS→MD→PI→MX→AR→MU→T…

Under FBD mode, Press “SEL” key, Block displays in sequence.

◎ RUN or STOP

(1) RUN Mode (2) STOP Mode

↑ ↓

Move the cursor

OK Execute the instruction, then back to main menu

ESC Back to main menu

◎DATA REGISTER

Displaying preset value when the smart is STOP status and displaying current value when the smart is RUN status.

↑ ↓ ← → Move the cursor

OK Ensure the edit

SEL Enter edit (edit DR display number or DR preset value)

‘SEL’ then ‘SEL’ Edit DR preset value type

‘SEL’ then ‘↑ ↓’ 1. Edit DR display number (only first line)

2. Edit DR preset value

ESC 1. Cancel edit.

2. Back to main menu (save DR preset data)

SEL+↑/ ↓ Tip-up/down page

Chapter 3 Program Tools 40

◎Other Menu Items

(1) CLEAR PROGRAM (Clear RAM, EEPROM and Password at the same time)

(2) WRITE: save the program (RAM) to PM05 (3rd) program spare cartridge

(3) READ: read the program from the PM05 or PM05 (3rd) program spare cartridge to SG2 (RAM)

(1) ∼ (3) Now Press:

↑ ↓

Move the cursor

OK Execute the instruction

ESC Back to main menu

(4) SET (system setting)

content default

ID SET 01

Æ

ID setting (00~99)

REMOTE I/O

N

Æ

Remote I/O Mode

(N: none M: Master S: Slave)

BACK LIGHT

×

Æ

Back light mode
(√: always light ×: light for 10s after pressed.)

M KEEP √

Æ

M: non-Volatile (√:Volatile ×: Non- Volatile)

I/O NUMBER 0

Æ

Setting expansion I/O module number (0~3)

I/O ALARM

√

Æ

Siren setting when is not available to Expansion
I/O Points (√:Yes ×:No)

C KEEP

×

Æ

in stop/run switching, Counter Present Value
Keeping (√:Yes ×:No)

Z SET

×

Æ

Enable or disable keypad input Z01-Z04
(√:enable ×:disable)

V COMM SET 03

Æ

Setting the form and baud rate of RS-485

DATA REG.

U

Æ

Setting the Data Register type

(U: 16bit-unsiged S: 16bit-sign)

※ M KEEP function is available for keeping M status and current value of T0E/T0F when power is re-supplied

after loss.

Chapter 3 Program Tools 41

Now Press:

↑ ↓ ← →

Move the cursor

SEL Begin to edit.
‘SEL’ then ‘←/→’

Move the cursor for ‘ID SET’ item and ‘V COMM SET’ item

‘SEL’ then ‘↑ /↓’

1. ID SET = 00~99 ; I/O NUMBER = 0~3

2. REMOTE I/O = N⇔M⇔S⇔N

3. BACK LIGHT ; C KEEP ; Z SET = ×⇔√

4. M KEEP; I/O ALARM = √⇔×

5. V COMM SET = (0~3)(0~5)

6. DATA REG. = U⇔S

OK Confirm the Edition Data

ESC 1. Cancel the setting when pressed ‘SEL’

2. Back to Main Menu(save edit data)

※ When DATALINK is selected, ID setting range is 0~7, which should be continuous.

ID=0 default as Master, ID=1~7 default as Slave.

※ When REMOTE I/O is selected, the distribution of the remote I/O is as follows:

Master Slave

Remote Input X01~X0C

←

I01~I0C

Remote Output Y01~Y08

→

Q01~Q08

※ The high bit of V COMM SET detects the form of RS-485, and the low bit detects the baud rate of RS-485.

More detailed to see chapter 4: Relay Logic Programming: Data Link/Remote IO Instruction

(5) RTC SET

Now Press

↑ ↓

Enter RTC setting or Summer/Winter setting

SEL Begin to input parameters
‘SEL’ then ‘←/→’

Move the Cursor

‘SEL’ then ‘↑/↓’

1. year=00~99, month=01~12, day=01~31

2. week: MO⇔TU⇔WE⇔TH⇔FR⇔SA⇔SU⇔MO

3. hour = 00~23 , minute = 00~59

‘SEL’ then ‘SEL’ Summer/Winter setting: NO – EUROPE – USA – OTHER – NO …

OK Save the Input Data

ESC

1. Cancel the Input Data when press ‘SEL’.

2. Back to Main Menu.

※ RTC precision

Temperature Error

+25℃ ±3s/day

-20℃/+50℃ ±6s/day

Chapter 3 Program Tools 42

RTC Summer/Winter setting

There are 2 fixed Summer/Winter, EUROPE and USA, 1 edit Summer/Winter in SG2.

Edit rule: ①The last Sunday is defined as 0;
②Hour range: 1~22;
③Summer hour and Winter hour are the same.

Summer/Winter can be set through the two methods as shown below.

1) PC Client

2) Keypad

Then pressing “→” selects edit location, pressing “↑”, “↓” edit content.

Example:

Year 2009, SUM M: 05 D: 01 → 2009-5-3; M: 10 D: 00 → 2009-10-25.

Chapter 3 Program Tools 43

(6) ANALOG SET

A 1=GAIN : 010

Æ

GAIN (0~999), default 10

OFFSET : +00

Æ

OFFSET (-50~+50), default 0

A 2=GAIN : 010

OFFSET : +00

A3~A8…Gain + Offset

Now Press

↑ ↓

1. Move downward the Cursor

2. Switch the setting screen from A01/A02Æ A03/A04Æ A50/A06 Æ
A07/A08

SEL Begin to input parameters
‘SEL’ then ‘←/ →’

Move the Cursor

‘SEL’ then ‘↑/ ↓’

1. GAIN =000~999

2. OFFSET=-50~+50

OK Save the Input Data

ESC

1. Cancel the Input Data when press ‘SEL’.

2. Back to Main Menu (save edit data).

※ V01 = A01*A01_GAIN + A01_OFFSET …… V08 = A08*A08_GAIN + A08_OFFSET

(7) PASSWORD (setting password)

Now Press

SEL

1. Begin to input numeral

2. When the password is ON, it will not display 0000, but ****.

‘SEL’ then ‘←/→’

Move the cursor

‘SEL’ then ‘↑/ ↓’

Data changed 0~F

OK Save the input data, not 0000 or FFFF, as the PASSWORD is ON.

ESC

1. Cancel the Input Data when press ‘SEL’.

2. Back to Main Menu.

※ A Class: Password number is set to 0001~9FFF.

B Class: Password number is set to A000~FFFE.

Password number = 0000 or FFFF is disabled Password function, Default setting: 0000.

Chapter 3 Program Tools 44

A/B Class password Description (√：cannot use under password protected )

Menu A Class B Class
LADDER √ √

FUN.BLOCK √ √
FBD √ √
PARAMETER √
RUN/STOP √

DATA REGISTER √
CLEAR PROG. √ √
WRITE √ √
READ √ √
SET √

RTC SET
ANALOG SET √
LANGUAGE √
INITIAL √ √

(8) LANGUAGE (Selection menu language)

Æ

English

Æ

French

Æ

Spanish

Æ

Italian

Æ

German

Æ

Portuguese

Æ

Simplified Chinese

Now Press

↑ ↓

Vertically move the Cursor

OK Select the language the cursor located

ESC Back to Main Menu

(9) INITIAL (select Ladder Logic and Function Block Diagram (FBD))

Now Press:

↑ ↓

Vertically move the Cursor

OK Select the mode the cursor located

ESC Back to Main Menu

The origin program will be cleared as the change of edition method.

Chapter 4 Relay Ladder Logic Programming 45

Chapter 4: Relay Ladder Logic Programming

Common Memory Types

General

output

SET

output

RESET

output

PULSE

output

N.O.

contact

N.C.

contact

Number

Symbol [

¿ À

P

(N.O./N.C.)

Input
contact

I i 12(I01-I0C/i01-i0C)

Keypad
input

Z z 4(Z01-Z04/z01-z04)

Output coil Q Q Q Q Q q 8(Q01-Q08/q01-q08)

Auxiliary
relay

M M M M M m 63(M01-M3F/m01-m3F)

Auxiliary
relay

N N N N N n 63 (N01-N3F/n01-n3F)

Counter C C c 31(C01-C1F/c01-c1F)

Timer T T T t 31(T01-T1F/t01-t1F)

Inputs (I memory Type)

The SG2 digital input points are designated I memory types. The number of digital I input points is 6, 8 or 12

depending on each SG2 model.

Keypad inputs (Z Memory type)

The SG2 keypad input points are designated Z memory types. The number of digital Z input points is 4 depending on

SG2 H type model and V type model.

Outputs (Q Memory Type)

The SG2 digital output points are designated Q memory types. The number of digital Q output points is 4 or 8

depending on each SG2 model. In this example, output point Q01 will be turned on when input point I01 is activated.

Chapter 4 Relay Ladder Logic Programming 46

Auxiliary Relays (M memory type)

Auxiliary relays ate digital internal memory bits used to control a ladder logic program. The auxiliary relays are not

physical inputs or outputs that can be wired to any external device, switches, sensors, relays, lamps, etc. The number

of Auxiliary Relays M is 63. Since auxiliary relays are internal bits within the CPU, they can be programmed as

digital inputs (contacts) or digital outputs (coils). In the first rung of this example, auxiliary relay M01 is being used

as an output coil and will energize when input I02 turns on. In the second rung auxiliary relay M01 is being used as

an input and when energized, will turn on outputs Q02 and Q03.

※ The state of auxiliary relays “M01~M3F” will be kept when the smart powers down if “M Keep” is active. “M

Keep” can be set by the two ways below.

Special Auxiliary Relays: M31~M3F

Code Signification Description

M31 User program upstart flag Outputting ON during the first scanning period; and used as

normal auxiliary relay at other scan period.

M32 1s blinking output 0.5s ON, 0.5s OFF

M33 Summer/Winter output Summer time turn ON, winter time turn OFF, used as normal

auxiliary relay.

M34 AT01 flag Output ON when the first channel of SG2-4PT is error

M35 AT02 flag Output ON when the second channel of SG2-4PT is error

M36 AT03 flag Output ON when the third channel of SG2-4PT is error

M37 AT04 flag Output ON when the fourth channel of SG2-4PT is error

M38~M3C reserved

M3D Received

M3E Error flag

M3F Time out

MODBUS function using

Chapter 4 Relay Ladder Logic Programming 47

Auxiliary Relays (N memory type)

Auxiliary relays N is the same to auxiliary relays M, but it can’t be kept when the smart powers down.

In the first rung of this example, auxiliary relay N01 is being used as an output coil and will energize when input I03

turns on. In the second rung auxiliary relay N01 is being used as an input and when energized, will turn on outputs

Q04 and Q05.

Timers and Timer Status Bits (T Memory Type)

Timer status bits provide the relationship between the current value and the preset value of a selected timer. The timer

status bit will be on when the current value is equal or greater than the preset value of a selected timer. In this

example, when input I03 turns on, timer T01 will start. When the timer reaches the preset of 5 seconds timer status

contact T01 turns on. When T01 turns on, output Q04 will turn on. Turning off I03 will reset the Timer.

Counters and Counter Status Bits (C Memory Type)

Counter status bits provide the relationship between the current value and the preset value of a selected counter. The

counter status bit will be on when the current value is equal or greater than the preset value of a selected counter. In

this example, each time the input contact I04 transitions from off to on, the counter (C01) increments by one. When

the counter reaches the preset of 2 counts, the counter status contact C01 turns on. When C01 turns on, output Q05

will turn on. When M02 turns on counter C01 will reset. If M09 is turned on, the counter will change from a count-up

to a count-down counter.

Chapter 4 Relay Ladder Logic Programming 48

Specialty Memory Types

General

output

SET

output

RESET

output

PULSE

output

N.O.

contact

N.C.

contact

Number

Symbol [

¿ À

P

(N.O./N.C.)

Lo Hi Used in function block

Expansion input coil X x 12(X01-X0C/x01-x0C)

Expansion output coil Y Y Y Y Y y 12(Y01-Y0C/y01-y0C)

Differential (one shot) D d

RTC R R r 31(R01-R1F/r01-r1F)

Analog comparator G G g 31(G01-G1F/g01-g1F)

HMI H 31(H01-H1F)

PWM P 2(P01-P02)

DATA LINK L 8(L01-L08)

SHIFT S 1(S01)

Positive input Differential Instruction (One-Shot)

A positive input differential instruction, or One-Shot, holds its status ON for one CPU scan when the preceding series

contact transitions from OFF to ON. This transition from OFF to ON is called a Positive Input Differential.

Negative Input Differential Instruction (One-Shot)

A negative input differential instruction, or One-Shot, holds its status ON for one CPU scan when the preceding

series contact transitions from ON to OFF. This transition from ON to OFF is called a Negative Input Differential.

Chapter 4 Relay Ladder Logic Programming 49

Output Instructions

Set Output Instruction (Latch) (¿)

A set output instruction, or Latch, turns ON an output coil (Q) or an auxiliary contact (M) when the preceding input

contact transitions from OFF to ON. Once the output is ON or set, it will remain ON until it is reset using the Reset

output instruction. It is not necessary for the preceding input contact controlling the Set output instruction to remain

ON.

Reset Output Instruction (Unlatch) (À)

A reset output instruction, or Unlatch, turns OFF a previous set output coil (Q) or an auxiliary contact (M) when the

preceding input contact transitions from OFF to ON. Once the output is OFF or reset, it will remain OFF until it if

reset using another output instruction. It is not necessary for the preceding input contact controlling the Reset output

instruction to remain ON.

Chapter 4 Relay Ladder Logic Programming 50

Pulse Output Instruction (Flip-Flop) (

P)

A pulse output instruction, or Flip-Flop, turns ON a coil (Q) or an auxiliary contact (M) when the preceding input

contact transition from OFF to ON. Once the output is ON, it will remain ON until the preceding input contact

transitions from OFF to ON a second time. In the example below, when Pushbutton I03 is pressed and released Motor

Q04 will turn on and remain on. When Pushbutton I03 is pressed again, Motor Q04 will turn off and remain off. The

pulse output instruction (P) will “flip-flop” its state from ON to OFF at each press of Pushbutton I03.

Analog memory type

Analog input Analog output number

Analog input A 8 (A01~A08)

Analog input parameter V 8 (V01~V08)

Temperature input AT 4 (AT01~AT04)

Analog output AQ 4 (AQ01~AQ04)

Add-Subtract control AS AS 31 (AS01~AS1F)

Multiply-Divide control MD MD 31 (MD01~MD1F)

PID contrl PID PID 15 (PI01~PI0F)

Data Multiplexer control MX MX 15 (MX01~MX0F)

Analog Ramp control AR AR 15 (AR01~AR0F)

Data Register DR DR 240 (DR01~DRF0)

MODBUS 15 (MU01~MU0F)

Analog value (A01~A08, V01~V08, AT01~AT04, AQ01~AQ04) and current value of functions (T01~T1F, C01~C1F,

AS01~AS1F, MD01~MD1F, PI01~PI0F, MX01~MX0F, AR01~AR0F, and DR01~DRF0) can be used as other

function’s preset value. And the parameter preset value is its limit value when the current value of those functions is

bigger or less than parameter’s limit value.

Chapter 4 Relay Ladder Logic Programming 51

Timer Instruction

The SG2 includes a total of 31 separate Timers that can be used throughout a

program. T0E and T0F keep their current value after a loss of power to the smart

relay if “M Keep” is active, but the other Timers’ current value is non-retentive. Each

Timer has a choice of 8 operation modes, 1 for a pulse Timer and 7 for general

purpose Timer. Additionally, each Timer has 6 parameters for proper configuration.

The table below describes each configuration parameter and lists each compatible

memory type for configuring Timers.

Symbol Description Compatible Instructions Range

①

Timer Mode (0-7) Input I01-I0C/i01-i0C

Timer Unit 1: 0.01s, range: 0.00 - 99.99 sec Keypad input Z01-Z04/z01-z04

2: 0.1s, range: 0.0 - 999.9 sec Output Q01-Q08/q01-q08

3: 1s, range: 0 - 9999 sec Auxiliary coil M01-M3F/m01-m3F

②

4: 1min, range: 0 - 9999 min Auxiliary coil N01-N3F/n01-n3F

ON: the Timer reset to 0 Expansion input X01-X0C/x01-x0C

③

OFF: the Timer continues timing Expansion output Y01-Y0C/y01-y0C

④

Timer current value RTC R01-R1F/r01-r1F

⑤

Timer preset value Counter C01-C1F/c01-c1F

⑥

Timer code(T01~T1F total: 31 Timers) Timer T01-T1F/t01-t1F

Analog comparator G01-G1F/g01-g1F

Normal close contact Hi

※ The preset value of Timer could be a constant or other function current value.
※ The current value of T0E and T0F will be kept when SG2 on a loss of power if the “M-Keep” is active.

Timer Mode 0 (Internal Coil)

Mode 0 Timer (Internal Coil) used as internal auxiliary coils. No timer preset value. The status of T coil becomes

with enable coil as shown below.

※ I01 is enable coil.

Chapter 4 Relay Ladder Logic Programming 52

Timer Mode 1 (ON-Delay)

Mode 1 Timer (ON-Delay) will time up to a fixed value and stop timing when the current time is equal to the preset

value. Additionally, the Timer current value will reset to zero when Timer is disabled. In the example below, the timer

will stop timing when it reaches the preset value of 5 seconds. Timer status bit T01 will be ON when the current value

is 5.

※ T0E and T0F keep their current value after a loss of power to the smart relay if “M Keep” is active, but the others’

reset to 0.

Chapter 4 Relay Ladder Logic Programming 53

Timer Mode 2 (ON-Delay with Reset)

Mode 2 Timer is an ON-Delay with reset that will time up to a fixed preset value and stop timing when the current

time is equal to the preset value. Additionally, the Timer current value will be kept when Timer is disabled. In the

example below, the Timer will stop timing when it reaches its preset value of 5 seconds. Timer status bit T01 will be

ON when the current value is 5. The timer reset input is input I01. The timer current value will reset to 0, and Timer

status bit T01 will turn off when I01 is ON.

※ T0E and T0F keep their current value after a loss of power to the smart relay if “M Keep” is active, but the others’

reset to 0.

Chapter 4 Relay Ladder Logic Programming 54

Timer Mode 3 (OFF-Delay)

Mode 3 Timer is an OFF-Delay with reset that will time up to a fixed preset value and stop timing when the current

time is equal to the preset value. Additionally, the Timer current value will reset to zero when Timer is disabled. In

the example below, the timer reset input is Input I01.Timer status bit T01 will be ON immediately when its rung is

true. The timer will only begin timing up when its rung changes to false. Timer status bit T01 will turn OFF when the

current time value reaches its preset value of 10 seconds.

※ T0E and T0F keep their current value after a loss of power to the smart relay if “M Keep” is active, but the others’

reset to 0.

Chapter 4 Relay Ladder Logic Programming 55

Timer Mode 4 (OFF-Delay)

Mode 4 Timer is an OFF-Delay with reset that will time up to a fixed preset value and stop timing when the current

time is equal to the preset value. Additionally, the Timer current value will reset to zero when Timer is disabled. In

the example below, the timer reset input is Input I01. The timer status bit T01 will turn ON only after its rung

transitions from true to false. Timer status bit T01 will turn OFF when the current time value reaches its preset value

of 10 seconds.

※ T0E and T0F keep their current value after a loss of power to the smart relay if “M Keep” is active, but the others’

reset to 0.

Chapter 4 Relay Ladder Logic Programming 56

Timer Mode 5 (FLASH without reset)

Mode 5 Timer is a Flash timer without reset that will time up to a fixed preset value and then change the state of its

status bit. Additionally, the Timer current value will reset to zero when Timer is disabled. In the example below, timer

status bit T01 will be ON immediately when its rung is true and begin its timing sequence. Timer status bit T01 will

turn OFF when the current time value reaches its preset of 10 seconds. This Flash sequence of the Timer status bit

T01 will continue as long as its rung remains true.

※ The current value of Timer can not be kept on a loss of power to smart.

Chapter 4 Relay Ladder Logic Programming 57

Timer Mode 6 (FLASH with Reset)

Mode 6 Timer is a Flash timer with reset that will time up to a fixed preset value and then change the state of its

status bit. Additionally, the Timer current value will reset to zero when Timer is disabled. In the example below, the

timer reset input is Input I01. Timer status bit T01will be ON immediately when its rung is true and begin its timing

sequence. Timer status bit T01 will turn OFF when the current time value reaches its preset of 10 seconds. This Flash

sequence of the timer status bit T01 will continue as long as its rung remains true.

※ The current value of Timer can not be kept on a loss of power to smart.

Chapter 4 Relay Ladder Logic Programming 58

Timer Mode 7 (FLASH Cascade without Reset)

Mode 7 Timer is a Flash Timer which using two Timers in a cascade configuration without reset. The second Timer

number follows the first Timer. The cascade configuration connects the timer status bit of first timer to enable the

second timer. The second timer will time up to its preset value then flash and its timer status bit will enable the first

timer. Additionally, the Timer current value will reset to zero when Timer is disabled. In the example below, timer

status T01 will be ON after it completes its timing sequence of 2.5 seconds. Timer 2 will then begin its timing

sequence of 1 second. When the current time value of Timer 2 reaches its preset of 1 second, its status bit T02 will

flash and Timer 1 will begin timing again. This type of cascade timer is of ten used in combination with a counter in

applications where it is necessary to count the number of time cycles completed.

※ The two Timers used in Timer Mode 7 cannot be reused as Timers for other modes in the same program.

※ The current value of Timer can not be kept on a loss of power to smart.

Chapter 4 Relay Ladder Logic Programming 59

Counter Instructions

The SG2 includes a total 31 separate counters that can be used throughout a

program. Each counter has a choice of 9 operation modes, 1 for pulse counter, 6 for

general purpose counting and 2 for high speed counting. Additionally, each counter

has 6 parameters for proper configuration. The tables below describe each

configuration parameter and lists each compatible memory type for configuring

counters.

Common Counter

Symbol description Compatible Instructions Range

①

Counting Mode (0-6) Input I01-I0C/i01-i0C

Use (I01~g1F) to set counting up or down Keypad input Z01-Z04/z01-z04

OFF: counting up (0, 1, 2, 3……) Output Q01-Q08/q01-q08

②

ON: counting down (……3, 2, 1, 0) Auxiliary coil M01-M3F/m01-m3F

Use (I01~g1F) to reset the counting value Auxiliary coil N01-N3F/n01-n3F

ON: the counter value reset to 0 Expansion input X01-X0C/x01-x0C

③

OFF: the counter continues to count Expansion output Y01-Y0C/y01-y0C

④

Counter current Value, range: 0~999999 RTC R01-R1F/r01-r1F

⑤

Counter preset Value, range: 0~999999 Counter C01-C1F/c01-c1F

⑥

Counter Code (C01~C1F total: 31 Counters) Timer T01-T1F/t01-t1F

Analog comparator G01-F1F/g01-g1F

Normal close contact Lo

※ The preset value of Counter could be a constant or other function current value.

The figure below shows the relationship among the numbered block diagram for a Counter, the ladder diagram view,

and the software Edit Contact/Coil dialog box.

Chapter 4 Relay Ladder Logic Programming 60

Counter Mode 0 (Internal coil)

Mode 0 Counter (Internal Coil) used as internal auxiliary coils. No counter preset value. In the example below shows

the relationship among the numbered block diagram for a mode 0 counter, the ladder diagram view, and the software

Edit Contact/Coil dialog box.

Chapter 4 Relay Ladder Logic Programming 61

Counter Mode 1 (Fixed Count, Non-Retentive)

Mode 1 Counter will count up to a fixed preset value and stop counting when the current count is equal to the preset value,

or count down to 0 and stop counting when the current count is equal to 0. Additionally, the current count value is non-retentive

and will reset to init value on a powering up to the smart relay. In the example below, the counter will stop counting when it

reaches the preset value of 20. Counter status bit C01 will be ON when the current value is 20.

※ Under this mode, the counter current value will be init value when the smart is power up or switching between

RUN and STOP. The init value is 0 if the counter configured as counting up, else, it is preset value.

Chapter 4 Relay Ladder Logic Programming 62

Counter Mode 2 (Continuous Count, Non-Retentive)

Mode 2 Counter will count up to a fixed preset value and continue counting after the preset value, but it won’t count when the

current value equals 0 if it’s configured as down Counter. Additionally, the current count value is non-retentive and will reset

to init value on a powering up to the smart relay or switching between RUN and STOP. In the example below, the counter

will continue counting after its preset value of 20. Counter status bit C01 will be ON when the current value is 20.

※ Under this mode, Counter will continue counting after reaching preset value if it’s configured as counter up. But it

stops counting when its current value is 0 if it’s configured as counter down.

※ The counter current value will be init value when the smart’s status switches between RUN and STOP or the smart

is power up. If the counter configured as counting up, the init value is 0, else, it is preset value.

Chapter 4 Relay Ladder Logic Programming 63

Counter Mode 3 (Fixed Count, Retentive)

Mode 3 Counter operation is similar to Mode 1 except its current count value is retentive when Counter powers down. So, the

current value won’t be init value when Counter powers up, but be the value when it powering down. Mode 3 Counter

will count up to a fixed preset value and stop counting at that value, or stop counting when its current value is 0 if it’s configured as

down counter. Additionally, the current count value is retentive when the smart switches between RUN and STOP if “C Keep” is

active. In the example below, the counter will stop counting when it reaches the preset value of 20. Counter status bit C01 will

be ON when the current value is 20.

This mode is similar to mode 1, but:

※ The current counter value will keep on a loss of power when the smart status is RUN;
※ The current counter value will keep when the smart switches between RUN and STOP if C-keep is active.

Chapter 4 Relay Ladder Logic Programming 64

Counter Mode 4 (Continuous Count, Retentive)

Mode 4 Counter operation is similar to Mode 2 except its current count value is retentive. The current count value is

retentive and will keep its current count after a loss of power to the smart relay. Mode 4 Counter will count up to a fixed

preset value and then continue counting after the preset value, but it won’t count when the current value equals 0 if it’s

configured as down Counter. Additionally, the current count value is retentive when the smart switches between RUN and

STOP if “C Keep” is active. In the example below, the counter will continue counting after its preset value of 20. Counter

status bit C01 will be ON when the current value isn’t less than 20.

This mode is similar to mode 2, but:

※ The current counter value will be kept on a loss of power when the smart status is RUN;
※ The current counter value will be kept when the smart switches between RUN and STOP if “C-keep” is active.

Chapter 4 Relay Ladder Logic Programming 65

Counter Mode 5 (Continuous Count, Up-Down Count, Non-Retentive)

Mode 5 Counter’s operation is similar to Mode 2 except its current count value is continuous and non-retentive. The status bit

is fixed to the non-zero preset value regardless of the state of the direction bit. Its status bit will be ON when the counter current

value isn’t less than its preset value, and will be OFF when the current value is less than its preset value.

The Mode 5 Counter will count up to a fixed preset value and continue counting after the preset value. Additionally, the

current count value is non-retentive and will reset to 0 on a loss of power to the smart relay. Additionally, the Mode 5

counter is always reset to zero, and the current value also is always 0 when the smart switches between RUN and STOP

unrelated to the state of its direction bit. In the example below, the counter will continue counting after its preset value of 20.

Counter status bit C01 will be ON when the current value is 20.

※ Under this mode, the count will continuous after reaching its preset value;
※ The current value is always 0 regardless of the state of its direction bit when the reset is availability;
※ The current value is always 0 regardless of the state of its direction bit when the smart switches between RUN and

STOP.

Chapter 4 Relay Ladder Logic Programming 66

Counter Mode 6 (Continuous Count, Up-Down Count, Retentive)

Mode 6 Counter’s operation is similar to Mode 4 except its current count value is continuous and retentive. The status bit is

fixed to the non-zero preset value regardless of the state of the direction bit. Its status bit will be ON when the counter current

value isn’t less than its preset value, and will be OFF when the current value is less than its preset value. Additionally, the

Mode 6 counter is always reset to zero, unrelated to the state of its direction bit. The current count value is retentive and will

keep its current count after a loss of power to the smart relay. And Counter will keep current value if “C Keep” is active.

In the example below, the counter will continue counting after its preset value of 20. Counter status bit C01 will be ON when

the current value isn’t less than 20.

This mode is similar to mode 5, but:

※ The current value is kept on a loss of power down to the smart when it status is RUN;
※ The current value is kept when the smart switches between RUN and STOP if “C Keep” is active.

Chapter 4 Relay Ladder Logic Programming 67

High Speed Counters (DC Version Only)

The DC powered version smart relays include two 1 KHz high speed inputs on terminal I01 and I02. These can be used as

general purpose DC inputs or can be wired to a high speed input device (encoder, etc.) when configured for high speed

counting. They are often used for counting something moving very fast (>40Hz) or used as a speed reference on a machine.

The high speed counters are configured using the same software Edit Contact/Coil dialog box, except selecting Counter

Mode 7 or Mode 8.

High Speed Counter Mode 7 (DC powered versions only)

The Mode 7 High Speed Counter can use either input

terminals I01 or I02 for forward up-counting to 1 KHz

maximum at 24VDC high speed input signal. The

selected Counter Coil (C01-C1F) will turn ON when the

pulse count reaches preset value and remain ON. The

counter will reset when the preceding rung is inactive or

the Reset Input is active. In the example below shows the

relationship among the numbered block diagram for a

Mode 7 Counter, the ladder diagram view, and the

software Edit Contact/Coil dialog box.

Symbol Description

①

Counting Mode (7) high speed counting

②

High speed counting input terminal: I01 or I02 only

Use (I01~g1F) to Reset the counting value

ON: the counter reset to 0

③

OFF: the counter continues to count

④

Current Count Value, range: 0~999999

⑤

Preset Value, range: 0~999999

⑥

Counter Coil Number (C01~C1F total: 31 counters)

Example：

Chapter 4 Relay Ladder Logic Programming 68

High Speed Counter Mode 8 (DC powered versions only)

The Mode 8 High Speed Counter can use either input

terminals I01 or I02 for forward up-counting to 1

KHz maximum at 24VDC high speed input signal.

The selected Counter Coil (C01-C1F) will turn ON

when the pulse count reaches the target “Preset ON”

value and remain ON until the pulse count reaches

the target “Preset OFF” value. The counter will reset

when the preceding rung is inactive. The table below

describes each configuration parameter for High Speed Counter Mode 8.

Symbol Description

①

Counting Mode (8) high speed counting

②

High speed counting input terminal: I01 or I02 only

③

Counting interval time: 0~99.99 sec

④

Counter ‘on’ preset Value, range: 0~999999

⑤

Counter ‘off’ preset Value, range: 0~999999

⑥

Counter Coil Number (C01~C1F total: 31 counters)

Chapter 4 Relay Ladder Logic Programming 69

Real Time Clock (RTC) Instructions

The SG2 smart relay includes a total of 31 separate RTC instructions that can be used

throughout a program. Each RTC instruction has a choice of 5 operation modes, and has 10

parameters for proper configuration. The initial clock/calendar setting for each connected SG2

is set using the Operation»RTC Set menu selection from the SG2 Client software.

Symbol Description

①

Input the first week to RTC

② Input the second week to RTC
③ RTC mode 0~2, 0: internal coil 1:daily, 2:consecutive day

s

④ RTC displays the hour of present time.
⑤ RTC displays the minute of present time
⑥ Set RTC hour ON
⑦ Set RTC Minute ON
⑧ Set RTC Hour OFF
⑨ Set RTC Minute OFF
⑩ RTC Coil Number (R01~R1F Total: 31 RTC)

RTC Mode 0 (Internal Coil)

Mode 0 RTC (Internal Coil) used as internal auxiliary coils. No preset value. In the example below shows the

relationship among the numbered block diagram for a Mode 0 RTC, the ladder diagram view, and the software

Edit Contact/Coil dialog box.

Chapter 4 Relay Ladder Logic Programming 70

RTC Mode 1 (Daily)

The Daily Mode 1 allows the Rxx coil to active based on a fixed time across a defined set of days per week. The

configuration dialog below (example 1) allows for selection of the number of days per week (i.e. Mon-Fri) and

the Day and Time for the Rxx coil to activate ON, and the Day and Time for the Rxx coil to deactivate OFF.

Example 1:

Example 2:

Example 3:

Chapter 4 Relay Ladder Logic Programming 71

Example 4:

Example 5:

Example 6:

RTC Mode 2 (Interval weekly)

The Interval Time Mode 2 allows the Rxx coil to activate based on time and day per week. The configuration

dialog below (example 1) allows for selection of Day and Time for the Rxx coil to activate ON, and Day and

Time for the Rxx coil to deactivate OFF.

Example 1:

Chapter 4 Relay Ladder Logic Programming 72

Example 2:

Example 3:

Example 4:

RTC Mode 3 (Year-Month-Day)

The Year-Month-Day Mode 3 allows the Rxx coil to activate based on Year, Month, and Date. The

configuration dialog below (example 1) allows for selection of Year and Date for the Rxx coil to activate ON,

and Year and Date for the Rxx coil to deactivate OFF.

Symbol Description

①

RTC Year ON

②

RTC Year OFF

③

RTC Mode 3, Year-Month-Day

④

Display RTC present time, Year-Month-Day

⑤

RTC month ON

⑥

RTC day ON

⑦

RTC month OFF

⑧

RTC day OFF

⑨

RTC code (R01~R1F, total 31 group)

Chapter 4 Relay Ladder Logic Programming 73

Example 1:

Example 2:

Example 3:

Chapter 4 Relay Ladder Logic Programming 74

RTC Mode 4 (30-second adjustment)

The 30-second adjustment Mode 4 allows the Rxx coil to activate based on week, hour, minute and second. The

configuration dialog below shows for selection of week, hour, minute and second for the Rxx coil to activate

ON, and 30-second adjustment then Rxx OFF.

Symbol Description

①

RTC adj ust ment week

②

RTC mode 4

③

RTC present hour

④

RTC present minute

⑤

RTC adjustment hour

⑥

RTC adjustment minute

⑦

RTC adjustment second

⑧

RTC code (R01~R1F, total 31 group)

Example 1: preset second < 30s

※ The present time will be 8:00:00 when it achieves 8:00:20 at first time, and RTC status bit R01 will be ON.

RTC status bit R01 will be OFF when the present time achieves 8:00:20 at second time. Then time continuous

going. So, this means that RTC status bit is ON for 21 seconds.

Chapter 4 Relay Ladder Logic Programming 75

Example 2: preset second > 30s

※ The present time will change to be 8:01:00 when it achieves 8:00:40, and RTC status bit R01 turns ON. Then

time is gonging on and R01 turns OFF. This means that the RTC status bit will be ON for one pulse.

Chapter 4 Relay Ladder Logic Programming 76

Comparator Instructions

The SG2 smart relay includes a total of 31 separate comparator instructions that can be used throughout a program.

Each comparator has a choice of 8 operation modes. Additionally, each comparator has 5 parameters for proper

configuration. The table below describes each configuration parameter, and lists each compatible memory type for

configuring Comparators.

Symbol Description

① Comparison Mode (0~7)
② Ax analog input value (0.00~99.99)
③ Ay analog input value (0.00~99.99)
④ Reference comparative value, could be constant, or other data code
⑤ Output terminal (G01~G1F)

※ The preset value ②, ③ and ④ can be a constant or other function current value.

Comparator Mode 0 (Internal Coil)

Mode 0 Comparator (Internal Coil) used as internal auxiliary coils. No preset value. In the example below shows

the relationship among the numbered block diagram for a Mode 0 Comparator, the ladder diagram view, and the

software Edit Contact/Coil dialog box.

Chapter 4 Relay Ladder Logic Programming 77

Analog comparator Mode 1~7

(1) Analog Comparator mode 1:

ONAyAxAy ⑤④④ ,

+

≤

≤−

;

(2) Analog Comparator mode 2: ;

ONAyAx ⑤,≤

(3) Analog Comparator mode 3: ;

ONAyAx ⑤,≥

(4) Analog Comparator mode 4: ;

ONAx ⑤④ ,≥

(5) Analog Comparator mode 5: ;

ONAx ⑤④ ,≤

(6) Analog Comparator mode 6: ;

ONAx ⑤④ ,=

(7) Analog Comparator mode 7: ;

ONAx ⑤④ ,≠

Example 1: Analog Signal Compare

In the example below, Mode 4 is the selected function that compares the value of analog input A01 to a constant

value (N) of 2.50. Status coil G01 turns ON when A01 is not less than constant 2.50.

Chapter 4 Relay Ladder Logic Programming 78

Example 2: Timer/Counter present value Compare

The Comparator instruction can be used to compare Timer, Counter, or other function values to a constant value or each

other. In this example below, Mode 5 is the selected function that compares the value of Counter (C01) with the value

of Timer (T01). Status coil G01 turns ON if present value of C01 isn’t less than present value of T01.

Chapter 4 Relay Ladder Logic Programming 79

HMI Display Instructions

The SG2 smart relay includes a total of 31 HMI instructions

that can be used throughout a program. Each HMI instruction

can be configured to display information on the SG2 16×4

character LCD in text, numeric, or bit format for items such as

current value and preset value for functions, Input/Output bit

status, and text. There are three kinds of text in HMI. They

are Multi Language, Chinese (fixed) and Chinese (edit),

Multi Language is shown in the adjacent example. Each

HMI instruction can be configured separately using the

Edit>>HMI/Text menu selection from the SG2 Client

software. In the adjacent example, HMI instruction H01 is

configured to display the value of T01, and some descriptive

text.

Allows the SEL button on the SG2 keypad to activate the

selected message onto the LCD even the Hxx is inactive.

※ A phone number can be displayed on the screen to alert an operator to call for help. But the phone number

field does not dial a modem or allow for a modem connection.

Each HMI instruction has a choice of 2 operation modes. The table below describes each configuration

parameter.

Symbol Description

① Display mode (1-2)
② HMI character output terminal (H01~H1F)

Chapter 4 Relay Ladder Logic Programming 80

The Chinese (fixed) and Chinese (edit) are shown below. The total number of Chinese (edit) is 60.

HMI function instruction

1. HMI can display character, built-in Chinese, user-defined Chinese and GSM telephone number. This

information can not be edited through keypad.

2. HMI can display function current value (T, C, R, G and DR, classifying units and un-units). This

information can not be edited through keypad.

3. HMI can display preset value of function (T, C, R, G and DR). This information can be edited through

keypad.

4. HMI display state of coil (I, X, Z, M and N (only FBD)), state of M and N can be edited through keypad.

HMI status

1. HMI scanning state, press SEL into at IO interface

2. HMI running state, HMI is enabled at IO interface

Chapter 4 Relay Ladder Logic Programming 81

3. HMI edit preparing state, press SEL when HMI is scanning or running state, flicker cursor will show if

there is edited content.

4. HMI editing state, press SEL again under status 3

Keypad instruction

ESC Abrogate operation

Into status 3 if there is edited content at status 1 or 2

Into status 4

SEL

Change preset type under status 4

↑ ↓

Under status 4, change data and number, function preset data; change coil state

Not in status 4, move cursor up and down

Under status 2, find the nearest enabled HMI

(SEL+↑ ↓)

Under status 1, find the nearest HMI whose mode is 1

← →

Move cursor lift and right

OK Validate editing and store automatic

Chapter 4 Relay Ladder Logic Programming 82

PWM Output Instruction (DC Transistor Output Models Only)

The transistor output model smart relay includes the capability to provide a PWM (Pulse Width Modulation) output

on terminal Q01 and Q02. The PWM instruction is able to output up to an 8-stage PWM waveform. It also provides a

PLSY (Pulse output) output on terminal Q01, whose pulse number and frequency can be changed. The table below

describes number and mode of PWM.

Mode Output

P01 PWM, PLSY Q01

P02 PWM Q02

PWM mode

P01 and P02 both can work under this mode. Each PWM has 8 group preset stages which contents Width and

Period. The 8 group preset values can be constant or other function current value. Each PWM has 10 parameters

for proper configuration. The table below describes each configuration parameter, and lists each compatible memory

type for configuring PWM.

Symbol Description Enable Select3 Select2 Select1 stage PWM Output

① PWM mode (1) OFF X X X 0 OFF
② present stages as operating (0~8) ON OFF OFF OFF 1 Preset stage 1
③ Select1 (I01~g1F) ON OFF OFF ON 2 Preset stage 2
④ Select2 (I01~g1F) ON OFF ON OFF 3 Preset stage 3
⑤ Select3 (I01~g1F) ON OFF ON ON 4 Preset stage 4
⑥ Current number of pulse (0~32767) ON ON OFF OFF 5 Preset stage 5
⑦ Period of preset stage (1~32767 ms)② ON ON OFF ON 6 Preset stage 6
⑧ Width of preset stage (0~32767 ms)② ON ON ON OFF 7 Preset stage 7
⑨ Output port (Q01~Q02) ON ON ON ON 8 Preset stage 8
⑩ PWM code (P01~P02)

Example:

Chapter 4 Relay Ladder Logic Programming 83

The state of M01, M02 and M03 are 010, so PWM output pulse is like this as setting above:

The state of M01, M02 and M03 decide PWM output. PWM stages can be changed by the status of M01, M02
and M03 when P01 is running. ⑥ displays the number of pulse when P01 is running, but ⑥ equals 0 when P01

is disabled.

PLSY mode

Only P01 can work under this mode, and the output is Q01. PLSY has 6 parameters for proper configuration.

The table below describes the information of PLSY parameters.

Symbol Description

①

PLSY mode (2)

②

Total number of pulse (storing in DRC9)

③

Preset frequency of PLSY (1~1000Hz)

④

Preset pulse number of PLSY(0~32767)

⑤

Output port (Q01)

⑥

PWM code (P01)

The preset frequency and pulse number could be constant or other function current value. They are variable if

the preset are other data code. The PLSY will stop output if it has outputted the number of ④ pulse. PLSY will

run again if it is enabled for a second time.

Example:

Parameter setting: ③ = 500Hz，④ = 5, output as shown below:

PLSY stops outputting when the number of output pulse is completed.

Chapter 4 Relay Ladder Logic Programming 84

In the example below, the frequency is other data code (C01). So the wave’s frequency will change following

the current value of C01.

※ In the example above, frequency is 1000 if the current value of C01 is bigger than 1000.
※ PLSY stops outputting pulse after it has output 100 pulses.
※ PLSY will be going on as long as it’s enabled if ④ is 0.

Chapter 4 Relay Ladder Logic Programming 85

Data Link/Remote I/O Instruction (SG2-20Vxxx model only)

The SG2-20Vxxx models include the capability to link additional SG2-20Vxx units

via the RS-485 connection terminals. The baud rate and communication format

both can be set using the Operation»Module System Set menu selection from the

SG2 Client software. They also can be set through keypad like adjacent picture.

The two bits of keypad how to decide the communication format and baud

rate like describing below.

Data Meaning

0 8/N/2 Data 8bit, No Parity, 2 Stop bit.
1 8/E/1 Data 8bit, Even Parity, 1 Stop bit.
2 8/O/1 Data 8bit, Odd Parity, 1 Stop bit.

High bit

3 8/N/1 Data 8bit, No Parity, 1 Stop bit.
0 4800bps
1 9600bps
2 19200bps
3 38400bps
4 57600bps

Low bit

5 115200bps

Data Link

Up to 8 additional SG2 units can be configured as independent Slave nodes, each running their own logic program and

their I/O linked to one Master smart relay. The Master smart relay’s ID must be 00, and Slave nodes’ ID should

start with 01 and be continuous. If nodes’ ID isn’t continuous, the Master won’t communication with those

nodes which are behind the first broken. For example, the nodes’ ID is 01, 02, 04 and 05. The Master thinks

there are only two Slave nodes whose ID is 01 and 02, and communication with them.

ID Memory list

location

0 W01~W08

1 W09~W16

2 W17~W24

3 W25~W32

4 W33~W40

5 W41~W48

6 W49~W56

7 W57~W64

The Mode 1 Send memory range is determined by the Controller ID. Each controller ID is allocated a range of 8 I/O

points (Wxx - Wxx) that can be read into the Master smart relay using a Data Link instruction. The adjacent table

show the memory range of Wxx locations associated with each controller ID.

Chapter 4 Relay Ladder Logic Programming 86

Symbol Description Type of points Range

①

Setting mode(1,2) 1:sending 2:receiving Inputs I01~I0C/i01~i0C

②

Number of send/receive points (1~8) Outputs Q01~Q08/q01~q08

③

Type of send/receive points Auxiliary coil M01~M3F/m01~m3F

④

Send/Receive W Table list location Expansion inputs X01~X0C/x01~x0C

⑤

I/O link output terminal (L01~L08) Expansion outputs Y01~Y0C/y01~y0C

※ Only one Data Link instruction can work at Mode 1, and the other Data Link instructions must be Mode 2.

Example 1: Data Link Mode 1

Set ① = 1, ② = 5, set ③ as the initiate of I03, the state of actual sending terminal I03~I07 is sent to memory list; the

controller ID = 1, the state of corresponding memory list position W09~W13, and relationship of sending terminal is

as below:

①=1, ② = 5, ③ = I03~I07, ID=1 (④:W09~W13)

Memory List Position WW09 W10 W11 W12 W13 W14 W15 16

Corresponding receiving

0

0

Or sending terminal

I03 I04 I05 I06 I07 0

Example 2: Data Link Mode 2

Set ① = 2, ② = 5, set ③ as start from M03, set ④ as from W17, when enabling the Data Link, the state

“ON/OFF” of M03~M07 is controlled by the state of memory list position W17~W21.

①=1, ② = 5, ③ = M03~M07, ④:W17~W21

Memory List Position W17 W18 W19 W20 W21

Corresponding receiving

Or sending terminal M03

M04 M05 M06 M07

Chapter 4 Relay Ladder Logic Programming 87

Remote I/O

Up to 2 additional SG2 units can be configured as Remote I/O nodes, and linked to one master smart relay.

Don’t use expansion DI/DO modules, when remote I/O function is enabled.

Set to master

Remote I/O disable

Set to slaver

Set to master
User program valid
X = slave input
Y = slave out

p

ut

Set to slave
User program not valid
Input = X coil of master
Output = Y coil of master

Chapter 4 Relay Ladder Logic Programming 88

SHIFT (shift output)

The SG2 smart relay includes only one SHIFT instruction that can be used throughout a program. This function

output a serial of pulse on selection points depending on SHIFT input pulse. It has 4 parameters for proper

configuration. The table below describes each configuration parameter, and lists each compatible memory type for

configuring SHIFT.

Symbol Description

①

Preset number of output pulse (1~8)

②

SHIFT input coil (I01~g1F)

③

SHIFT output coils (Q, Y, M, N)

④

SHIFT code (S01)

In the example below, ① = 5, ② = I01, ③: Q03~Q07.

※ Q03 is ON, and from Q04 TO Q07 are OFF when ENABLE is active. Q04 turns ON when I01’s rising edge

coming on, and others points turn OFF. The next coil turns ON at each rising edge of SHIFT input, and others

turn OFF.

Chapter 4 Relay Ladder Logic Programming 89

AQ (Analog Output)

The default output mode of AQ is 0-10V voltage, the corresponding value of AQ is 0~1000. It also can be set as

0-20mA current, the corresponding value of AQ is 0~500. The output mode of AQ is set by the current value of

DRD0~DRD3 as shown below.

Number Signification Mode DRD0~DRD3 data definition

DRD0 Setting the output of AQ01 1 0: voltage mode, AQ output value is 0 under STOP mode

DRD1 Setting the output of AQ02 2 1: current mode, AQ output value is 0 under STOP mode

DRD2 Setting the output of AQ03 3 2: voltage mode, AQ keeps output value under STOP mode

DRD3 Setting the output of AQ04 4 3: current mode, AQ keeps output value under STOP mode

※ It will be thought as 0 if the value of DR isn’t in the range of 0~3. That means the output mode of AQ is

mode 1. AQ displays preset value (constant of code of other data) under STOP mode, displays current value

under RUN mode. AQ preset value can be a constant or other function current value.

AQ display

AQ displays the preset value under STOP mode, and displays the current value under RUN mode.

2 number of expansion analog output 2AO，AQ01～AQ04

A Q 0 1 = 0 1 . 2 3 V

0～10VDC voltage mode (AQ value: 0～1000), depending on DRD0

A Q 0 2 = 0 8 . 9 2 m

A

0～20mA current mode (AQ value: 0～500), depending on DRD1

A Q 0 3 = A 0 1 V
A Q 0 4 = D R 3 F m A

The value will be judged if it’s over-flow when writing AQ preset value or current value through PC

communication. So, output mode information should have been written before preset value.

AQ is current mode:

mAvaluedisplayAQvaluecurrentAQ 00.20:__500:__

=

AQ current value is different from display value, and current value is used in operation and storage. AQ

display is shown below.

Chapter 4 Relay Ladder Logic Programming 90

AS (Add-Subtract)

The SG2 smart relay includes a total of 31AS instructions that can be used throughout a program. The ADD-SUB

Addition and/or Subtraction function enables simple operations to be carried out on integers. There are 6

parameters for proper configuration. The table below describes each configuration parameter, and lists each

compatible memory type for configuring AS.

Symbol Description

①

AS current value ( -32768~32767)

②

V1 parameter ( -32768~32767)

③

V2 parameter ( -32768~32767)

④

V3 parameter ( -32768~32767)

⑤

Error output coil (M, N, NOP)

⑥

AS code (AS01~AS1F)

Compute formula:

321 VVVAS

−+=

AS current value is the result of compute. Parameters V1, V2, and V3 can be a constant or other function

current value. The output coil will be set to 1 when the result is overflow. And the current value is no meaning

at this time. But it will do nothing if the output coil is NOP. The output coil will turns OFF when the result is

right or the function is disabled.

The example below shows how to configure AS function.

※ Error output coil N01 will turn ON when the compute result is overflow.

Chapter 4 Relay Ladder Logic Programming 91

MD (MUL-DIV)

The SG2 smart relay includes a total of 31MD instructions that can be used throughout a program. The MUL-DIV

Multiplication and Division function enables simple operations to be carried out on integers. There are 6

parameters for proper configuration. The table below describes each configuration parameter, and lists each

compatible memory type for configuring MD.

Symbol Description

①

MD current value ( -32768~32767)

②

V1 parameter ( -32768~32767)

③

V2 parameter ( -32768~32767)

④

V3 parameter ( -32768~32767)

⑤

Error output coil (M, N, NOP)

⑥

MD code (MD01~MD1F)

Compute formula:

3/2*1 VVVMD

=

MD current value is the result of compute. Parameters V1, V2, and V3 can be a constant or other function

current value. The output coil will be set to 1 when the result is overflow. And the current value is no meaning

at this time. But it will do nothing if the output coil is NOP. The output coil will turns OFF when the result is

right or the function is disabled.

The example below shows how to configure MD function.

※ Error output coil M01 will turn ON when the compute result is overflow.

Chapter 4 Relay Ladder Logic Programming 92

PID (Proportion- Integral- Differential)

The SG2 smart relay includes a total of 15 PID instructions that can be used throughout a program. The PID function

enables simple operations to be carried out on integers. There are 9 parameters for proper configuration. The

table below describes each configuration parameter, and lists each compatible memory type for configuring PID.

Symbol Description

①

PI: PID current value (-32768~32767)

②

SV: target value (-32768~32767)

③

PV: measure value (-32768~32767)

④

TS: sampling time (1~32767 * 0.01s)

⑤

KP: Proportion (1~32767 %)

⑥

T

I

: Integral time (1~32767 * 0.1s)

⑦

TD: Differential time (1~32767 * 0.01s)

⑧

Error output coil (M, N, NOP)

⑨

PID code (PI01~PI0F)

The parameters from ① to ⑦ can be constant or other function current value. The error coil will turn ON

when either T

S

or KP is 0. But it will do nothing if the output coil is NOP. The output coil will turns OFF when

the result is right or the function is disabled.

PID computes formula:

()

()

∑

∆=

−−=

⎭

⎬

⎫

⎩

⎨

⎧

++−=∆

−=

−−

−

PIPI

PVPVPV

T

T

D

DEV

T

T

EVEVKPI

PVSVEV

nnn

S

D

n

nn

I

s

nnP

nn

21

1

2

The example below shows how to configure PID function.

Chapter 4 Relay Ladder Logic Programming 93

MX (Multiplexer)

The SG2 smart relay includes a total of 15 MX instructions that can be used throughout a program. This special

function transmits 0 or one of 4 preset values to MX current value memory. The MX function enables simple

operations to be carried out on integers. There are 7 parameters for proper configuration. The table below

describes each configuration parameter, and lists each compatible memory type for configuring MX.

symbol description

①

V1 parameter ( -32768~32767)

②

V2 parameter ( -32768~32767)

③

V3 parameter ( -32768~32767)

④

V4 parameter ( -32768~32767)

⑤

Selection bit 1: S1

⑥

Selection bit 2: S2

⑦

MX code (MX01~MX0F)

The parameters from ① to ④ can be constant or other function current value. The table below describes the

relationship between parameter and MX current value.

disable MX = 0;

enable

S1＝0,S2＝0: MX = V1;
S1＝0,S2＝1: MX = V2;
S1＝1,S2＝0: MX = V3;
S1＝1,S2＝1: MX = V4;

The example below shows how to configure MX function.

Chapter 4 Relay Ladder Logic Programming 94

AR (Analog-Ramp)

The SG2 smart relay includes a total of 15 AR instructions that can be used throughout a program. The AR function

enables simple operations to be carried out on integers. Analog Ramp instruction allows AR current level to be

changed by step from starting level to target level at a specified rate. There are 12 parameters for proper

configuration. The table below describes each configuration parameter, and lists each compatible memory type for

configuring AR.

symbol Description

①

AR current value: 0~32767

②

Level1:-10000~20000

③

Level2:-10000~20000

④

MaxL (max level):-10000~20000

⑤

start/stop level (StSp): 0~20000

⑥

stepping rate (rate): 1~10000

⑦

Proportion (A): 0~10.00

⑧

Excursion (B): -10000~10000

⑨

Level selection coil (Sel)

⑩

Stop selection coil (St)

⑾

Error output coil (M, N, NOP)

⑿

AR code (AR01~AR0F)

ABlevelcurrentARvaluecurrentAR /)__(__

−

=

The parameters from ② to ⑧ can be constant or other function current value. The table below describes

detail information of each parameter of AR.

Sel Selection level Sel = 0: target level = Level1

Sel = 1: target level = Level2

※ MaxL is used as target level if the selected level is bigger than MaxL.

St Selection stop coil. The St’s state becomes from 0 to 1 will startup the current level decrease to start/stop

level (StSp + excursion “B”), and then keep this level for 100ms. Then AR current level is set to B

which will make AR current value equals 0.

Output coil The output coil turns ON when A is 0.

※ The output coil can be M, N or NOP. The output coil is set when the wrong thing happens, but it will do

nothing if the output coil is NOP. And the current value is no meaning at this time.

AR will keep the current level at “StSp + Offset "B"” for 100ms when it’s enabled. Then the current level runs

from StSp + Offset "B" to target level at enactment Rate. If St is set, the current level decreases from current level

to level StSp + B at enactment Rate. Then AR holds the level StSp + Offset "B" for 100ms. After 100ms, AR

current level is set to offset "B", which makes AR current value equals 0.

Chapter 4 Relay Ladder Logic Programming 95

Timing diagram for AR

The example below shows how to configure AR function.

Chapter 4 Relay Ladder Logic Programming 96

DR (Data register)

The SG2 smart relay includes a total of 240 DR instructions that can be used throughout a program. The DR function is

transferring data. DR is a temp register. DR sends data from prevention registers to current register when it’s enabled.

The data can be sign or unsigned by setting DR_SET bit through operation>>module system set menu selection from

the SG2 Client software. There are 2 parameters for proper configuration. The table below describes each configuration

parameter, and lists each compatible memory type for configuring DR.

symbol Description

① Preset value: DR_SET = 0, 0~65535

DR_SET = 1,-32768~32767

② DR code (DR01~DRF0)

The parameter ① can be a constant or other function current value.

The example below shows how to configure DR function.

STOP RUN (DR01 = C01 current value)