TECO SG2 Series User Manual

I

T

able of Contents

Chapter 1: Getting Started 1

Examination before Installation 2
Environmental Precautions 2
SG2 Model Identification 3

Quick Start Setup 4
Chapter 2: Installation 10

General Specifications 10
Product Specifications 12
Mounting 13
Wiring 15

Chapter 3: Program Tools 18

PC Programming Software “SG2 Client” 18
Memory Cartridge 26
LCD Display and Keypad 27

Chapter 4: Relay Ladder Logic Programming 44

Common Memory Types 44
Specialty Memory Types 46
Output Instructions 47
Counter Instructions 49
High Speed Counters (DC Version Only) 55
Timer Instructions 57
Real Time Clock (RTC) Instructions 65
Comparator Instructions 70
HMI Display Instructions 72
PWM Output Instruction (DC Transistor Output Models Only) 74
Data Link/Remote I/O Instruction (SG2-20Vxx Models Only) 75

Chapter 5: Function Block Diagram Programming 77

Coil Block Instruction 77

PWM Function Block 78
SHIFT Function Block 79

Logic Block Instructions 80

AND Logic Block 80
AND (Edge) Logic Block 80
NAND Logic Block 81
NAND (Edge) Logic Block 81
OR Logic 81

II

NOR Logic 81
XOR Logic 82
SR Logic Block 82
NOT Logic Block 82
Pulse Logic Block 82

Function Block 83

Common Counter Function Block 83
High Speed Counter Function Block 84
Timer Function Block 85
RTC Function Block 86
Analog comparator Function Block 87

Appendix: Application Illustration 89

Chapter 1: Getting Started 1

Chapter 1: Getting Started

The SG2
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.

Precaution for Installation

tiny smart Relay is an electronic device. For safety reasons, please carefully read and

W

ARNING: Personal injury may result from improper operation.

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

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

comply could lead to improper operation, equipment damage or in

or

injury

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

circuits

Always switch off power before you wire, connect, install, or

The wiring for the SG2

components are exposed.
or cabinet to prevent accidental

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

emperature,

t

Precaution f

considerable

and components. Damage to equipment, fire, or

humidity,

or Wiring

damage to property

smart relay is open and exposed. For the open-board models, all electrical

For

this reason, it is recommended the SG2 smart relay be installed in an enclosure

contact or exposure to the electrical circuits

dust, corrosive gas, vibration, etc.

.

considerable damage to property could result.

extreme cases even death, serious bodily

remove any module.

and components.

Improper wiring and installation could lead to death, serious bodily injury or

prop

erty

.

The SG2 smart relay

Make sure the wiring of the SG2 smart relay

national standards

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.

and

should only be installed and wired by properly experienced and certified personnel.

meets all applicable regulations and codes including local and

codes.

considerable damage to

Precaution for Operation

To

insure safety with the application of the SG2 smart relay,

con

ducted.
potential faults in
operation, equipment damage
property.

Only run the SG2 after all

the

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

or in

Chapter 1: Getting Started 2

complete functional and safety testing must be

testing and confirming safe and proper operation is

extreme cases even Death, serious bodily injury or

complete. Any

considerable damage to

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

to c

omply

could lead to improper operation, equipment damage or in

or

injury

case the

considerable damage to property

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

SG2 smart relay

operation must be shut down immediately

.

.

extreme cases even death, serious bodily

Examination before Installation

Every SG2 sm ar t r ela y has been fully tested
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 ord

• Check to see whether any damage occurred to the SG2 during shipment. Do not connect th
power supply if there is any sign of damage.

Contact

if you find any abnormal conditions as mentioned above.

and examined before shipment. Please carry out the

ered.

e SG2 smart relay to the

Environmental Precautions

cuit in

The installation site of the SG2 smart relay i

s 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:

unt the unit vertically

• Mo

• Environment temperature

• A

void placing SG2 close to any heating equipment

• A

void dripping water,

• A

void direct sunlight

• A

void oil, grease, and

• A

void contact with corrosiv

• Prevent foreign dust, flecks, or metal scraps fro

• A

void electric-magnetic inter

• A

void excessive vibration; if vibration cannot be avoided, an anti-rattle

installed to reduce

: 32°F

-

131°F (0°C

condensation, or humid enviro

gas

e gases and liquids

ference (soldering or power machinery)

vibration.

-

55°C)

nment

m contacting the SG2 smart relay

mounting device should be

SG2 Model Identification

Chapter 1: Getting Started 3

SG2 - 20 H R - A

Controller Type

I/O Count:

8 = 8 points (expansion modules)
10 = 10 I/O points
12 = 12 I/O points
20 = 20 I/O points

Form Factor:
H = Encased / LCD & Keypad

V = Encased /LCD, Keypad & RS-485 Communication
K = Encased /Blind (no LCD & Keypad)
C = Bareboard

E = Expansion

Input Power:

D = 24V DC Powered

12D = 12V DC Powered

A = 100~240V AC Powered

24A = 24V AC Powered

Output Type:
R = Relay
T = Transistor

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.

1. Install SG2 Client Software

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

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

NL

AC ..V

+ -

DC ..V

Quick Start Setup 5

3. Connect Programming Cable

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

4. Establish Communication

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

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

Quick Start Setup 6

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

the computer then press the “Link” button.

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

connection as shown below.

5. 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 M1 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 from 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 Q1 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 pro gram. From the Ope ration 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. From the Input Status dialog, click on M1 to activate the contact M1 which will turn

ON the Output Q1, as shown below. The highlighted circuit will show active and
the first Output (Q1) 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 smar t 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 modul es .

Power Supply

Input Power Voltage Range

Power Consumption

Wire Size (all terminals) 26 to 14 AWG

Programming

Programming languages Ladder/Function Block Diagram
Program Memory 200 Lines or 99 Function Blocks
Programming storage media Flash
Execution Speed 10ms/cycle
LCD Display 4 lines x 12 characters

Timers

Maximum Number 15
Timing ranges 0.01s–9999min

Counters

Maximum Number 15
Highest count 999999
Resolution 1

RTC

(Real T
Maximum Number 15
Resolution 1min
Time span available week, year, month, day, hour, min

Compare Instructions (Analog, Timer, or Counter Values)

Maximum Number 15
Compare versus other inputs Analog, Timer, Counter, or Numeric values

Environmental

Enclosure Type IP20
Maximum Vibration 1G according to IEC60068-2-6
Operating Temperature Range 32° to 131°F (0° to 55°C)
Storage Temperature Range -40° to 158° F (-40° to 70°C)
Maximum Humidity 90% (Relative, non-condensing)

Vibration
Weight
Agency Approvals cUL , CE, UL

ime Clock)

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

24VDC: 12-point : 90mA ;

20-point: 150mA ;

12VDC: 12-point: 150mA ;

20-point: 240mA ;
100-240VAC: 90mA ;
24VAC: 290mA ;

0.075mm amplitude, 1.0g acceleration
8-point:190g

10,12-point: 230g (C type: 160g)
20-point: 345g (C type: 250g)

Chapter 2 Installation 11

Discrete Inputs

Current consumption

Input Signal ”OFF” Threshold

Input Signal ”ON” Threshold

Input On delay

Input Off Delay

Transistor device compatibility PNP, 3-wire device only
High Speed Input frequency 1kHz
Standard Input frequency < 40 Hz

Required protection Inverse voltage protection required

Analog Inputs

Resolution

Voltage Range acceptable

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

Relay Outputs

Contact material Ag Alloy
Current rating 8A
HP rating 1/3HP@120V 1/2HP@250V

Maximum Load
Maximum operating time 10ms (normal condition)

Life expectancy (rated load) 100k operations
Minimum load 16.7mA

T

ransistor Outputs

PWM max. output frequency 0.5kHz (1ms on,1ms off)
Standard max. output frequency 100Hz

Voltage specification 10-28.8VDC
Current capacity 1A

Maximum Load
Minimum Load 0.2mA

3.2mA @24VDC
4mA @12VDC

1.3mA @100-240VAC

3.3mA @24VAC

24VDC: < 5VDC;
12VDC: < 2.5VDC
100-240VAC : < 40VAC
24VAC: <6VAC
24VDC: > 15VDC;
12VDC: > 7.5VDC
100-240VAC : > 79VAC
24VAC: >14VAC

24, 12VDC: 5ms
240VAC: 25ms; 120VAC: 50ms
24VAC: 5ms
24, 12VDC: 3ms
240VAC: 90ms; 120VAC: 50ms
24VAC: 3ms

Basic unit: 10 bit

Expansion unit: 12bit

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

24VDC when used as discrete input;

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

0-20mA current

Basic unit: A1-A4

Expansion unit: A5-A8

Resistive: 8A /point
Inductive: 4A /point

Resistive: 0.5A/point
Inductive: 0.3A/point

Product Specifications

Chapter 2 Installation 12

Display &

Keypad

□, Z1-Z4
□, Z1-Z4
□, Z1-Z4
□, Z1-Z4
□, Z1-Z4
□, Z1-Z4
□, Z1-Z4
□, Z1-Z4
□, Z1-Z4
□, Z1-Z4
□, Z1-Z4
□, Z1-Z4
□, Z1-Z4

RS-485 Communications Max I/O

N/A
N/A
N/A

N/A
Built-in MODBUS
Built-in MODBUS

N/A

N/A
Built-in MODBUS

N/A

N/A

N/A

N/A

Part #

Input Power

SG2-12HR-D
SG2-12HT-D 6 DC, 2 Analog 4 Trans.
SG2-20HR-D
SG2-20HT-D 8 DC, 4 Analog 8 Trans.
SG2-20VR-D
SG2-20VT-D
SG2-12HR-12D
SG2-20HR
SG2-20VR
SG2-10HR-A
SG2-20HR-A
SG2-12HR-24A
SG2-20HR-24A
Expansion Modules
SG2-8ER-D
SG2-8ET-D
SG2-8ER-A
SG2-8ER-24A
SG2-4AI
SG2-MBUS
SG2-DNET
SG2-PBUS
EN01
OEM “Blind” Models, No Keypad, No Display
SG2-12KR-D
SG2-12KT-D
SG2-20KR-D
SG2-20KT-D
SG2-12KR-12D
SG2-10KR-A
SG2-20KR-A
OEM “Bareboard” Models, No Keypad, No Display, No
SG2-12CR-D
SG2-12CT-D
SG2-20CR-D
SG2-20CT-D
SG2-10CR-A
SG2-20CR-A
Accessories
SG2-PL01
SG2-PM05

6 DC, 2 Analog 4 Relay

8 DC, 4 Analog 8 Relay

24 VDC

8 DC, 4 Analog 8 Relay

6 DC, 2 Analog 4 Relay

-12D

-12D

4 Analog N/A N/A N/A N/A

Communications Module, RS-485 ModBus RTU slaver

SG2 Programming Cable, SG2 Programming software

SG2 Memory cart ridge

12 VDC

6 AC 4 Relay

100-240 VA C

8 AC 4 Relay

24VDC

4 DC 4 Relay N/A N/A N/A

24VDC

100-240VAC 4 AC 4 Relay N/A N/A N/A

24VAC 4 AC 4 Relay N/A N/A N/A

24 VDC

6 DC, 2 Analog 4 Relay X N/A 36

24VDC

8 DC, 4 Analog 8 Relay X N/A 44

12VDC 6 DC, 2 Analog 4 Rel ay X N/A 36

6 AC 4 Rel ay X N/A 34

100-240VAC

6 DC, 2 Analog 4 Relay X N/A 12

24VDC

8 DC, 4 Analog 8 Relay X N/A 20

6 AC 4 Relay X N/A 10

100-240VAC

Inputs

8 DC, 4 Analog 8 Trans.

8 DC, 4 Analog 8 Relay
8 DC, 4 Analog 8 Relay

12 AC 8 Relay

12 AC 8 Relay

4 DC 4 Trans. N/A N/A N/A

Communications Module, DeviceNet Group2 slaver
Communications Module, Profibus-DP slaver
Communications Module, TCP/IP

6 DC, 2 Analog 4 Trans. X N/A 36

8 DC, 4 Analog 8 Trans. X N/A 44

12 AC 8 Relay X N/A 44

6 DC, 2 Analog 4 Trans. X N/A 12

8 DC, 4 Analog 8 Trans. X N/A 20

12 AC 8 Relay X N/A 20

Outputs

Expansion

*1: If module with keypad and display, Max IO can be added keypad input Z1-Z4.

36 + 4
36 + 4
44 + 4
44 + 4
44 + 4
44 + 4
36 + 4
44 + 4
44 + 4
34 + 4
44 + 4
36 + 4
44 + 4

*1
*1
*1
*1
*1
*1
*1
*1
*1
*1
*1
*1
*1

Chapter 2 Installation 13

Mounting

DIN-rail Mounting

The SG2 sma rt re la y should always be mounted vertically. Press the slots on the back of the SG 2
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-BUTT ON sim ultaneously)

-

+

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

SG2-12HR-D

Output 4 x Relay / 8A

Q1 Q2 Q3 Q4

I1 I2I4I3

I5

A1I6 A2

Input

×AC

4

N

L

SG2-8ER-A

Output 4 x Relay / 8A

Y1 Y2

Y3 Y4

X4X1 X2 X3

AC 100~240V

Run

Chapter 2 Installation 14

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

-

+

I1 I3I2 I4

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

SG2-12HR-D

Output 4 x Relay / 8A

Q2

A2I6I5 A1

Input
4

×AC

SG2-8ER-A

Output 4 x Relay / 8A

Q3Q1

Q4

L

N

AC 100~240V

Y1 Y2

X2X1 X3

Run

X4

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.

-

+

I1 A2I3I2 I4 I6I5 A1

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

SG2-12HR-D

Output 4 x Relay / 8A

Q2

Q1

Q3 Q4

X1

Input
4

×AC

LN

SG2-8ER-A

Output 4 x Relay / 8A

Y1 Y2

Y3 Y4

X3X2 X4

AC 100~240V

Run

Wiring

W

ARNING: The I/O signal cables should not be routed parallel to the power cable, or

trays to avoid

To

avoid a short cir

and loads.

Wire size and Terminal T orque

mm

AWG

Input 12/24V DC

the signal interference.

cuit on the load side, it is recommended to connect a fuse between each output terminals

2

0.14...1.5

3.5
(0.14in)

C

Nm

lb-in

Chapter 2 Installation 15

in

the same cable

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

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

C

0.6

5.4

Sensor Connection

-

+

-

+ I5I3 I4I2I1

DC V Input

-

+ A1I6

DC V Input

A1I6 A2

A2A1

-

+

DC V INPUT

I7I1+- I4 I5 I6I3I2 A4A2 A3A1I8

A3

A1

A4A2

I4

I5

I3I2I1

A4

A2 A3A2 A1

Chapter 2 Installation 16

PE PE PE

Input 100~240V /24V AC

I1 V1

DC 24v

-

+

RUN

SG2-4AI

Input 4 x (0..10V/0..20mA)

C2V2I2

I4

C3I3 V3

PE

PE

C1

DC 24v

-

+

SG2-4AI

Input 4 x (0..10V/0..20mA)

PE

V4

C4

I2 V2 C2

V3I3 C3

V1I1 C1

RUN

I4

PE

PE

PE

V4

C4

PEPEPE

Output (Relay)

NL

AC ..V Input ......

Output 4 x Relay / 8A

Q1 Q4Q3Q2

I2I1 I4I3 I5 I6

AC ..V INPUT ......

Output 8 x Relay / 8A

I4I1 I3I2NL I7 IBI9I8 IA

I5 I6

IC

Q6Q2 Q3Q1 Q4 Q5 Q8Q7

Output (T ransistor)

Chapter 2 Installation 17

OUTPUT 4 x TR / 0.5A

-

+

-

+

-

+

-

+

Q4Q3Q1 Q2

OUTPUT 8 x TR / 0.5A

-

-

+

+

Q1 Q2

-

++

--

+

Data Link OR R e mo t e I / O L i nk

A1 A2

The power supply

A4

and the I/O supply should

S

BA

RS485

A1

A4

A2A3

A3

S

BA

RS485

share the same power source. Only short circuit
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.

--

-

+

++

Q8Q7Q5 Q6Q3 Q4

S

AB

RS485

A4

A3A1 A2

the first

and

Chapter 3 Program Tools 18

Chapter 3: Program T

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 ar
from an

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

5. Real-time communication allows the user to monitor and force
RUN mode.

Installing the Software

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

www.taian-technology.com

SG2 and saved or edited.

ools

chiving and reuse. Programs can also be uploaded directly

loaded to the controller.

I/O on the SG2 smart relay operation during

Connecting the Software

Remove the plastic
figure below. Ins
relay as shown in the figure below. Connect the opposite end of the cable to an RS232C
serial port on the computer.

connector cover from SG2 using a flathead screwdriver as shown in the

ert the plastic connector end of the programming cable into the SG2 smart

Chapter 3 Program Tools 19

Start

R the SG2 Client softw
you ing functions

Screen

un are and the following Start screen will be displayed. From this screen,

can perform the follow

Ne

w Ladder Program

Select File -->New -->New LAD
to enter the development

nvironment for a new Ladder

e
program.

New FBD Program

Select File -->New -->New FBD
to enter the development
environment for a new FBD

unction Block Diagram) (F

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.

Ladder Logic Programming Environment

The L
testing ram select
File-- odel of SG2, and the number of connected expansion
units if

adder Logic Programming Environment includes all the functions for programming and

the SG2 using the Ladder Logic programming language. To begin a new prog

>New--> and select the desired m

applicable, as shown below.

Chapter 3 Program Tools 20

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

2. Main T

controllers, configuration of special functions and viewing preference selections.

oolbar – (From Left to Right)

Icons for a new program, opening a program, saving a program and printing.

Icons for Keypad, Ladder view,

Icons for Monitor,

Simulator, Controller Mode changes (Run, Stop, and Quit), and Read/Write programs

HMI/T

ext editing and Symbol (comments) editing.

to/from the SG2 smart relay.

3. Usage List – List for all memory
addresses are

designated by a “*” symbol below each address.

4. Amount of free programming memory

5. Current Mode – operation mode of the controller, or

6. Ladder T

7. Status Bar –

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

Status of current open project and connected SG2 smart relay.

types and addresses used with the current open program. Used

available.

simulator,

from the connected PC.

Chapter 3 Program Tools 21

elease

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 ing
programming instructions.

Click-&­r

methods of enter

Click­&-drag

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

Coil column

“A” and “L”

Chapter 3 Program Tools 22

Sim

ulation Mode

The

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

need f To activate simulation mode, simply press the red RUN icon.

or downloading to a controller.

The program below is shown in simulation mode, identifying the significant available features.

E

stablish Communication

T ed

he following is the simple procedure for establishing communication between the connect

P

C and the SG2 smart relay.

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

Chapter 3 Program Tools 23

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 it’s

connection as shown below.

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.

Operation menu

The Operation menu, includes several system configuration functions for both online and off
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 de

bugging a program.

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

ading and writing programs to and from a connected smart relay.

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

Analog Set – setup analog input A1-A8 gain and offset (see dialog below right)

Password – Set a password for accessing the current program after upload t art relay

o the sm

Language – Change software 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.

line

Chapter 3 Program Tools 24

Online Monitoring/Editing

The SG
runtim ges (Run/Stop/Quit).

Note: 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
relay

2 Client software allows for online monitoring of the currently running program during

e. Additional online functions include, I/O forcing, and Mode chan

smart

while in Stop mode.

Chapter 3 Program Tools 25

elease

Program

he SG2 Client software includes the ability to document a program using Symbols and Line

T

omments. Symbols are used to label each I/O address up to a length of 12 characters. Line

C

omments are used to document sections of a program. Each Line Comment can have up to 4

C

es with each line containing up to 50 characters in length. Below are examples of entering

lin

ymbols and Line Comments.

S

Documentation

ymbol

S

he Symbol editing environment can be access through the menu using the Edit>Symbol…

T

lection or using the symbol icon on the main toolbar shown below.

se

he Symbol editing environment allows for documenting all the contact and coil memory types,

T

nd selecting display modes as shown below.

a

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.

Click-&­r

Click­&-drag

Mem ately)

ory Cartridge (sold separ

Chapter 3 Program Tools 26

The optional PM05 memory cartridge is used to easily
another. memory car ridge plugs into the sa The PM05 t
(see o

pr cedure below).

1

Re

. move the plastic con ecto cover from SG2 using a flathead screwdriver as show

2

In

. sert the PM

3

Fr

. om the display ke

RE

AD (from PM05)

cartridge.

4, K type C type, electrify the product, the program in

5 am in mpatible, here are the regulations:

, Progr different types are not co
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 pro
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

and PM05 will automatically download and

uted.

exec

05 memoryt

n r n in the figure above.

car ridge onto the connector as shown a

ypad on the face of the SG2 smart relay,

to

transfer the program to or from the smart relay to the PM05 memory

gram ---- available in Transistor type

transfer programs from one smart relay to

me connector as the programming cable

bove.

select either WRITE (to PM05) or

Chapter 3 Program Tools 27

LCD Displa

y and Keypad

Keypad

Mo y and Keypad. The keypad and display are

st SG2 CPU units include the built-in LCD Displa

most us nter set points, controller mode changes (Run/Stop),

often ed for changing timer/cou
uploading/dow ory cartridge, and updating the RTC (Real Time
Clock nda ormed from the keypad and display, it

/Cale r). Although, logic programming can be perf
is high com ing the SG2 Client software. Below is an
overvi f th

ew o e basic keypad and display functions.

Select – Used to select the available m mo uction types for editing. Holding the Select

tton will display all “H” HMI/Text mes ge o the .

bu sa s n LCD

nloading to the PM05 mem

sly re mended to only perform logic changes u

e ry and instr

K – Used to accept the selection displ e of an u ti n r u c n It is also used to select

O ay d instr c o o f n tio .

any of the M D.

ote: Press thN

Escape – Used to exit lay screen and t t e vious s

displa y t e .

D

y screen, press the ESC to displa h main menu

elete – Used to delete an instruction or rung from the ladder program.

The 4 naviga ) are
SG2 display a o ca e e p og a ma

(‘

↑’= Z1, ‘←’=Z2, ‘↓’=Z3, ‘→’ =Z4

CD Display

L

Main Menu

LCD displa nu

ain Menu options on the LC

e “SEL” and “OK” simultane

ously to t rung ve th c rre t act e

inser a

abo

e u n iv cursor position.

a selected disp go o h pre creen. When in a ladder

tion buttons (↑←↓→ used to move h ugh

or active program. The ls n b s t r r m ble input coils Z1-Z4

4 buttons

the cursor t ro out the

functions of the

);

ys 4-line Main Me

( 1 ) The Main Menu as S er T ’ Mo e

LADDER

>

G2 und ‘S OP d .

FUN.BLOCK
RUN
CLEAR PROG.
WRITE
READ

Æ
Æ

Sa u p g a M 5ve ser ro r m to P 0

Æ

Read user Program from PM05

u e pro ra an e password Clear the s r g m d th

SET
RTC SET
ANALOG SET
PASSWORD
LANGUAGE
INITIAL

Æ
Æ

initially set Edit method

t language Select he

Chapter 3 Program Tools 28

( 2 ) The Main Menu as SG2 und R N’ Mode. er ‘ U

LADDER

>

FUN.BLOCK
STOP
WRITE
RTC SET
WRITE
PASSWORD
LANGUAGE

Press the Button

↑ ↓

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 i atically backup it to EEPROM. (Not PM05)

Move the Cursor to select Main Menu

s modified, SG2 will autom

◎ Main Menu LADDER

the Button

Press

n

ript

R ⇔ G ⇔

)

, and the 8 Colum

Button Desc ion

SEL

SEL +↑/ ↓

SEL + /← →

↑/ ↓

←/ →

DEL Delete an instruction

ESC 1. Cancel the Instruction or n n er d io .

OK 1. Confirm the data and autom ic ll v t n t put position.

SEL+DEL Delete a Line of Instruction.

SEL+ESC

SEL+↑/ ↓

SEL+OK Insert a space line

1. Ix ⇒ ix ⇒ ── ⇒ spa

2. Qx space Q

3. ┬ ⇒ Space⇒ ┬
┴ ┴ x Dg l ~

1. 1...F, ─ (When the cursor lo tes the digital s io , the ran of d al is restricted by

2. I ⇔ X ⇔ Z ⇔Q ⇔ Y⇔ M ⇔ D ⇔ T ⇔ C ⇔ I

3. Q ⇔ Y

4. ( ⇔ ¿ ⇔ À ⇔ P

5. ( ⇔ P ⇔ ( (When the cursor located at 7 Column n is set as T)
Confirm the input data and move the cursor
Vertically move the cursor
Horizontally move the cursor

2. Back to Main que t e ro ra .

Display the number of i t o OP) the Lines and operat on sta e f SG2 (RUN/ST 。
Skip up/ down every 4-line program.

⇒ ⇒ x (only for digital and character position of 8 column.).

the relay type.

n the cursor cat 5 o m ).

(Whe

⇔ M ⇔ T ⇔

(When the cursor located at 8 Colum

set as Q, Y, M)

Menu after ry h p g m

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)。

ce ⇒ Ix

l v ila le u th 2 ,6 o m of the first line)

lo ed at 1

C ⇔ R

⇔ ( h ur r o te at 7 o m , and the 8 Column is

o r digital and character position of ,3,5 column.)

( nly fo 1

(a l a a b b t e ,4 c lu n
: i ita: 1 F

ca po it n ge igit

,3, C Glu n

⇔ ⇔H ⇔ L ⇔P ⇔ Q

(W en the c so l ca d C lu n

actio u d E it n

at a y save, the cursor mo es o ex in

Chapter 3 Program Tools 29

peration Sample：

12345678Column
Line 1 > LA DD ER
2FUN.BLOCK
3RUN
4CLEAR PROG.

Procedure 1: n 1 2 3 4 5 6 7 8 Colum
Press ‘OK’ Line 1
2
Enter LADDER Edition 3
4

Procedure 2 : 1 2 3 4 6 8 n 5 7 Colum
Press ‘SEL’ Line 1 I 1

2
(When cursor located at character or 3
digital, press the button to show I1) 4

Procedure 3 : Column 1 2 3 4 5 6 7 8

Q 1

1

Press ‘↑’ 3 times
2

(Press ‘SEL’ + ‘↑ ↓’,
and the digital cursor located will 4
change from I to Q).

Line

3

Procedure 4 : 1 2 3 4 5 6 7 8 Column
Press ‘SEL’ Line 1 q 1

2
(start /end modifying parameter) 3
4

Procedure 5 : 1 2 3 4 5 6 7 8 Column
Press ‘→’
2
(“Press ‘SEL’ + ‘← →’,

the cursor located in digital) 4

Line 1 q

1

3

Procedure 6 : 1 2 3 4 5 6 7 8 Column
Press ‘↑’ for 3 times
2
(“Press ‘SEL’ + ‘↑ ↓’

the digital the cursor located will 4
change from 1 to 4)

Procedure 7
Press ‘ ’
2

(Press ‘SEL’ + ‘← →’
to move the cursor to the position 4
Required revision.

:

←

Line 1 q

Line 1

4

3

q 4

3

olumn 12345678C

Chapter 3 Program Tools 30

OR

Procedure 7 : n 1 2 3 4 5 6 7 8 Colum
Press ‘OK’ Line 1 q 4
2

(Move the cursor to character in 3
column 3) 4

Automatically

Link

⎯

Automatically Link

OR

Procedure 7 : 3 4 5 6 7 8 Column 1 2
Press ‘→’

2
(move the cursor to the link location 3
in column 2) 4

R 7, and input M1, I3 I truction t olum 3, 5.

epeat the step1~ ns o c n
Procedure 8 : 1 2 3 4 5 6 7 8
Press ‘OK’ in Column 5 Line q 4 1
2
(move the cursor to the character in 3
column 8) 4

Line 1 q 4

Column

⎯

M1⎯I3

⎯

⎯

Procedure 9 : 1 2 3 4 5 6 7 8 Column
Press ‘SEL’ Line 1 q 4

2
(when the cursor located at character 3
and digital, press ‘SEL’ to show 4
‘ –( Q1’)

Procedure 10 : 1 2 3 4 5 6 7 8 Column
Press ‘OK’ Line 1 4 1 3q
2

Save the input program data, the 3
position of the cursor will not move. 4

M1⎯I3⎯( Q 1

⎯

Aut d “ -( ”

o Ad

⎯

M

⎯

I

( Q 1

⎯

Procedure 11 : 1 2 3 4 5 6 7 8 Column
Press ‘→’ twice

2
(move the cursor to column 1 3
and Line 2.) 4

Line 1 q 4⎯M1⎯I3⎯(Q1

Procedure 12 : n 1 2 3 4 5 6 7 8 Colum
Press ‘→’ twice

2
(move the cursor to column 2) 3
4
Note: never press ‘SEL’ before hand

Line 1 q 4⎯M1⎯I3⎯(Q1

Chapter 3 Program Tools 31

Change Wire ‘－’ to ‘ I ’

Procedure 13 : Column 1 2 3 4 5 6 7 8
Press ‘SEL’ Line q 4 1
2┴

(A vertical line emerges) 3
4

┬

M1⎯I3⎯(Q1

Procedure 14 : Column 1 2 3 4 5 6 7 8
Press ‘OK’ Line q 4 1
2┴

(Move the cursor to character in 3
column 3.) 4

Repeat the step 1~7 and key in ‘r 3’ , ―” at Line 2 and column ~

rocedure 15 : 4 6 Column

P 1 2 3 5 7 8
Press ‘OK’ in column 5 Line M1⎯I3 Q 1 q 4
2
(move the cursor to the character in 3

Column 8) 4

┬

M1⎯I3⎯(Q1

3 6.

┬
┴

r3

⎯ ⎯ ⎯ ⎯

( 1

⎯

(

Procedure 16 : n 1 2 3 4 5 6 7 8 Colum
Press ‘SEL’ Line 1 q 4
2

(When the cursor located in digital 3
or character, press ‘SEL’, ‘Q1’ will 4
emerges)

┬

M1⎯I3⎯(Q1

┴

r3

⎯ ⎯ ⎯ ⎯

( Q 1

Auto Add “-( ”

Procedure 17 :
Press ‘↑’ for 4 times

2r3
(Press ‘SEL’ + ‘↑ ↓’

(The character Q the cursor locating 4
will change to C.)

Procedure 18 : n 1 2 3 4 5 6 7 8 Colum
Press ‘→’

23
3

4

1 2 3 4 5 6 7 8 Column

Line 1 q 4┬M1⎯I3⎯(Q1

( C 1

3

1q

(C1

Line 1 4 M1

┬
┴

r

⎯┴⎯ ⎯ ⎯

I3 (Q

⎯ ⎯

⎯

⎯ ⎯ ⎯

Chapter 3 Program Tools 32

n

Procedure 19 : 1 6 7 8 Column 2 3 4 5
Press ‘↑’ for 7 times

2
(Press ‘SEL’ + ‘↑ ↓’

The digital 1 the cursor locating will
change to 7)

Line Q1 1 q 4┬M1⎯I3⎯(

┴

r3

⎯ ⎯ ⎯ ⎯

3

4

(C7

Auto Enter Functio
Block Edition

rocedure 20 : 1 3 4 5 6 8

P 2 7 Column
Press ‘OK’ Line 1
2L o
(Auto shift to FUNCTION BLOCK 3
and the counter input parameter) 4 L o

┌

1

┤ │
│

0 00000 C7├

┴ ┘

┐

Procedure 21 : 1 3 4 5 6 8 Column 2 7
Press ‘ESC’ back to Line q 4
LADDER edition screen 2
3

4

1

┬

M1 I3 (Q1

⎯ ⎯

┴

r3

⎯ ⎯ ⎯ ⎯

C( 7

Delete the Program Element

12345678Column
Line 1 q 4 1
2
3

4

┬

M I3 (Q

⎯ ⎯

┴

r3

⎯ ⎯ ⎯ ⎯

1

C( 7

Procedure : 1 2 3 4 5 6 7 8 Column
Press ‘DEL’

3
(to delete the element C7 the cursor 4
locating)

Line 1 q 4 1

2

┬

M I3

⎯ ⎯

┴

r3

⎯ ⎯ ⎯ ⎯

Q1

(

Display the present Line the cursor locating and operation state of SG2.

1 4 5 6 8 Column Procedure : 2 3 7
Press ‘SEL+ESC’ (simultaneously) Line q M1⎯I3
2
(The Line 4 displays where the cursor 3

locating and operation state of SG2) S T P L I N E 0 24 O 0

┬
┴

r3

⎯ ⎯⎯ ⎯

Q1 1 4

(

⎯

(C7

Delete the whole Line

1234568Coln 7 um
Line q 4
2
3

4

1

┬

M1 I3 (Q1

⎯ ⎯

┴

r3

⎯ ⎯ ⎯ ⎯

C( 7

Chapter 3 Program Tools 33

Procedure : 1 3 4 5 6 8 Column 2 7
Press ‘SEL+DEL’ (Simultaneously) Line q 4
2
3C L E A R L n 0 0 2
(‘ESC’ Cancel , ‘OK’ Execute) 4 E S C ? O K ?

1

┬

M1 I3 (Q1

⎯ ⎯

┴

r3

⎯ ⎯ ⎯ ⎯

C7(

Insert a whole line.

12 4568coln 3 7 um
line q M1
2
3

4

Step: 12345678co lumn
Press“SEL+OK” ( at the same time) Line 1 4 1 3 1 q
2
3
4

1 4

┬
┴

┬

┴

r3

M

r3

I3 (Q1

⎯ ⎯
⎯ ⎯⎯ ⎯

I

⎯

⎯ ⎯ ⎯ ⎯

(C7

(Q

⎯

C7(

Turn page ( move upward/ downward 4 lines program）：

1 23 45 678 column

q 4

┬

M1⎯I3

┴

r3

⎯ ⎯ ⎯ ⎯

┬

M1⎯I3

┴

r3 (C7

⎯ ⎯ ⎯ ⎯

Q1(

⎯

(C7

Q1(

⎯

line 1 q 4
2
3
4
5

Step ：
Press ‘SEL+↑ ↓’
（at the same time）

3
4
5

12345678column

line 1

2

◎ FUNCTION BLOCK program i

nput

3 78 um
Line L D D E R 1 A
2> FUN . BLOCK
3RUN
4C A P .LE R ROG

Procedure 1: 1 2 3 4 5 6 7 8 Column
Press ‘OK’ Line 1
21
(Enter FUNCTION BLOCK edition) 3
4

12 456 Coln

Present action area
The present value will appear when SG2 is under ‘RUN’ m de. o

┌

1

┤ │
│

00. 00

┴ ┘

┐

├

T 1

Preset action v r alue a ea

Chapter 3 Program Tools 34

1234568Coln 7 um
Never press ‘→’ to move to the

digital position. 2 1
(If T2 is required to be changed, 0.00 T3
Press ‘↑’/‘↓’ and ‘SEL’ to execute.)

Line 1

4

┌

1

┤ │
│

0

┴ ┘

┐

├

1

Step 2: modify c present target value dpreset the action relay

Preset the targ

Procedure 2- 2 3 7
Press ‘←’

21
(move the cursor to the preset action 00.03
area ) 4

et value

1: 1 4 5 6 8 Column

Line 1 1

┌ ┐
┤ │
│
┴ ┘

0

├

T1

Procedure 2-2: 1 2 3 4 5 6 7 8 Column
Press ‘SEL’ Line 1
21
(begin input the target value) 3

4

Procedure 2-3: 1 2 3 4 5 6 7 8 Column
Press ‘↑’ for 3 times

21
(Press ‘SEL’ and followed by ‘↑,↓’

The digital ‘0’ is changed to ‘3’) 4

Line 1

3

┌

1

┤ │
│

00. 00

┴ ┘

┌

1

┤ │
│

00. 0

┴ ┘

┐

├

T1

┐

├

3

T1

Procedure 2-4: 1 2 3 4 5 6 7 8 Column
Press ‘OK’ Line 1
21
( 3

Save the input data) 00. 03

4

Procedure 2-5: 1 2 3 4 5 6 7 8 Column
Press ‘←’

21
3
4

Line 1

┌

1

┤ │
│
┴ ┘

┌

1

┤ │
│

00. 0 3

┴ ┘

┐

├

T1

┐

├

T1

Repeat Step 2-2 ~ step 2-4 for 3 times, to enter the following screen:

rocedure 2-6: 1 3 4 5 6 8 Column

P 2 7
Line 1
21
3
4

As the present value of the timer, , analog input (A1-A8) and analog gain value (V1-V8) is set

as the preset valu

e of them. Next to the step 2-2, to execute the following operation:

counter

┌

1

┤ │
│

3 3.33 T1├

┴ ┘

┐

Chapter 3 Program Tools 35

Step2-3A: 3 4 5 6 8 column 1 2 7
Press ‘SEL’ line 1
21
31

4

Repeat the step 2-3A, the following screen will be shown in turn:

Step2-3 1 2 7
Press ‘SEL’ line 1
21
3

4

Step 2-3C: 1 6 column 2 3 4 5 7 8
press ‘SEL’ line 1 1
21
3

4

Step 2-3D: 1 6 column 2 3 4 5 7 8
Press ‘SEL’ line 1 1
21
3

4

Next to step 2-3B, then ‘↑’, the following scr

st 2 3 4 5 7 8
Press ‘↑’

21
3

4

Repeat step2-4A (press ‘↓’ is also available)， e t al e f A1-A8 will be periodi ly changed. And
so

set as pr

st
press ‘OK’ line 1
21
Save the present data. 3
4

Procedure 2-7: 3 4 5 6 8 Column 1 2 7
Press ‘↑’

21
33 3 1
4

B: 3 4 5 6 8 column

een will be shown.

ep 2-4A: 1 6 column

1

line 1

the pr se v u

on. ‘Analog*gain + offset’ value (V1-V8) and the o b cks i ount ) present value is

eset value, to repeat the step to selec T , , V1-V8.

ep 2-5A: 1 2 3 4 5 6 7 8 column

t T1- F

Line 1

┌

1

┤ │
│

V

┴ ┘

┌

1

┤ │
│

A1

┴ ┘

┌ ┐
┤ │
│

T1

┴ ┘

┌ ┐
┤ │
│

C1

┴ ┘

┌ ┐
┤ │
│

A2

┴ ┘

funocti

other

C1-CF

┌

1

┤
│

A

┴ ┘

┌

1

┤ │
│

3 .3

┴ ┘

n lo (t me, c er

2

┐

├

T1

┐

├

T1

├

T1

├

T1

├

T1

┐
│
├

T1

┐

├

T

cal

Procedure 2-8: 1 2 3 4 5 6 7 8 Column
Press ‘SEL’ Line 1
21

(begin to edit data) 3 3 3 T1
4

┌

1

┤ │
│

3 .3

┴ ┘

┐

├

Chapter 3 Program Tools 36

Procedure 2-9: 1 2 3 4 5 6 7 8 Column
Press ‘↑’

22
(Press ‘SEL’ + ‘ ↑, ↓’

to change1’ to ‘ 2’) 4

Line 1

3

┌

1

┤ │
│

3 3.

3 3

┴ ┘

┐

├

T1

1 2 3 4 5 6 7 8 Column Procedure 2-10:
Press ‘OK’ Line 1
22
(save the input data) 3
4

┌

1

┤ │
│

3 3

┴ ┘

┐

├

T13 3.

Procedure 2-11: 1 2 3 4 5 6 7 8 Column

┌

Press ‘↑’
22
(move the cursor to ‘1” position) 3
4

Line 1

1

┤ │
│

3 3

┴ ┘

┐

├

T1 3 3 .

Procedure 2-12: 2 3 4 5 6 8 Column 1 7
Press ‘SEL’ Line 1

22
(begin to edit data) 3
4

┌

1

┤ │
│

333. 3

┴ ┘

┐

├

T1

-13: 3 4 5 6 8 Column 2 1 2 7

┌

Press ‘↑’ for 3 times
22

(Press ‘SEL’ and followed by ‘↑ ↓’
to change 1 to 4) 4 L o

Line 1

3

4

┤
│

333. 3

┴ ┘

┐
│

├

T1

Procedure 2-14: 3 4 5 6 8 Column 1 2 7
Press ‘OK’ Line 1
22
(save input data) 3 333.3 T1
4L o

┌

4

┤ │
│ ├
┴ ┘

┐

rocedure 2-15: 3 4 5 6 8 Column P 1 2 7

Press ‘↓’ for 3 times
22
(this step leads to editing the action 3 . T13
relay) 4 L o

Line

┌

4 1

┤ │
│

3 3 3

┴ ┘

┐

├

d Edit action program and preset the action relay

2 3 5 6 Column Procedure 2-16: 1 4 7 8
Press ‘SEL’ Line
22
(Begin to modify ) 3
4L o

┌

4 1

┤ │
│

333. 3

┴ ┘

┐

├

T1

Chapter 3 Program Tools 37

Procedure 2-16A: 1 2 3 4 5 6 8 Column 7
Press ‘SEL’ Line 4 1
22
(Begin to modify ) 3
4I 1

Repeat the step 2-16A, the following scr

Procedure 2-16B:
Press ‘SEL’ Line 1
22
3
4i 1

Procedure 2-16C: 1 3 4 5 6 8 Column 2 7
Press ‘SEL’ Line 1
22
3
4L o

N

ext to step 2-16A, then ‘↑’, the following screen will be shown.

Procedure 2-17: 1 2 3 4 5 6 7 8 Column
Press ‘↑’ for 5 times

22
(Press ‘SEL’ + ‘↑ ↓’
to change I to M ) 4 M 1

een will be shown in turn:

Line 1

3

┌ ┐
┤ │
│

333. 3

┴ ┘

1 2 3 4 5 6 7 8 Column

┌

4

┤ │
│

333. 3

┴ ┘

┌

4

┤ │
│
┴ ┘

┌

4

┤ │
│

3 3

3 .3

┴ ┘

├

T1

┐

├

T1

┐

├

3333.

T1

┐

├

T1

Procedure 2-18: 1 2 3 4 5 6 7 8 Column
Press ‘→’

22
(Press ‘SEL’ + ‘← →’ to move
the cursor to digital location) 4 M 1

Procedure 2-19: 1 2 3 4 5 6 7 8 Column
Press ‘ ’for 3 times ↑

22
(Press ‘SEL’ + ‘↑ ↓’ to change
‘1’ to ‘4’) 4 M 4

Line 1

3

Line 1

3 3 3 1

┌

4

┤ │
│

333. 3

┴ ┘

┌

4

┤ │
│

3 3.

┴ ┘

┐

├

T1

┐

├

T

Procedure 2-20: 3 4 5 6 8 Column 1 2 7
Press ‘OK’ Line 1
22
(save the input data) 3
4M 4

┌

4

┤ │
│

333. 3

┴ ┘

┐

├

T1

Procedure 2-21: 1 5 Column 2 3 4 6 7 8

1

Press ‘↑’
22
(Move the cursor to preset action 3
value area to repeat the step 2-1) 4 M 4

Line

┌

4

┤ │
│

3 33. 3

┴

┐

├

T1

┘

Chapter 3 Program Tools 38

rocedure 2-22: 5 6 8 Column P 1 2 3 4 7

1

Press ‘↑’
22
(Move the cursor to position ‘2’ to 3
repeat the 2-8) 4 M 4

Line 4

┌ ┐
┤ │
│

333. 3

┴ ┘

├

T1

The detail operation of modify the analog comparator x, Ay:

A

ep 2-22A: 4 5 6 column

st 1 2 3 7 8
Press ‘↑’

2A 1
(Move the cursor to 2, or repeat the 3 A 3
next step. Select A1-A8 ) 4

line 1 4

┌ ┐
┤ │
│ ├
┴

0 3 . 3 3

G1

┘

1 2 3 4 5 6 7 8 column Step 2-22B:
Press ‘SEL’ twice line 1
2A 1
(Move the cursor to 2 to repeat the 3 T 1

above step. 4
Select A3-V1-T1 1-A1) -C

┌

4

┤ │
│ ├

┴

0 3 . 3 3

┐

G1

┘

Step 2-22C: 1 2 3 4 5 6 7 8 column
Pres

s ‘↑’

(Move the curso 3 T 2
above step. Select T1~TF, 4

C1~CF,A1~A8,V1~V8)

line 1

┌

4

┤
│ ├

┴

0 3 . 3 3

┐
│

G1 r to 2 to repeat the

┘

2A 1

Step 2-22D: 1 2 3 4 5 6 7 8 column
Press ‘OK’ line 1
2A 4
Save th 3 Te present data F
4

┌

4

┤ │
│

03. 33

┴ ┘

┐

├

G1

Procedure 2-23: 1 2 3 4 5 6 7 8 Column

┌

Press ‘↑’
22
(Move the cursor to position ‘4’ to 3
repeat the step 2-12) 4 M 4

Line 1

4

┤ │
│

333. 3

┴ ┘

┐

├

T1

Continu ut Function Block

Next Function Block
12345678Column
Line 1
22
3
4M 4

e to inp

┌

4

┤ │
│

333. 3

┴ ┘

┐

├

T1

Chapter 3 Program Tools 39

Procedure 1: 1 2 3 4 5 6 7 8 Column
Press ‘SEL+↑’ (Simultaneously)

21
3
4I 2

Line 1

┌

2

┤ │
│

010. 0

┴ ┘

┐

├

T 2

Last Function Block

Line 1
22
3
4M 4

12345678Column

┌

4

┤ │
│
┴ ┘

.

┐

├

333 3 T1

1 2 3 4 5 6 7 8 Column Procedure :

Press ‘SEL+↓’ (Simultaneously)
22
3
4R 1

D B

elete Function lock

Procedure ：
Press ‘SEL+DEL’

22
3C L E A R B L O C K
(‘ESC’: Cancel O K ? ; 4 E S C ?

‘OK’: Execute)

v 1

1

┌

3

┤ │
│

050. 0

┴ ┘

2345678Column

┌

5

┤ │

┐

├

T F

┐

(Simultaneously) Line 1

Back to Main Menu:

12345678Column
Pres Line 1 LADDER s ‘ESC’
2
3RUN
4CLEA PROG. R

Change Function Block Category:

Line 1
23
3
4M 4

FUN. BLOCK

>

12345678Column

┌

3

┤
│

0000

┴

┐
│
├

T 2

┘

Move the cursor to change to T, C, R, G, H, P, L

Step 1: 12345678Column
Press ‘ Line 1

SEL’
2M 1
3999999├│C 1
4M 2

┌

2

┤ │

┴ ┘

┐

Chapter 3 Program Tools 40

◎ RUN

or STOP

(1) RUN (2) ST P Mode

UN PROG. STOP PROG.

R

>YES >YES
NO NO

Mode O

e the cursor

↑ov ↓

OK Execute the instruction, then back to main menu

ES BackC to main menu

◎Other u Item

M

Men s

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

CLEAR PROG.

YES
>NO

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

WRI

TE

YES
>NO

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

READ

YES
>NO

(1) ∼ (3) Now Press:

↑ ↓

OK Execute the instruction, then back to main menu

ESC Back to main menu

(4) SET (system

ID SET tting (00~99) 01 Æ ID se
REMOTE I / 0 ote I/O Mode ( : n M: Master S: Slave) N
BACK LIGHT ht mode (√: lw li 10s after pressed.) ×
M KEEP √:V lat ×: Non- Volatile) √
I/O NUMBER 0

I/O ALARM √
C KEE
Z SET ×

N
M KEEP fu

P ×

ote:

Move the cursor

setting)

Æ

Rem N one

Æ

Back lig a ays ght ×: light for

Æ

M: non-Volatile ( o ile

Æ

Expansion I/O module number

Æ

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

Æ

in stop/run switching, Co

Æ

Setting keypad input Z1-Z4 is available

nction is only available for keeping M status in RUN mode when power is re-supplied after loss.

（0~3）

unter Present Value Keeping（√:Yes ×:No）

（√:Yes ×:No）

e)

Now Pres :

↑ ↓ ←

Press ‘SEL’

and ‘← →

Press ‘SEL

Note：

s

Move the ur

→

SEL Begin to edit.

’

’ 1. ID SET=

and ‘↑

3. BACK G

4. M KEEP; I/O

OK ition Data Confirm the Ed

ESC 1. Cancel the setting when pressed ‘SEL’

c sor

item’ Move the cursor for ‘ID SET

~99 ; I/O NUMBER=0~3

E I/O = N⇔M⇔S⇔N

T ↓’ 002. REMO
LI HT ; C KEEP ; Z SET =

ALARM =

to Main Menu 2. Back

√⇔×

Chapter 3 Program Tools 41

×⇔√

① When D elected, ID setting range is 0~7 , which should be continuous。ID=0 default as

Master, ID=1~7 default as Slave

② When REMOTE I/O is selected，the distribution of the remote I/O is as follows:

Remote Input X1~X12
Remote Output Y1~Y8

(5) RTC SET

ATALINK is s

Master Slave

←
→

I1~I12
Q1~Q8

R TTC SE V2.0
YY . NN . DD

MO HH : MM

Now Press

Press ‘SEL’

+ ‘← →’

SEL then

↑ ↓

OK Save the Input Data

ESC

(6) ANALOG SET

Move the Cursor

1. YY=00~99,NN=01~12,DD=01~31

2.MO⇔TU⇔WE⇔TH⇔FR⇔SA⇔SU⇔MO

3. HH = 00~23 or MM = 00~59

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

2. Back to Main Menu.

SG2 firmware Version

eters SEL Begin to input param

A 1=GAIN : 010
OFFSET : + 00
A 2=GAIN : 010
OFFSET : + 00

Now Press

↑ ↓

SEL Begin to input parameters

Press ‘SEL’

+ ‘← →’

‘SEL’ +

‘↑ ↓’

OK Save the Input Data

ESC

Note: V1 = A1*A1_GAIN + A1_OFFSET …… V8 = A8*A8_GAIN + A8_OFFSET

1. Move downward the Cursor

2. Switch the setting screen from A1, A2 -> A3, A4 ->A5,A6 -> A7,A8

Move the Cursor

1. GAIN =000~999

2. OFFSET=-50~+50

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

2. Back to Main Menu.

Æ

GAIN (0~999)

Æ

OFFSET (-50~+50)

Chapter 3 Program Tools 42

(7) PASSWORD (setting password)

PASSWORD ╳

0 0 0 0 * * * *

Now Press

SEL

Press ‘SEL’

+ ‘← →’

Press ‘SEL’

+ ‘↑ ↓’

ESC

1. Begin to input numeral

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

Move the cursor

0~F

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

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

2. Back to Main Menu.

PASSWORD

3

Note: If password number is 0001~9FFF, program will be protected.

If password number is A000~FFFE, program and all menu setting will be protected.

（8）LANGUAGE (Selection menu language)

ENGLISH √

>

FRANÇAIS
ESPAÑOL

Æ
Æ
Æ

ITALIANO ÆItalian
DEUTSCH ÆGerman
PORTVGVES ÆPortuguese
SIMPLIFIED CHINESE

Æ

Now Press

Press ‘↑ ↓’

OK Select the language the cursor located

ESC Back to Main Menu

Vertically move the Cursor

Sample:

ENGLISH

>

FRANÇAIS
ESPAÑOL
ITALIANO

√

↓key ↑key

ENGLISH
FRANÇAIS

>

ESPAÑOL
ITALIANO

√

OK

ENGLISH
FRANÇAIS

>

ESPAÑOL
ITALIANO

√

English
French
Spanish

Simplified Chinese

Chapter 3 Program Tools 43

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

INITIAL

> LADDER √

FBD

Now Press:

Press ‘↑ ↓’

OK Select the language the cursor located

ESC Back to Main Menu

Vertically move the Cursor

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

Chapter 4 Relay Ladder Logic Programming 44

Chapter 4: Relay Ladder Logic Programming

Common Memory Types

General output SET output RESET output
Symbol
Input contact
Keypad input
Output coil
Auxiliary
Counter
Timer

contact

[

¿

À

Q Q Q Q Q q 8 (Q1- Q8 / q1-q8)
M M M M M m 15 (M1-MF / m1-mF)
C
T

Inputs (I Memory Type)

The SG2 digital input points are designated I memory types. The number of digital I input points
are 6, 8, or 12 depending on each SG2 model.

Keypad Inputs (Z Memory T y pe)

The SG2 digital input points are designated Z memor y types. The number of digital Z input points
are 4 depending on SG2 H type model.

PULSE output

P (N.O. / N.C.)

T T t 15 (T1-TF / t1-tF)

N.O. Contact

I i 12 (I1-IC / i1-iC)

Z z 4(Z1-Z4 / z1-z4)

C c 15 (C1-CF / c1-cF)

N.C. Contact Number

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 Q1 will be turned on
when input I1 activated.

Auxiliary Rela y s (M Memory Type)

Auxiliary relays are 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, rela ys , lamps, etc.
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 M1 is being
used as an output coil and will energize when input I2 turns on. In the second rung auxiliary relay
M1 is being used as an input and when energized, will turn on outputs Q2 and Q3.

Chapter 4 Relay Ladder Logic Programming 45

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 I3 turns on, timer T1 will start. When the
timer reaches the preset of 5 seconds timer status contact T1 turns on. When T1 turns on, output
Q4 turns on. Turning off I3 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 to or greater than
the preset value of a selected counter. In this example , each time the input contact I4 transitions from
off to on, the counter (C1) increments by one. When the counter reaches the preset of 2 counts, the
counter status contact C1 turns on. When C1 turns on, output Q5 turns on. When M2 turns on
counter C1 will reset. If M9 is turned on, the counter will change from a count-up counter to a
count-down counter.

Specialty Memory Types

Chapter 4 Relay Ladder Logic Programming 46

Symbol

Expansion input coil
Expansion output coil
Differential (one shot)
RT

C
Analog comparator
HMI
PWM
DATA LINK

General output SET output RESET output

[

Y Y Y Y Y y 12 (Y1-YC / y1-yC)

R
G
H
P
L

¿

À

PULSE output

P

N.O. Contact

Lo Hi Used in function block

X x 12 (X1-XC /x1-xC)

D (Positive) d (Negative)

R r 15 (R1-RF / r1-rF)

G g 15 (G1-GF / g1-gF)

N.C. Contact Number

(N.O. / N.C.)

15 (H1-HF)

1 (P1)

8 (L1-L8)

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 47

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 is 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 48

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 transitions 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 I3 is pressed and released Motor Q4 will turn ON and remain on. When Pushbutton I3
is pressed again, Motor Q4 will turn OFF and remain OFF. The pulse output instruction (P) will “flip­flop” its state from ON to OFF at each press of Pushbutton I3.

Chapter 4 Relay Ladder Logic Programming 49

Counter Instructions

The SG2 includes a total 15 separate counters that can be used throughout a
program. Each counter has a choice of 8 operation modes, 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.

Note：

analog input A1~A8 and analog gain+offset value V1~V8.

The figure below shows the relationship between the numbered block diagram for a Counter, the ladder diagram
view, and the software Edit Contact/Coil dialog box.

Symbol Description

Counting Mode (1-6)

c

Use (I1 ~ gF) to set counting up or counting down

d

OFF: counting up (0, 1, 2, 3, 4….)
ON: counting down ( ….3, 2, 1, 0)
Use (I1 ~ gF) to RESET the counting value

e

ON: the counter resets to zero and OFF
OFF: the counter continues to count
Present Counting Value, range:0~999999

f

Target (Setting) Value, range:0~999999

g

Code of the counter (C1 ~ CF total: 15 counters)

h

Compatible Instructions
Inputs
Keypad Inputs
Outputs
Auxiliary
Expansion inputs
Expansion outputs
RT
Counter
Timer
Analog comparator
Normal close contact

coil

C

Range

I1-IC / i1-iC
Z1-Z4 / z1-z4

Q1-Q8 / q1-q8

M1-MF / m1-mF

X1-XC /x1-xC

Y1-YC / y1-yC

R1-RF / r1-rF

C1-CF / c1-cF

T1-TF / t1-tF

G1-GF / g1-gF
Lo

※ The target setting value of the counter could be a constant or the present value of the timer, counter,

Chapter 4 Relay Ladder Logic Programming 50

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. Additionally, the current count value is non-retentive and will reset to zero on a loss of power to the
smart relay. In the e x ample below, the counter will stop counting when it reaches the preset value of 20. Counter
status bit C1 will be ON when the current value is 20.

Chapter 4 Relay Ladder Logic Programming 51

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 . Additionally, the
current count value is non-retentive and will reset to zero on a loss of power to the smart relay. In the example below,
the counter will continue counting after its preset value of 20. Counter status bit C1 will be ON when the current
value is 20.

Chapter 4 Relay Ladder Logic Programming 52

Counter Mode 3 (Fixed Count, Retentive)

Mode 3 Counter operation is similar to Mode 1 except its current count value is retentive. Mode 3 Counter will count up
to a fixed preset value and stop counting at that value. Additionally, the current count value is retentive and will keep its
current count after a loss of power to the smart relay. In the example below, the counter will stop counting when it
reaches the preset value of 20. Counter status bit C1 will be ON when the current value is 20.

Counter Mode 4 (Continuous Count, Retentive)

Mode 4 Counter operation is similar to Mode 2 except its current count value is retentive. Mode 4 Counter will
count up to a fixed preset value and continue counting after the preset value. Additionally, the current count value
is retentive and will keep its current count after a loss of power to the smart relay. In the e x ample below, the
counter will continue counting after its preset value of 20. Counter status bit C1 will be ON when the current value
is 20.

Chapter 4 Relay Ladder Logic Programming 53

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

Mode 5 Counter operation is similar to Mode 2 where its current count value is continuous and non- retentive, except
its C1 status bit will only be ON when the counter counts up to its preset, or down to its preset from a count higher
than its preset. Even with its direction bit set to ON, it will not turn on its C1 status bit when it counts down to zero.
The C1 status bit is fixed to the non-zero preset value regardless of the state of the direction bit. Additionally, the
Mode 5 counter is alwa ys reset to zero, unrelated to the state of its direction bit.

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 zero on a loss of power to the smart relay. In the example
below, the counter will continue counting after its preset value of 20. Counter status bit C1 will be ON when the
current value is 20.

Chapter 4 Relay Ladder Logic Programming 54

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

Mode 6 Counter operation is similar to Mode 4 where its current count value is continuous and retentive, except its
C1 status bit will only be ON when the counter counts up to its preset or down to its preset from a count higher
than its preset. Even with its direction bit set to ON, it will not turn on its C1 status bit when it counts down to zero.
The C1 status bit is fixed to the non-zero preset value regardless of the state of the direction bit. Additionally, the
Mode 5 counter is alwa ys reset to zero, unrelated to the state of its direction bit.

The Mode 6 Counter will count up to a fixed preset value and continue counting after the preset value.
Additionally, the current count value is retentive and will keep its current count after a loss of power to the smart
relay. In the example below, the counter will continue counting after its preset value of 20. Counter status bit C1
will be ON when the current value is 20.

Chapter 4 Relay Ladder Logic Programming 55

High Speed Counters (DC Version Only)

The DC powered version smart relays include two 1 KHz high speed inputs on terminal I1 and I2. 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. These 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 I1 or I2 for forward up-counting to 1Khz maximum at
24VDC high speed input signal. The selected Counter Coil
(C1-CF) will turn ON when the pulse count reaches the target
setpoint 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 between the
numbered block diagram for a Mode 7 Counter, the ladder
diagram view, and the software Edit Contact/Coil dialog box.

Symbol

c
d
e

f
g
h

Description

Counting Mode (7) high speed counting
High speed counting input terminal: I1 or I2 only

Use (I1 ~ gF) to RESET the counting value
ON: the counter reset to zero
OFF: the counter continues to count

Current Count Value, range:0~999999
Preset Value, range:0~999999
Counter Coil Number (C1 ~ CF total: 15 counters)

Chapter 4 Relay Ladder Logic Programming 56

High Speed Counter Mode 8 (DC powered versions only)

The Mode 8 High Speed Counter can use either input terminals I1 or I2 for forward up-counting to 1 KHz
maximum at 24VDC high speed input signal. The selected Counter Coil (C1-CF) 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 Fixed Time xxxx. The counter will reset when the preceding rung is inactive.
The table below describes each configuration parameter for High Speed Counter Mode 8.

In the example below shows the relationship between the

numbered block diagram for a Mode 8 Counter, the ladder
diagram view, and the software Edit Contact/Coil dialog box.

Symbol

c
d

e
f
g

h

Description

Counting Mode(8)—Frequency Comparison
High speed counting input terminal: only I1, I2
Counting interval time:(0~99.99S)
Counter ‘on’ target value (000000~999999)
Counter ‘off’ target value (000000~999999)
Code of Counter (C1~CF Total :15Group)

Chapter 4 Relay Ladder Logic Programming 57

Timer Instructions

The SG2 includes a total of 15 separate timers that can be used throughout
a program. Each timer has a choice of 8 operation modes, 7 for general
purpose timing and 1 (mode 7) for a pulse 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 counters.

Note：
※ The target setting value of the counter could be a
constant or the present value of the timer, counter, analog

input A1~A8 and analog gain+offset value V1~V8.

Timer Mode 0 (Internal Coil)

Mode 0 Timer (Internal Coil) used as internal auxiliary coils.
No Timer preset value. In the example below shows the
relationship between the numbered block diagram for a
Mode 0 timer, the ladder diagram view, and the software Edit
Contact/Coil dialog box.

Symbol Description

Timer Mode (0-7)

c

Timer Unit: 1 : 0.00 - 99.99 sec

d

ON: the timer reset to zero

e

OFF: the timer continues to time
Current timer value

f

Timer preset value

g

Timer Coil Number (C1 ~ CF total: 15 timers)

h

2 : 0.0 - 999.9 sec

3 : 0 - 9999 sec

4 : 0 - 9999 min

Compatible Instructions
Inputs

Outputs
Auxiliary
Expansion inputs
Expansion outputs
RT
Counter
Timer
Analog comparator
Normal close contact

coil

C

Range

I1-IC / i1-iC
Z1-Z4 / z1-z4

Q1-Q8 / q1-q8
M1-MF / m1-mF
X1-XC /x1-xC
Y1-YC / y1-yC
R1-RF / r1-rF
C1-CF / c1-cF
T1-TF / t1-tF
G1-GF / g1-gF

Lo

Chapter 4 Relay Ladder Logic Programming 58

Timer Mode 1 (ON-Delay)

Mode 1 Timer (ON-Delay) will time up to a fixed preset value and stop timing when the current time is equal to the
preset value. Additionally, the current time value is non-retentive and will reset to zero on a loss of power to the
smart relay. In the example below, the timer will stop timing when it reaches the preset value of 5 seconds. Timer
status bit T1 will be ON when the current value is 5.

Chapter 4 Relay Ladder Logic Programming 59

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 current time value is non-retentive and will reset to zero on a
loss of power to the smart relay. The timer reset input is Input I1. In the example below, the timer will stop timing
when it reaches the preset value of 5 seconds. Timer status bit T1 will be ON when the current value is 5.

Chapter 4 Relay Ladder Logic Programming 60

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 current time value is non-retentive and will reset to zero on a loss
of power to the smart relay. In the example below, the timer reset input is Input I1. Also in the example below,
timer status bit T1 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 T1 will turn OFF when the current time value reaches 10 seconds.

Chapter 4 Relay Ladder Logic Programming 61

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 current time value is non-retentive and will reset to zero on a loss
of power to the smart relay. In the example below, the timer reset input is Input I1. Also in the example below, the
timer status bit T1 will turn ON only after its rung transitions from true to false. Timer status bit T1 will turn OFF
when the current time value reaches 10 seconds.

Chapter 4 Relay Ladder Logic Programming 62

Timer Mode 5 (FLASH without Reset)

Mode 5 Timer is a Flash timer without reset that will time up to a fixed preset value then change the state of its
status bit when the current time is equal to the preset value. Additionally, the current time value is non-retentive
and will reset to zero on a loss of power to the smart relay. In the example below, timer statu s bit T1 will be ON
immediately when its rung is true and begin its timing sequence. Timer status bit T1 will turn OFF when the
current time value reaches its preset of 10 seconds. This Flash sequence of the timer status bit T1 will continue as
long as its rung remains true.

Chapter 4 Relay Ladder Logic Programming 63

Timer Mode 6 (FLASH with Reset)

Mode 6 Timer is a Flash timer with reset that will time up to a fixed preset value then change the state of its
status bit when the current time is equal to the preset value. Additionally, the current time value is non­retentive and will reset to zero on a loss of power to the sm ar t r ela y. In the example below, the timer reset
input is Input I 1. Also in the example below, timer status bit T1 will be ON immediately when its r ung is true
and begin its timing sequence. Timer status bit T1 will turn OFF when the current time value reaches its
preset of 5 seconds. This Flash sequence of the timer stat us bit T1 will continue as long as its r ung remains
true.

Chapter 4 Relay Ladder Logic Programming 64

Timer Mode 7 (FLASH Cascade without Reset)

Mode 7 Timer is a Flash timer without reset that uses two timers in a cascade configuration. 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 current time value is
non-retentive and will reset to zero on a loss of power to the smart relay. In the example below, timer status bit T1
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 T2 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.

Note: Timer Mode 7 uses two timers. These timers cannot be reused as timers for other modes in other areas of

the program.

Chapter 4 Relay Ladder Logic Programming 65

Real Time Clock (RTC) Instructions

The SG2 smar t relay includes a total of 15 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.

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

between the numbered block diagram for a Mode 0
RTC, the ladder diagram view, and the software
Edit Contact/Coil dialog box.

Symbol

c
d
e
f
g
h
i
j
k

⑩

Description

Input the first wee k to RTC
Input the second wee k to RTC
RTC mode 0~2, 0: internal coil 1:daily, 2:consecutive days
RTC displays the hour of present time.
RTC displays the minute of present time
Set RTC hour ON
Set RTC Minute ON
Set RTC Hour OFF
Set RTC Minute OFF
RTC Coil Number (R1~RF Total: 15 RTCs)

Chapter 4 Relay Ladder Logic Programming 66

RTC Mode 1 (Daily )

The Daily Mode 1 allows the Rx coil to activate based on a fixed time across a defined set of days per week. The
configuration dialog below allows for selection of the number of days per week (i.e. Mon-Fri) and the Day and Time
for the Rx coil to activate ON, and Day and Time f or the Rx coil to deactivate OFF.

Chapter 4 Relay Ladder Logic Programming 67

RTC Mode 2 (Interval weekly)

The Interval Time Mode 2 allows the Rx coil to activate based on time and day per week. The configuration
dialog below allows for selection of Day and Time for the Rx coil to activate ON, and Day and Time for the Rx coil
to deactivate OFF.

Chapter 4 Relay Ladder Logic Programming 68

RT C Mode 3 (Year-Month-Day)

The Year-Month-Day Mode 3 allows the Rx coil to activate based on Year, Month, and Date. The configuration
dialog below allows for selection of Year and Date for the Rx coil to activate ON, and Year and Date for the Rx
coil to deactivate OFF.

Symbol

c
d
e
f
g
h
i
j
k

Description

RTC mode 3, Year-Month-Day
Setting RTC Year ON
Setting RTC Year OFF
Display RTC Present time: Year-Month-Day
Setting RTC month ON
Setting RTC Day ON
Setting RTC month OFF
Setting RTC Day OFF
RTC Code (R1~RF, total 15 group)

Chapter 4 Relay Ladder Logic Programming 69

RTC Mode 4 ( 30-second adjustment)

The 30-second adjustment Mode 4 allows the Rx coil to activate based on week, hour, minute and second.
The configuration dialog below allows for selection of week, hour, minute and second for the Rx coil to activate
ON, and 30-second adjustment then Rx OFF.

Symbol Description

c

Setting RTC adjustment week

d

RTC mode 4

e

RTC present hour

f

RTC present minute

g

Setting RTC adjustment hour

h

Setting RTC adjustment minute

i

Setting RTC adjustment second

j

RTC Code (R1~RF, total 15 group)

Example1: preset minute < 30s

Example2: preset minute >= 30s

Chapter 4 Relay Ladder Logic Programming 70

A

A

A

A

Comparator Instructions

The SG2 smart relay includes a total of 15 separate comparator instructions that can be used throughout a
program. Each comparator has a choice of 6 operation modes. Additionally, each comparator has 7 parameters
for proper configuration. The table below describes each configuration parameter, and lists each compatible
memory type for configuring counters.

Symbol Description

Comparison Mode(0~5)

c

X analog input (A1~A8/ V1~V8), the present value of the timer, counter.

d

Y analog input (A1~A8/ V1~V8), the present value of the timer, counter.

e

X analog input value(0.00~99.99)

f

Y analog input value (0.00~99.99)

g

Set reference comparative value: could be constant, or the present value

h

of the timer, counter and analog input, analog input (A1~A8/ V1~V8).

Analog comparator Mode 0 (Internal Coil)

Mode 0 Analog Comparator used as internal
auxiliary coils. No preset value.

In the example below shows the relationship

between the numbered block diagram for a Mode 0
Analog Comparator the ladder diagram view, and
the software Edit Contact/Coil dialog box.

Output terminal(G1~GF)

i

Chapter 4 Relay Ladder Logic Programming 71

Analog comparator Mode 1~5

When the relay of analog comparator is ON, there are 5 operation modes described below:
(1) Analog Comparator mode 1 ( AY - ⑥ ≤ AX≤ AY +⑥， ⑦ ON)
(2) Analog Comparator mode 2 (AX ≤ AY , ⑦ ON)
(3) Analog Comparator mode 3 (AX ≥ AY , ⑦ ON)
(4) Analog Comparator mode 4 ( ⑥ ≥ AX, ⑦ ON)
(5) Analog Comparator mode 5 ( ⑥ ≤ AX, ⑦ ON)

Example 1: Analog Signal Compare

In the example below, Mode 4 is the selected function that compares the value of analog input A1 to a constant
value (N) of 2.50. Status coil G1 turns ON is A1 is <= to 2.50.

Chapter 4 Relay Ladder Logic Programming 72

Example 2: Timer/Counter Preset Value Compare

The Comparator instruction can be used to compare Timer , Counter, and RTC values to a constant value or to
each other. In this example below, Mode 5 is the selected function that compares the value of Counter (C1) to a
constant value (N) of 15 counts (the decimal point is ignored). Status coil G1 turns ON if C1 is to 15 counts.

HMI Display Instructions

The SG2 smart relay includes a total of 15 HMI
instructions that can be used throughout a program.
Each HMI instruction can be configured to display
information on the SG2 12×4 character LCD in text,
numeric, or bit format for items such as current
value and target value for timers/counters,
Input/Output bit status, RTC (real time clock) and
Analog comparator .

Each HMI instruction is configured separately using
the Edit»HMI/Text menu selection from the S G2
Client software.
In the adjacent example, HMI instruction H1 is
configured to display the value of I1 and T1, and
some descriptive text. Numeric display data
selections are Timer, Counter, RTC, and Analog. Bit
display data selections for “ON” and “OFF”
messages are “I” inputs, “M” internal relays, “X”
expansion inputs and “Z” keypad inputs.

Allows the SEL button on the SG2 keypad to
activate the selected message onto the LCD even
when Hx coil is inactive.

Chapter 4 Relay Ladder Logic Programming 73

Allows the HMI message to include coil number and selected value

(i.e. T1=003 sec).

Provides access to the Analog Display Set dialog for gain and offset parameters

shown below.
The Analog Display Set dialog allows the user to specify a scaling factor (Gain) and an offset for each analog

input value.

A phone number can be displayed on the screen to aler t an operator to call for
help.

Note: 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

Display Mode (1-2)

c

HMI character output terminal (H1-H8)

g

Chapter 4 Relay Ladder Logic Programming 74

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 Q1. The PWM instruction is able to output up to an 8-stage PWM waveform.

Symbol Description

Set display stages (1~8)

c

Display the present stage as operation(0~8)

d

Input Selected Stage 1(I1~gF)

e

Input Selected Stage 2(I1~gF)

f

Input Selected Stage 3(I1~gF)

g

Set PWM pulse width (0~32768ms)

h

Set PWM Period(1~32768ms)

i

PWM output terminal P1

j

Enable

OFF X X X 0 OFF

ON OFF OFF OFF 1 Set stage 1
ON OFF OFF ON 2 Set stage 2
ON OFF ON OFF 3 Set stage 3
ON OFF ON ON 4 Set stage 4
ON ON OFF OFF 5 Set stage 5
ON ON OFF ON 6 Set stage 6
ON ON ON OFF 7 Set stage 7
ON

ON ON ON 8 Set stage 8

Output PWM

Chapter 4 Relay Ladder Logic Programming 75

Data Link/Remote I/O Instruction (SG2-20Vxx Models Only)

The SG2-20Vxxx transistor output models include the capability to link additional SG2-20Vxx units via the RS-485
connection terminals.
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.
Up to 2 additional SG2 units can be configured as Remote I/O nodes, and linked to one Master smart relay.

Symbol Description

Mode setting (1, 2) 1:sending 2:receiving

c

Set the send/receive points(1-8)

d

Set the send/receive points

e

Send/receive memory list location

f

I/O link output terminal (L1-L8)

g

Selectable Points
Inputs
Outputs
Auxiliary
Expansion inputs
Expansion outputs

Range

coil

I1-IC / i1-iC

Q1-Q8 / q1-q8

M1-MF / m1-mF

X1-XC /x1-xC

Y1-YC / y1-yC

Note: Only one “Mode 1 Send” Data Link instruction (L1-L8) is allowed per
Master
instructions.

ID Memory

W1~W8

0

W9~W16

1

W17~W24

2

W25~W32

3

W33~W40

4

W41~W48

5

W49~W56

6

W57~W64

7

smart relay. All other Data Link instructions must be “Mode 2 Receive”

List Location

The Mode 2 Receive memory range is determined by the Controller ID. Each
controller ID is allocated a range of 8 I/O points (Wx-Wx) that can be read into the
Master smart relay using a DataLink instruction. The adjacent table show the
memory range of Wx locations associated with each controller ID.

The Data Link instruction below is setup for Mode 1 Send where the Master smart relay
is sending 5 I/O points of Inputs to each connected Slave smart relay. The starting Input
is I03 with the resulting range of 5 sending inputs equal to I3 – I7.

Chapter 4 Relay Ladder Logic Programming 76

Example 1: Data Link Mode 1

Set ① = 1, ② = 5, set ③ as the initiate of I3, the state of actual sending terminal I3~I7 is sent to memory
list; the controller ID = 3, the state of corresponding memory list position W25~W32, and relationship of

sending terminal is as below:

Example 2: Data Link Receive mode 2

Set ① = 2, ② = 5, set ③ as start from M3, set ④ as start from W17, when enabling the Data Link, the
state ‘ON/OFF’ of M3~M7 is controlled by the state of memory list position W17~W21.

Chapter 5 FBD Programming 77

Chapter 5: Function Block Diagram Programming

FBD Instructions

Note: FBD program can only be edited and modified in SG2 Client software and write to SG2 controlled
equipments via communication cable. Via controlled equipment, FBD program is available for querying or
the parameter of the function block of the program for modifying.

Function Block Input Output Coil Range
Input I I01~I0C(12)
Keypad input Z Z01~Z04 (4)
Expansion Input X X01~X0C(12)
Output Q Q Q01~Q08(8)
Expansion Output Y Y Y01~Y0C(12)
Auxiliary M M M01~M0F(15)
Knob N N N01~N0F(15)
HMI H H01~H0F(15)
PWM P P01(1)
SHIFT S S01(1)
I/O LINK L L01~L08(8)
Logic /Function B B01~B99(99)
Normal ON Hi
Normal OFF Lo
No Connection Nop

Coil Block Instruction

Chapter 5 FBD Programming 78

PWM Function Block

The PWM output terminal ‘Q1’ can output 8 PWM waveforms. (Only provided for transistor output version)

SHIFT Function Block

Chapter 5 FBD Programming 79

Symbol

c
d
e

Description

SHIFT code (Total 1 group)
Set output type (Q, Y)
Set output shift number (1-8)

Logic Block Instructions

AND Logic Diagram

FBD:

Chapter 5 FBD Programming 80

LADDER:

→

I01 And I02 And I03

Note：The input terminal is NOP which is equivalent to ‘Hi’

AND (EDGE) Logic Diagram

FBD:

LADDER:

→

I01 And I02 And I03 And D
Note：The input terminal is NOP which is equivalent to ‘Hi’

=

=

NAND Logic Diagram

FBD:

Chapter 5 FBD Programming 81

LADDER:

→

Not(I01 And I02 And I03)
Note：The input terminal is NOP which is equivalent to ‘Hi’

NAND (EDGE) Logic Diagram

FBD:

LADDER:

→

Not(I01 And I02 And I03) And d
Note：The input terminal is NOP which is equivalent to ‘Lo’

OR Logic Diagram

FBD:

LADDER:

=

=

→

I01 or I02 or I03

Note：The input terminal is NOP which is equivalent to ‘Lo’

NOR Logic Diagram

FBD:

LADDER:

→

Not ( I01 or I02 or I03 )

Note：The input terminal is NOP which is equivalent to ‘Lo’

=

=

XOR Logic Diagram

FBD:

Chapter 5 FBD Programming 82

LADDER:

→

I01 Xor I02

Note：The input terminal is NOP which is equivalent to ‘Lo’

SR Logic Diagram

FBD:

LADDER:

→

Logic I01 I02 Bxx
Table 0 0 holding
0 1 0
1 0 1
1 1 0
Note：The input terminal is NOP which is equivalent to ‘Lo’

NOT Logic Diagram

FBD:

LADDER:

=

=

→

Not I01

Note：The input terminal is NOP which is equivalent to ‘Hi’

Pulse Logic Diagram

FBD:

LADDER:

→

Note：The input terminal is NOP which is equivalent to ‘Lo’

=

=

Function Block

Chapter 5 FBD Programming 83

The function blocks are classified into 4 sorts: Time, Counter, RTC Comparator ‘R’ and Analog Comparator ‘G’. The
Operation Fundamental is similar to LADDER Function Block’s.

Common Counter Function Block

(1) Counter Mode 1

Counting Input

Up/Down Counting

Reset

Counting Parameter

(2) Counter Mode 2

Counting Input

Up/Down Counting

→
→

→
→

→
→

Reset

Counting Parameter

Note:The “>”means the current value appeared will be greater than present value.

(3) Counter Mode 3

Counting Input

Up/Down Counting

Reset

Counting Parameter

Note:The”PD”means the current value will be retain until the power recover

→
→

→
→

→
→

.

Chapter 5 FBD Programming 84

(4) Counter Mode 4

Counting Input

Up/Down Counting

Reset

Counting Parameter

(5) Counter Mode 5

Counting Input

Up/Down Counting

Reset

Counting Parameter

Note:The “C”means that will keep the current value in 0 during the Reset pin be enable.

(6) Counter Mode 6

→
→

→
→

→
→

→
→

Counting Input

Up/Down Counting

Reset

Counting Parameter

High Speed Counter Function Block

(1) Counter Mode 7

High counting input

Enable Input

Reset

Counter Parameter

Note ：High speed input terminal I1,I2

(2) Counter Mode 8

→
→

→
→

→
→

→
→

High counting input

Enable Input

Reset

Counter Parameter

Note ：High speed input terminal I1,I2

→
→

→

Timer Function Block

Timer mode 0 (Internal coil Mode)

(1)

Chapter 5 FBD Programming 85

Enable Input

(2) Timer mode 1 (ON-Delay A Mode)

Enable Input

Timing Parameter

(3) Timer mode 2 (ON-Delay B Mode)

Enable Input

→

→

→

→

Reset

Timing Parameter

(4) Timer mode 3 (OFF-Delay A Mode)

Enable Input

Reset

Timing Parameter

(5) Timer mode 4(OFF-Delay B Mode)

Enable Input

→
→

→
→

→

→

Reset

Timing Parameter

→
→

(6) Timer mode 5(FLASH A Mode)

Chapter 5 FBD Programming 86

Enable Input

Timing Parameter

(7) Timer mode 6(FLASH B Mode)

Enable Input

Reset

Timing Parameter

(8) Timer mode 7(FLASH C Mode)

→

→

→
→

→

Enable Input

Timing Parameter

RTC Comparator Function Block

(1) RTC Mode 0(Internal Coil)

Enable Input

(2) RTC Mode 1(Daily)

Enable Input

→

→

→

→

RTC Parameter

→

(3) RTC Mode 2 (Continuous)

Chapter 5 FBD Programming 87

Enable Input

RTC Parameter

(4) RTC Mode 3 (Year Month Day)

Enable Input

RTC Parameter

(5) RTC Mode 4(30-second adjustment)

→

→

→

→

Enable Input

RTC Parameter

Analog Comparator Function Block

(1) Analog Comparison Mode 0 (Internal coil)

Enable Input

(2) Analog Comparison Mode 1

Enable Input

Analog Input

→

→

→

→
→

Analog Input

Reference

→
→

Chapter 5 FBD Programming 88

(3) Analog Comparison Mode 2

Enable Input

Analog Input

Analog Input

Reference

(4) Analog Comparison Mode 3

Enable Input

Analog Input

Analog Input

Reference

(5) Analog Comparison Mode 4

→
→

→
→

→
→

→
→

Enable Input

Analog Input

Reference

(6) Analog Comparison Mode 5

Enable Input

Analog Input

Reference

→
→

→

→
→

→

Appendix Application Illustration 89

Appendix Application Illustration

1. Lighting Control for Stairc ase

1.1 Requirement for Staircase Lighting

y When someone goes up-stair or down-stair, the lighting system shall be energized to provide sufficient
luminance.
y After the walker passes the staircase, lighting system shall be turned off in five minutes automatically or
manually.

1.2 Traditional Lighting Control

There are two traditional controls available:

y Apply pulse relay
y Apply automatic timer to control the lighting system on the staircase

Components Applied
Switches

Auto lighting system or pulse relay for staircase
Applying the pulse relay as controller for staircase lighting system

y The lighting is on as long as any switch is turned on.
y Press any switch again to turn off the lighting system.

Shortcoming: It is a frequent weak point for the person to forget turning off the light at most cases.
Auto lighting control system for the staircase
y The light is on whenever the switch is turned on.
Lighting system shall be turned off in a few minutes automatically or manually
Shortcoming: The user has no way to reset the turn-off time.

1.3 Apply SG2 in Lighting System

Devices Applied

Q1 Lamp H1
I1(No terminal) Switch B1
I2(No terminal) Infrared sensor for climbing

Wiring Diagram for Lighting System

Appendix Application Illustration 90

Illustrated program using SG2 in lighting system

Ladder & FUNCTION：

Appendix Application Illustration 91

FBD：

2 Auto Door Control

The auto doors are very popularly installed at the entrance of supermarkets, mansions, banks and hospitals.

2.1Requirement for Auto Door Control

y It automatically opens whenever a person is approaching.
y The door remains open for a certain period and closes if no visitor is present.

2.2 Traditional solution

Appendix Application Illustration 92

Whenever B1 or B 2 senses the approach of a visitor, the door is actuated to open. After an elapse of time, B1 or B2
senses no presence of a visitor; MC 4 will close the door.

2.3 Apply SG2 in Door Control System

Applying SG2 in door control system can simplify the circuit. All that one need to do is connect the action sensor,
limit switch and contactor with SG2.

Devices Applied

MC1 main door open contactor
MC2 main door close contactor
S1(NC contact) closing limit switch
S2(NC contact) opening limit switch
B1(NO contact) outdoor infrared sensor
B2(NO contact) indoor infrared sensor

Wiring Diagram and Program with SG2 applied in door control system.

Appendix Application Illustration 93

Ladder & FUNCTION：

FBD Operation Flow：

Appendix Application Illustration 94

3. Ventilation Control

3.1 Ventilation System Requirement

The main function of the ventilation system is to blow in the fresh air and blow out the waste air as shown in the
below drawing

y The room is provided with exhausted gas blower and fresh air blower
y The flow sensor control the blowing in and out operation
y Over pressure is permitted at no time.

Appendix Application Illustration 95

y The fresh blower will run only if the flow monitor senses that the exhausted gas blower works properly.
y If any irregularity takes place on air in blower and air out blower, the warning lamp will light.

The control circuit for the traditional ventilation system is shown below:

The ventilation system is wholly controlled by the airflow monitor. If there is no flow air in the room after a
designated duration of time, the system will activate the warning system so the user shall shut off the system.

Devices Applied

MC1 main contactor
MC2 main contactor
S0(NC contact) stop switch
S1(NO contact) start switch
S2(NO contact) air flow monitor
S3(NO contact) air flow monitor
H1operation indicator
H2 alarm light

Wiring Diagram and Program with SG2 applied in Ventilation System.

Appendix Application Illustration 96

Ladder & FUNCTION：

FBD Operation Flow：

Appendix Application Illustration 97

4. Plant Gate Control

4.1 Requirements for Plant Gate Control

The main purpose of the plant gate is to control the access of truck, which is manually operated by the gate guard.

y The door guard controls and oversees the opening, closing of the plant door ga te.
y The stop switch can be activated at any time regardless of the gate in fully open or close condition.
y The alarm light will be activated for 5 seconds in advance before the gate operation.
y The damper is provided on the gate. Gate closing operation, whenever the damper is contacted by the gate,

stops.

4.2 Traditional Control Circuit for Gate System

Appendix Application Illustration 98

Devices Applied

MC1 Main Electromagnetic Contactor
MC2 Main Electromagnetic Contactor
S0(NC contact) stop switch
S1(NO contact) open switch
S2(NO contact) close switch
S3(NC contact) open safe damper
S4(NC contact) close safe damper