LG Industrial Systems GLOFA GM6 Series User manual

User’s Manual
LG Programmable Logic Controller
GLOFA GM6 Series
LG Industrial Systems

◎CONTENTS ◎

Chapter 1. GENERAL
1.1 Guide to User’s Manual················································································································1-1
1.2 Features········································································································································1-2
1.3 Terminology···································································································································1-3
Chapter 2. SYSTEM CONFIGURATION
2.1 Overall Configuration····················································································································2-1
2.2 Product List···································································································································2-2
2.2.1 GM6 series Configuration····································································································2-2
2.3 System ConfigurationTypes·········································································································2-3
2.3.1 Basic System·······················································································································2-3
2.3.2 Computer Link System········································································································2-3
2.3.3NetworkSystem··················································································································2-4
Chapter 3. GENERAL SPECIFICATION
3.1 General Specifications ················································································································3-1
Chapter 4. CPU MODULE
4.1 Performance Specifications ··········································································································4-1
4.2 Operation processing····················································································································4-2
4.2.1 Operation processing Methods ···························································································4-2
4.2.2 Operation processing at momentary power failure occurrence··········································4-3
4.2.3 Scan Time····························································································································4-4
4.2.4 Scan Watchdog Timer·········································································································4-4
4.2.5 Timer processing·················································································································4-5
4.2.6 Counter processing·············································································································4-7
4.3 Program········································································································································4-9
4.3.1 Program Configuration········································································································4-9
4.3.2 Program Execution Procedures ·························································································4-10
4.3.3 Task ····································································································································4-13
4.3.4 Error Handling ····················································································································4-19
4.3.5 Precautions when using special modules ··········································································4-20
4.4 Operation Modes ·························································································································4-24
4.4.1 RUN mode··························································································································4-24
4.4.2 STOP mode························································································································4-25

4.4.3 PAUSE mode······················································································································4-25
4.4.4 DEBUG mode·····················································································································4-25
4.4.5 Operation Mode Change····································································································4-26
4.5 Functions ·····································································································································4-28
4.5.1 Restart mode······················································································································4-28
4.5.2 Self-diagnosis·····················································································································4-30
4.5.3 Remote function·················································································································4-31
4.5.4 I/O Force On/Off function···································································································4-32
4.5.5 Direct I/O Operation function······························································································4-33
4.5.6 External Device Error Diagnosis function··········································································4-33
4.6 Memory Configuration·················································································································4-36
4.7 I/O No. Allocation Method············································································································4-38
4.8 Names of Parts····························································································································4-39
Chapter 5. BATTERY
5.1 Specifications································································································································5-1
5.2 Handling Instructions ····················································································································5-1
5.3 Battery Replacement····················································································································5-1
Chapter. 6 USING THE USER PROGRAM IN FLASH MEMORY
6.1 Structure ·······································································································································6-1
6.3Handling ······································································································································6-1
Chapter. 7 DIGITAL INPUT AND OUTPUT MODULES
7.1 Notes on Selecting Input and Output Modules·············································································7-1
7.2 Digital Input Module Specifications·······························································································7-2
7.2.1 16-point 24VDC input module (source/sink type) ·······························································7-2
7.2.2 16-point 24VDC input module (source type)·······································································7-3
7.2.3 32-point 24VDC input module (source/sink type)·······························································7-4
7.2.4 32-point 24VDC input module (source type)·······································································7-5
7.2.5 8-point 110VAC input module ····························································································7-6
7.2.6 8-point 220VAC input module······························································································7-7
7.3 Digital Output Module Specifications····························································································7-8
7.3.1 16-point relay output module·······························································································7-8
7.3.2 16-point transistor output module (sink type)······································································7-9

7.3.3 32-point transistor output module (sink type)·····································································7-10
7.3.4 8-point triac output module·································································································7-11
Chapter 8. POWER SUPPLY MODULE
8.1 Selection of power supply module································································································8-1
8.2 Specifications································································································································8-2
8.3 Names of Parts·····························································································································8-3
Chapter 9. BASE BOARD
9.1 Specifications································································································································9-1
9.2 Names of Parts·····························································································································9-1
Chapter 10. INSTALLATION AND WIRING
10.1 Installation··································································································································10 -1
10.1.1 Installation Environment···································································································10 -1
10.1.2 Handling Instructions········································································································10 -4
10.1.3 Module Loading and Unloading·······················································································10 -7
10.2 Wiring·········································································································································10 -9
10.2.1 Power Supply Wiring········································································································10 -9
10.2.2 Input and Output Devices Wiring ···················································································10 -11
10.2.3 Grounding·······················································································································10-11
10.2.4 Cable Specification for wiring·························································································10 -12
Chapter 11. MAINTENANCE
11.1 Maintenance and Inspection·······································································································11-1
11.2 Daily Inspection···························································································································11-1
11.3 Periodic Inspection······················································································································11-2
Chapter 12. TROUBLESHOOTING
12.1 Basic Procedures of Troubleshooting ······················································································12-1
12.2 Troubleshooting··························································································································12-1
12.2.1 Troubleshooting flowchart used when the POWER LED turns OFF ······························12-2
12.2.2 Troubleshooting flowchart used when the STOP LED is flickering··································12-3
12.2.3 Troubleshooting flowchart used when the RUN and STOP LEDs turns off ···················12-4

12.2.4 Troubleshooting flowchart used when the output load of the
output module does not turns on······················································································12 -5
12.2.5 Troubleshooting flowchart used when a program
cannot be written to the CPU module···············································································12 -6
12.3 Troubleshooting Questionnaire·································································································12 -7
12.4 Troubles hooting Examples ········································································································12 -8
12.4.1 Input circuit troubles and corrective actions·····································································12 -8
12.4.2 Output circuit troubles and corrective actions··································································12 -9
12.5 Error Code List·························································································································12 -11
Chapter 13. Dedicated Cnet communication for GM6
13.1 Introduction ·································································································································13-1
13.2 The example of system configuration·························································································13-2
13.3 The pin assignment of RS -232C connector of the GM6 dedicated Cnet communication ·········13-3
13.4 Frame structure ··························································································································13-4
13.5 List of commands························································································································13-7
13.6 Data type·····································································································································13-8
13.7 Execution of commands (Ex.)·····································································································13-9
13.8 Error code during NAK occurrence (for GM6 dedicated communication)································13-29
APPENDICES
Appendix 1. System Definitions ··································································································APP1 -1
Appendix 2. Flag List··················································································································APP2 -1
Appendix 3. Function/Function Block List··················································································APP3 -1
Appendix 4. Dimensions ·········································································································APP4 -1

Chapter 1. INTRODUCION
1 -1
Chapter 1. GENERAL
1.1GuidetoUser’sManual
This User’s Manual gives the specifications, performance and handling instructions for each of the necessary
units of the GLOFA-GM6 series PLC system.
The configuration of the User’s Manual is as follows.
No Title Content
Chapter 1 General Describes configuration of this manual, units’features and terminology.
Chapter 2 System Configuration Describes available units and system configurations in the GLOFA -
GM6series.
Chapter 3 General Specifications Describes general specifications of units used in the GLOFA-GM6
series.
Chapter 4 CPUModule Describes the performance, specifications and functions of the CPU
module.
Chapter 5 Battery
Chapter 6 Using the user program
inflashmemory
Chapter 7 Digital Input and output
Module
Chapter 8 Power Supply Module
Chapter 9 BaseBoard
Describes the specifications and handling instructions for other
modules except for the CPU module.
Chapter 10 Installation and Wiring Describes installation, wiring and handling instructions for reliability of
the PLC system.
Chapter 11 Maintenance Describes the check items and method for long term normal operation
ofthePLCsystem.
Chapter 12 Troubleshooting Describes various operation errors and corrective actions.
Chapter13
~
Chapter 16
Built-inspecial functions
of GM6 CPU module
Describes Cnet communication dedicated for GM6 CPU (Ch.13), RS -
422 master communication (Ch.14), PID control (Ch.15), and High
speed counter (Ch.16).
Appendix1 System Definitions Describes parameter setting for basic I/O module and communications
module.
Appendix2 Function/
Function Block List Describes the types and processing time of function/function block.
Appendix3 Flag List Describes the types and content of various flags.
Appendix4 Dimensions Shows dimensions of the CPU, I/O module and base board.
REMARK
1) This manual does not describes the special/communications module and programming for them.
For their own functions, refer to the related User’s Manual.

Chapter 1. INTRODUCION
1 -2
1.2 Features
1)GLOFA-GM series features:
(1) Design on the basis of international standard specifications(IEC 1131-3)
•Easy programming device support.
•Languages in compliance with IEC1131-3 are given. (IL/ LD / SFC)
(2) Open network by use of communications protocol in compliance with international standard specifications.
(3) High speed processing with an operation-dedicatedprocessorincluded.
(4) Various special modules that enlarge the range of application of the PLC.
2)GM6-CPUA/B/Cfeatures:
(1) Highspeedoperationprocessing
High speed processing of 0.5㎲/step with an operation-dedicatedprocessorincluded.
(2) Heightened Self-diagnosis
Cause of errors is easily found as error codes has been more divided in accordance with their contents.
(3) Restart mode setting
The Usercanset Cold / Warm restart mode in accordance with the environment.
(4) Debug operation
On-line debugging is available if the PLC operation mode is set to debug operation mode.
Debugging functions :
•Executed by one instruction.
•Executed by the break-point settings
•Executed by the device status
•Executed by the specified scan times
(5) Various Program Executions
Time driven task, external and internal contact task programs as well as scan program can be executed by
setting the execution condition. The user can set variously the program execution mode.
(6) Various data type

Chapter 1. INTRODUCION
1 -3
1.3 Terminology
The following table gives definition of terms used in this manual.
Terms Definition Remarks
Module A standard element that has a specified function which configures
the system. Devices such as I/O board, which inserted onto the
motherboardorbaseunit.
Example)
CPUmodule
Power Supply module
I/O module
PLC system A system which consists of the PLC and peripheral devices. A user
program can control the system.
Cold Restart
To restart the PLC system and user programs after all of the
data(Variables and programs of I/O image area, of internal register,
of timer of counter) were set to the specified conditions
automatically or manually.
Warm Restart
In the warm restart mode, The power supply Off occurrence will be
informed to the user program and the PLC system restarts with the
previous user-defined data and user program after the power
supply Off.
I/O Image Area Internal memory area of the CPU module which used to hold I/O
statuses.
Watch Dog Timer Supervisors the pre-set execution times of programs and warns if a
program is not completed within the pre-set time.
Function Operation Unit which outputs immediately its operation result of an input, while four arithmetic operations comparison operation store
their results in the inside of instructions.
Function Block Operation Units which store operation result in the inside of instruction such as timer and counter and use the operation results
which have been stored through many scans.
Symbolic
Variable
Variables used after the user’s definition of their names and types.
Declarations as ‘INPUT_0’= %IX0.0.2, ‘RESULT = %MD1234’
makes INPUT_0 and RESULT be able to used instead of %IX0.0.2
and %MD123 in programming.
GMWIN A peripheral device for the GLOFA-GM series. It executes program
creation, edit, compile and debugging.
FAM Abbreviationof the word ‘Factory Automation Monitoring S/W’. It is
used to call S/W packages for process supervision.
Task It means startup conditions for a program. There are three types of periodic task, internal contact task and external contact task
which starts by the input signals of external input modules.

Chapter 1. INTRODUCION
1 -4
Terms Definition Remarks
Sink Input
Current flows from the switch to the PLC input terminal if a input signal
turns on.
Source
Input
Current flows from the PLC input terminal to the switch after a input signal
turns on.
Sink Output
Current flows from the load to the output terminal and the PLC output turn
on.
Source
Output
Current flows from the output terminal to the load and the PLC output turn
on.
Fnet Fieldbus Network
Cnet Computer Network
Output
contact
Outputcontact