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User’s Manual
LG Programmable Logic Controller
MASTER-K 120S series
LG Industrial Systems
- When using LGIS equipment, thoroughly read this datasheet and associated
manuals introduced in this datasheet. Also pay careful attention to safety and
handle the module properly.
- Keep this datasheet within easy reach for quick reference
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SAFETY INSTRUCTIONS To Prevent injury and property damage, follow these instructions. Incorrect operation due to ignoring instructions will cause harm or damage, the seriousness of which is indicated by the following symbols. This symbol indicates the possibility of WARNING death or serious injury This symbol indicates the possibility of CAUTION injury or damage to property. ■ The meaning of each symbol in this manual and on your equipment is as follows
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SAFETY INSTRUCTIONS Design Precautions Warning Install a safety circuit external to the PLC that keeps the entire system safe even when there are problems with the external power supply or the PLC module. Otherwise, serious trouble could result from erroneous output or erroneous operation. - Outside the PLC, construct mechanical damage preventing interlock circuits such as emergency stop, protective circuits, positioning upper and lower limits switches and interl
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SAFETY INSTRUCTIONS Design Precautions Caution Do not bunch the control wires or communication cables with the main circuit or power wires, or install them close to each other. They should be installed 100mm (3.94inch) or more from each other. Not doing so could result in noise that would cause erroneous operation. Installation Precautions Caution Use the PLC in an environment that meets the general specification contained in this manual or datasheet. Using the PL
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SAFETY INSTRUCTIONS Wiring Precautions Warning Completely turn off the external power supply when installing or placing wiring. Not doing so could cause electric shock or damage to the product. Make sure that all terminal covers are correctly attached. Not attaching the terminal cover could result in electric shock. Caution Be sure that wiring is done correctly be checking the product’s rated voltage and the terminal layout. Incorrect wiring cou
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SAFETY INSTRUCTIONS Startup and Maintenance Precautions Warning Do not touch the terminals while power is on. Doing so could cause electric shock or erroneous operation. Switch all phases of the external power supply off when cleaning the module or retightening the terminal or module mounting screws. Not doing so could result in electric shock or erroneous operation. Do not charge, disassemble, heat, place in fire, short circuit, or solder the battery. Mi
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Revision History Date Code Revision history 2002.7. 10310000380 First edition is published 2003.5. 10310000380 A revised edition is published – Main unit and expansion modules are added – Built-in function are upgraded 2003.9 10310000380 A revised edition is published. - Main units are added - Built-in functions are upgraded.
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◎ Contents ◎ Chapter 1. General 1.1 Guide to Use This Manual ················· 1 - 1 1.2 Features ······················· 1 - 2 1.3 Terminology ······················ 1 - 3 Chapter 2. System Configuration 2.1 Overall Configuration ··················· 2 - 1 2.1.1 Basic System································································································ 2 - 1 2.1.2 Cnet I/F System······················································································
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4.4 Communication I/F Module ················· 4 - 13 4.4.1 Cnet I/F Module····························································································4 - 13 4.4.2 Fnet I/F Module ····························································································4 - 13 4.4.3 Pnet I/F Module····························································································4 - 14 4.4.4 DeviceNet I/F Module ······················································
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5.9.2 Usage ········································································································5 - 30 5.10 External Memory Module ················· 5 - 32 5.10.1 Structure ···································································································5 - 32 5.10.2 Usage·······································································································5 - 32 5.11 RTC Module······················ 5 - 34 5.11.1 Structure ············
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Chapter 8. Communication Function 8.1 Dedicated Protocol Communication ·············· 8 - 1 8.1.1 Introduction ·································································································· 8 - 1 8.1.2 System configuration method ··········································································· 8 - 2 8.1.3 Frame Structure ···························································································· 8 - 5 8.1.4 Lists of Commands ···············
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Chapter 10. Maintenance 10.1 Maintenance and Inspection ················ 10 - 1 10.2 Daily Inspection ···················· 10 - 1 10.3 Periodic Inspection ··················· 10 - 2 Chapter 11. Troubleshooting 11.1 Basic Procedure of Troubleshooting ············· 11 - 1 11.2 Troubleshooting ············································································ 11 - 1 11.2.1 Troubleshooting flowchart used when the power LED turns off ·····························11 - 2 11.2.2 Tr
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Chapter 1 General Chapter 1. General 1.1 Guide to Use This Manual This manual includes specifications, functions and handling instructions for the MASTER-K120S series PLC. This manual is divided up into chapters as follows: No. Title Contents Chapter 1 General Describes configuration of this manual, unit's features and terminology. Chapter 2 System configuration Describes available units and system configurations in the MASTER-K120S series. Chapter 3 General Specification D
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Chapter 1 General 1.2. Features 1) MASTER-K120S series is extremely compact, to fit a wide range of applications and have following features. (1) High speed processing High speed processing of 0.1~0.9µs/step with an general purpose processor included . (2) Various built-in functions The main unit can perform many functions without using separate modules. Therefore, It is possible to construct various systems just using the main unit. • Fast Processing Applications
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Chapter 1 General 1.3 Terminology The following table gives definition of terms used in this manual. Terms Definition Remarks Example) A standard element that has a specified function which configures the CPU module Module system. Devices such as I/O board, which inserted onto the mother board Power Supply module or base unit. I/O module A single module or group of modules that perform an independent Example) Unit Operation as a part of PLC system. Main unit A system
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Chapter 1 General Terms Definition Remarks Current flows from the switch to the PLC input terminal if a input signal turns on. Sink Input Current flows from the PLC input terminal to the switch after a input signal turns on. Source Input Current flows from the load to the output terminal and the PLC output turn on. Output Sink Output Contact Current flows from the output terminal to the load and the PLC output turn on. Source Output Output Contact
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Chapter 2 System Configuration Chapter 2. System Configuration The MASTER-K120S series has suitable to configuration of the basic, computer link and network systems. This chapter describes the configuration and features of each system. 2.1 Overall Configuration 2.1.1 Basic system expansion Main unit module expansion cable Total I/O points • 10-120 points Standard Economic Digital I/O module • 3 modules • 2 modules Maximum number
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Chapter 2 System Configuration 2.1.2 Cnet I/F system Cnet I/F System is used for communication between the main unit and external devices using RS-232C/RS-422 Interface. The MK120S has a built-in RS-232C port, RS-485 port and has also G7L-CUEB for RS-232C, G7L-CUEC for RS-422. It is possible to construct communication systems on demand. 1) 1:1 Communications system (1) 1:1 ratio of an external device (computer) to main unit using a built-in port MASTER-K12
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Chapter 2 System Configuration (3) RS-232C Communication over a long distance via modem by Cnet I/F modules MASTER-K120S G7L-CUEB G7L-CUEB MASTER-K120S Modem Modem MASTER-K120S G7L-CUEB Modem Modem 2) 1:n Communications system This method can connect between one computer and multiple main units for up to 32 stations Can be connected Max. 32 stations RS-232C ⇔ RS-422 Converter G7L-CUEC G7L-CUEC MASTER-K120S MASTER-K120S MASTER-K1
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Chapter 2 System Configuration 2.2 Product Functional Model The following describes functional model of the MASTER-K120Sseries. 2.2.1 Product Functional Block Product function block for the K120S series is as follows. Main Unit Expansion Modules Power supply Input signal Input signal Power Input Input supply DC24V Special/communication Power • supply CPU modules Output Output Comm. I/F
