LG Electronics 120S user manual G7E-DR10A

Chapter 8 Communication Functions

8.1.7 1:1, 1:n Built-in communication between MASTER-K120S's

1) Introduction

1:1 built-in communication between MASTER-K120S's is that which constitutes a built-in communication system with the method of 1(master) : 1(slave). Setting Base parameter and communication parameter in KGLWIN can easily constitute this system. Communication protocol currently applied is the same with Cnet I/F used for MASTER-K. Main functions are following.

•It can organize device area into 64 data access blocks by WORD unit, and set a communication time-out limit for each block.

•It can reestablish flag in relation with error codes and slave PLC operating mode according to parameter setting.

•It can reset flag related with error codes and sending/receiving error frequency of each parameter.

•It monitors communication status, using monitoring function of KGLWIN.

MASTER-K120S		MASTER-K120S
main unit	G7E-DR10A	main unit
(Master: station no. 1)		(Slave: station No. 31)

1:1 built-in communication between MASTER-K120S

This communication cabling map is the same for (3) 1:1 Connecting with other MASTER-K120S in 8.1.2 "System configuration method using built-in communication."

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