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The default parameters of LG Master K-Modbus : 9600, 8, 1, even parity, station no.1
PLC settings:
Note: (1)Turn on PLC switch BUILT-IN CNET
(2)Please choose Modbus Slave protocol
RS232 communication
3-8-3.Cable connection
1. LG Modbus Rtu RS232:
OP Controller
9-pin D-type female port 9-pin D-type male port