Chapter 8 Communication Functions

Set according to the following table

 

Item

 

 

 

Contents

 

Station No.

 

 

 

Sets one of station from 0 to 31.

 

Baud rate

 

 

 

Sets one of 1200, 2400, 4800, 9600, 19200, 38400, 57600 bps

 

Data bit

 

 

 

Sets one of 7 or 8 Bits

 

Parity bit

 

 

 

Sets one of none, Even, Odd

 

Stop bit

 

 

 

Sets one of 1 or 2 Bit(s)

 

 

 

 

 

RS232C null modem or RS422/485: can be selected as a communication channel when communication is

 

 

 

 

 

processed by built-in functions of MASTER-K120S Main unit or Cnet I/F module (G7L-CUEC).

 

 

 

 

 

RS232C dedicated modem : can be selected when communication is processed by Cnet I/F module (G7L-

 

Communication

 

 

CUEC).

 

 

 

RS232C dial-up modem: can be selected when common modem communication calling the opponent station

 

channel

 

 

 

 

 

 

 

is processed by Cnet I/F module (G7L-CUEC).

 

 

 

 

 

 

 

 

 

 

* Notes: RS232C dedicated modem and RS232C dial-up modem communication can be processed only by

 

 

 

 

 

Cnet I/F module (G7L-CUEC) supporting RS-232C, not Cnet I/F module (G7L-CUEC) supporting RS-

 

 

 

 

422/485.

 

 

 

 

 

It’s an interval waiting after sending request frame from Master MASTER-K120S before receiving a

 

Timeout

in

 

 

response.

 

 

 

default value is 500ms.

 

Master Mode

 

 

 

 

 

 

 

Setting must be done in consideration of maximum interval of sending and receiving cycle of a master PLC.

 

 

 

 

 

 

 

 

 

 

If the time out is less than the maximum interval of the s/r cycle, error can occur.

 

Dedicated

 

 

 

Master MASTER-K120S can read from and write on Slave MASTER-K120S.

 

Master/Slave

 

 

 

 

 

 

 

 

 

Read status of

 

 

can be select especially when you read Slave MASTER-K120S for monitoring, but not for the other purposes,

 

slave PLC

 

 

 

lest it may cause decreasing communication speed.

(2)Setting registration list

Click 'master' from 'exclusive use' in 'protocol and sending mode' then 'List' button will be activated.

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LG Electronics 120S user manual Cuec