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Chapter 8 Communication Functions
8-30
• 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)
Communication
channel
• 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-
CUEC).
• RS232C dial-up modem: can be selected when common modem communication calling the opponent station
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.
Timeout in
Master Mode
• It’s an interval waiting after sending request frame from Master MASTER-K120S before receivin
g
a
response.
• default value is 500ms.
• 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/Slave
Master MASTER-K120S can read from and write on Slave MASTER-K120S.
Read status of
slave PLC
can be select especially when you read Slave MASTER-K120S for monitoring, but not for the other purposes,
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.