13.1 PLC Connection 13-5
PLC
C20H / C28H / C40H
Standard setting
C120-LK201-V1 / C120-LK202-V1
Switch setting
The communication parameter setting is fixed to 7 bits for data length, 2 bits for stop bit, and even for parity.
C200H-LK201-V1 / C200H-LK202-V1
Front switch setting
Back switch setting
Item Setting Remarks
Start Bit 1 bit
Communication parameter format can be specified in the DM920 to
DM923 device memory.
For more information, refer to the PLC manual issued by the
manufacturer.
Data Length 7 bits
Parity Even
Stop Bit 2 bits
Baud Rate 9600 bps
Switch No. Setting Contents
SW1
1 to 5 OFF Unit No. 0
6 to 7 OFF Not used
8 ON Starts operation at power-up
SW2
1OFF
19200 bps
2OFF
3ON
4OFF
5OFFNot used
6 OFF 1 : n protocol
7ON
Disables command levels 1, 2, and 3
8ON
SW3
1ON
CTS switch: always ON
2OFF
3ON
LK201-V1: internal synchronization
LK202-V1: terminating resistance provided
4OFF
5ON
6OFF
7 to 8 OFF Not used
Switch Setting Contents
SW1 0 Higher-order digit of the unit No. (10)
SW2 0 Lower-order digit of the unit No. (1)
SW3 6 19200 bps
SW4 2 Disables command levels 1, 2 and 3 / 7 / 2 / even
Unit Switch Setting Contents
LK201
SW1 OFF
Not used
SW2 OFF
SW3 ON 1 : n protocol
SW4 OFF 5-V power not supplied
CTS switch 0 0 V (always ON)
LK202
Terminating
resistance
ON Provided
Protocol OFF 1 : n protocol
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