User`s manual

SH-300 User’s Manual Connection with PLC
Page 67 of 103
4.7 Koyo S Series
SH-300 can communicate with Koyo S series PLC, the communication port is the programming
port of PLC
SH-300 software configuration:
Item Content
SH-300 COM port 9 pin COM port
PLC COM port Programming port
Default parameter 9600bps、8bits、1stop、0dd
Station No. 1-99 ,1 is Windows default
Distance (Max.) 15m
Communication mode RS232
Cable type
MD2-SZ applies to SZ、SH、SH series
MD2-SG applies to SU、SG series
Inner relay address M000-M377
Register address R2000-R7777
Connection guidance of MD2-SZ:
1 GND
2 RXD
SH300 side
3 TXD
3 RXD PLC side
9PIN D shape 4 TXD
（6PIN）
Female plug
5 GND 6 GND
Connection guidance of MD2-SG:
2 RXD 2 TXD
SH300 side 3 TXD 3 RXD PLC side
9PIN D shape 4 RTS
（25PIN）
Female plug 5 CTS
5 GND 7 GND
( when SH-300 communicates with Koyo S series PLC you are recommended to use the programming
cable )
The picture for 6 pin
RJ126 Female plug