Option Adapters
70
870 USE 101 10 V.2
Front Panel Components, Continued
Pinouts for
Modbus Port 2
The 172 JNN 210 32 Serial Option Adapter uses the following pinouts:
Pin
For RS232
For RS485
1
DTR
RXD -
2
DSR
RXD +
3
TXD
TXD +
4
RXD
5
signal common
signal common
6
RTS
TXD -
7
CTS
8
cable shield
cable shield
