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 +
3TXD TXD +
4RXD
5 signal common signal common
6RTS TXD -
7CTS
8 cable shield cable shield