User guide

Using the Modbus Ports
102
870 USE 101 00 V.2.2
Pinouts for Modbus RS485 Networks,
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9-Pin D-Shell
Pinout
Here are the pinouts for wiring a male 9-pin D-shell connector for RS485. The
metal shell is connected to chassis ground.
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Pin Function
1 TXD +
2RXD +
3 Signal common
4
5
6 TXD -
7RXD -