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(a) RJ45 Pin Male (b) RJ45 Pin Female
Figure 5-6: Communication Port
Table 5-2: Description of RJ45 Pin
RJ45 Pin
Signal
Meaning
Description
1
RS485 B
2-wire RS485 communication,
complying with the Modbus protocol
2
RS485 A
2-wire RS485 communication,
complying with the Modbus protocol
3
NC
Reserved
4
CAN H
2-wire CAN communication,
complying with the CAN protocol
5
CAN L
2-wire CAN communication,
complying with the CAN protocol
6
NC
Reserved
7
RS485 A
RS485 communication,
complying with the Modbus protocol,
connect to Pin2 in parallel
8
RS485 B
RS485 communication,
complying with the Modbus protocol,
connect to Pin1 in parallel
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