AAEON PCM-QM77 User Manual
Page 58
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C o m p a c t B o a r d
P C M - Q M 7 7
Chapter 2 Quick Installation Guide
2-43
Pin
Pin Name
Signal Type
Signal Level
1 RS485_D-
I/O
±
5V
2 RS485_D+
I/O
±
5V
3 NC
4 NC
5 GND GND
6 NC
7 NC
8 NC
9 NC/+5V/+12V PWR +5V/+12V
10 NC
RS422_TX+
RS422_RX-
NC
NC
NC
RS422_TX-
1
2
9
10
RS422_RX+
GND
NC
NC/+5V/+12V
RS-422
Pin
Pin Name
Signal Type
Signal Level
1 RS422_TX- OUT
±
5V
2 RS422_TX+ OUT
±
5V
3 RS422_RX+
IN
4 RS422_RX-
IN
5 GND GND
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