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Pin
Pin Name
19
RIA/+5V/+12V
20
RIB/+5V/+12V
COM Port 1 RS-422
Pin
Pin Name
3
GND
5
RS422_TX-
7
RS422_TX+
9
RS422_RX+
11
RS422_RX-
COM Port 1 RS-485
Pin
Pin Name
3
GND
5
RS485_D-
7
RS485_D+
Note: COM1 RS-232/422/485 can be set by BIOS settings. Default is RS-232.
Note: COM1 RI/+5V/+12V function can be set by BOM (R318-RI/ R320±12V/ R319±5V)
Chapter 2 – Hardware Information
Signal Type
Signal Level
IN/ PWR
IN/ PWR
Signal Type
Signal Level
GND
GND
OUT
±5V
OUT
±5V
IN
IN
Signal Type
Signal Level
GND
GND
I/O
±5V
I/O
±5V
+5V/+12V
+5V/+12V
14
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