15
Power In, Serial Port A
On rear panel. A 7-C Connector.
NOTE: All signals are electrically isolated from the chassis
ground and power source.
Serial Port B
On rear panel. A switchable RS232/RS422 serial port +
external event input.
A 9-C connector fitted with a sealing cap.
Pin Signal Name
Description
1 GND-A
Ground for serial port (electrically isolated from chassis
ground)
2 PWR IN –
Ground for power input (electrically isolated from chassis
ground)
3 TXD (Output) Port A RS232 TXD
4 RTS (Output) Port A RS232 RTS
5 CTS (Input)
Port A RS232 CTS
6 PWR IN +
External Power Input (9-36 V DC)
7 RXD (Input)
Port A RS232 RXD
Pin
RS232
RS422
1
NC
NC
2
RX (IN)
RX+ (IN)
3
TX (OUT)
TX– (OUT)
4
NC
NC
5
GND-B
GND-B
6
NC
NC
7
RTS (OUT)
TX+ (OUT)
8
CTS (IN)
RX– (IN)
9
EVENT
EVENT (IN)
1
7
6
5
2
3
4
