ICR-3231
5.8.2
I/O Port
Panel socket 10-pin.
Figure 21: I/O connector
Pin
Signal mark
Description
1
A (-)
IN/OUT
2
B (+)
IN/OUT
3
GND
GROUND
Table 10: Connection of RS485
Pin
Signal mark
Description
4
BIN
BINARY IN
5
BOUT
BINARY OUT
Table 11: Connection of I/O
Pin
Signal mark
Description
6
RXD
IN
7
RTS
OUT
8
GND
GROUND
9
CTS
OUT
10
TXD
OUT
Table 12: Connection of RS232
The RS232, RS485, and I/O interfaces are physically on a 10-pin panel socket. All three
interfaces are not isolated from the router.
The I/O user interface is designed for binary input processing and binary output control.
By default, the binary output is open, so it is not grounded. The maximum binary output load
is 36 V/500 mA. The constant current supplied by the binary input is 3 mA.
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