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ICR-4461
2.9
Serial Interfaces
The RS232, RS485 CAN serial interfaces together with the two I/O interfaces are physically
connected to the 14-pin terminal block panel socket. All these interfaces are not isolated from
the router. The pinout of this connector is described in Figure
and the tables below.
Figure 20: Serial Connector Pinout
Pin
Signal mark
Description
1
RXD
Received Data
2
CTS
Clear to Send
3
GND
Ground
4
RTS
Request to Send
5
TXD
Transmit Data
Table 9: Connection of RS232
Pin
Signal mark
Description
6
CAN_H
CAN High
7
CAN_L
CAN Low
Table 10: Connection of CAN Bus
Pin
Signal mark
Description
8
B (+)
In/Out
9
A (-)
In/Out
10
GND
Ground
Table 11: Connection of RS485
23