ICR-2834
2.6
Serial Interfaces
Two independently switchable serial interfaces are connected to the 16-pin terminal block
panel socket. Both interfaces can be switched independently to the RS232 or RS485 serial
interfaces by the switch located on the left of the terminal socket.
If switches are switched off, serial interfaces are switched to operate as RS485, see Fig-
ure
, Table
and Table
Figure 11: Both interfaces in RS485 mode
Pin
Signal mark
Description
2
D (+)
In/Out
1
D (-)
In/Out
5
GND
Ground
Table 6: Connection of the first serial interface switched to RS485 mode
Pin
Signal mark
Description
10
D (+)
In/Out
9
D (-)
In/Out
13
GND
Ground
Table 7: Connection of the second serial interface switched to RS485 mode
18