Serial Interfaces And I/O Port; Serial + I/O Connector; Connection Of Rs485; Connection Of I/O - Advantech ICR-3211 User Manual

2.6 Serial Interfaces and I/O Port

The RS232 and RS485 serial interfaces together with the I/O interface are physically con-
nected to the 10-pin panel socket. All three interfaces are not isolated from the router. The
pinout of this conector is described in the tables below.
Pin
1
2
3
We recommend connecting a termination resistor outside the router. Without termination re-
sistors, signal reflections off the unterminated end of the cable can cause data corruption.
Termination resistors also reduce electrical noise sensitivity due to the lower impedance.
Pin
4
5
Pin
6
7
8
9
10
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 at 500 mA. The constant current supplied by the binary input is 3 mA.
Figure 16: Serial + I/O connector
Signal mark Description
B (+) IN/OUT
A (-) IN/OUT
GND GROUND
Table 7: Connection of RS485
Signal mark Description
BIN BINARY IN
BOUT BINARY OUT
Table 8: Connection of I/O
Signal mark Description
RXD IN
CTS IN
GND GROUND
RTS OUT
TXD OUT
Table 9: Connection of RS232
17
ICR-3211