I/O Connectors; Com Connector - Advantech ITA-5231 Series User Manual

2.3

I/O Connectors

2.3.1

COM Connector

ITA-5231 is equipped with two RS-232/422/485 DB9 connectors. The default setting
is RS-232.
Table 2.5: COM Connector Pin Definitions
RS-232
Pin Signal Name
1 DCD
2 RxD
3 TxD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
Figure 2.2 ITA-5231 I/O View
RS-422
Signal Name
TxD(-)
TxD(+)
RxD(+)
RxD(-)
GND
NC
NC
NC
NC
11
RS-485
Signal Name
DATA-
DATA+
NC
NC
GND
NC
NC
NC
NC
ITA-5231 User Manual