Rs232 Connections (Cx50X0-N030) - Beckhoff CX50 0 Series Hardware Documentation

Assembly and connecting
3.9

RS232 connections (CX50x0-N030)

The CX50x0-N030 system interface provides an RS232 interface, COM1 (X300). It is implemented on a 9-
pole Sub-D pin strip. If more than one interface is required the system can be extended via the Terminal Bus
(K- or E-bus) or Bus Terminals (KL/EL6001) which provide serial interfaces. The pin assignment is shown at
the bottom of the page.
The maximum baud rate on both channels is 115 kbit. The interface parameters are set via the operating
system or from the PLC program.
RS232 COM interface (connector)
Table 5: Pin assignment of the COM interface
PIN
1
2
3
4
5
6
7
8
9
34
Signal
DCD
RxD
TxD
DTR
GND
DSR
RTS
CTS
RI
Version: 1.9
Type
Signal in
Signal in
Signal out
Signal out
Ground
Signal in
Signal out
Signal in
Signal in
Description
Data Carrier Detected
Receive Data
Transmit Data
Data Terminal Ready
Ground
Dataset Ready
Request to Send
Clear to Send
Ring Indicator
CX50x0