BECKHOFF CX9000 User Manual
Page 29
Product overview
Embedded PC
27
CX9000-N030 connections
The CX9000-N030 system interface features two RS232 interfaces, COM1 and COM2 (9 pin Sub-D plug connector).
The maximum baud rate on all channels is 115 kBit. The pin assignment for all interfaces is equal and described
below. The interface parameter can be set in the operating system or in the PLC program.
RS232 COM interface (connector):
Pin assignment COM interface:
PIN
Signal
Type
Description
1
DCD
Signal in
Data Carrier Detected
2
RxD
Signal in
Receive Data
3
TxD
Signal out
Transmit Data
4
DTR
Signal out
Data Terminal Ready
5 GND
Ground
Ground
6
DSR
Signal in
Dataset Ready
7
RTS
Signal out
Request to Send
8
CTS
Signal in
Clear to Send
9
RI
Signal in
Ring Indicator
Note
The system interface CX9000-N30 can only be used instead and not simultaneously with system
interface CX9000-N031.
The system interface CX9000-N31 can only be used instead and not simultaneously with system
interface CX9000-N030.