Connections – BECKHOFF CX1000 User Manual
Page 14
Product Overview
12
Embedded PC
Connections
The basic CPU module is available with different hardware and software options. It is supplied from the power supply
unit, so that only the connections are described here.
Basic CPU module with Ethernet RJ 45 and COM1 (RS232) interface:
RJ 45 interface (socket):
Assignment of the RJ45 interface:
PIN
Signal
Description
1
TD +
Transmit +
2
TD -
Transmit -
3
RD +
Receive +
4
5
connected
not used
6
RD -
Receive -
7
8
connected
not used
TD & RD are exchanged at the hubs or between two PCs.
COM1 interface (connector):
Assignment of the COM1 interface:
PIN
Signal
Type
Description
1
DCD
Signal in
Data Carrier Detect
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
Data Set Ready
7
RTS
Signal out
Request to Send
8
CTS
Signal in
Clear to Send
9
RI
Signal in
Ring Indicator