Rs232; Fig. 3 Rs232 Pin Numbering; Table 2 Rs232 Pin Assignment - Beckhoff CP77 Series Manual

Product overview
3.2.1

RS232

The COM1 serial interface (X100) is fed out via a 12-pin round connector. The signals comply with the
RS232 standard. The interface is used to connect serial peripheral devices.
The C9900-K234 adapter cable is supplied with the panel PC. This allows you to connect serial peripheral
devices with standard D-sub connector.
X100
7
6
5
8
12
4
9
11
3
10
1 2
Fig. 3: RS232 pin numbering
Table 2: RS232 pin assignment
Pin
1
2
3
4
5
6
7
8
9
10
11
12
12
Signal
DCD
DSR
RxD
RTS
TxD
CTS
DTR
RI
GND
NC
NC
NC
Version: 3.4
Description
Data Carrier Detect
Data Set Ready
Receive Data
Request to Send
Transmit Data
Clear to Send
Data Terminal Ready
Ring Indicator
Ground
not used
not used
not used
CP77xx