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Hardware Information
The serial port COM has the following pinout:
Pin No.
Designation
1
DCD
2
RxD
3
TxD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
RI
7-10
1
5
9
6
Description
Data carrier detect
Receive data
Transmit data
Data terminal ready
Ground
Data set ready
Request to send
Clear to send
Incoming call
Input /Output
Input
Input
Output
Output
-
Input
Output
Input
Input
SIMATIC Field PG P4 Manual
A5E00180080-04
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