Hardware Descriptions; External Ports; Com1/Com2 - Siemens SIMATIC IPC427D Operating Instructions Manual

Technical specifications

8.6 Hardware descriptions

8.6 Hardware descriptions
8.6.1

External ports

8.6.1.1

COM1/COM2

Serial port COM1, 9-pin (plug) or COM2
Pin no.
1
2
3
4
5
6
7
8
9
122
Short description Meaning
DCD Data carrier detect
RxD Received data
TxD Transmit data
DTR Data terminal ready
GND Ground
DSR Ready for operation
RTS Request to send
CTS Clear to send
RI Incoming call
Input / output
Input
Input
Output
Output
-
Input
Output
Input
Input
Operating Instructions, 05/2017, A5E31347215-AB
SIMATIC IPC427D