Siemens SIMATIC IPC327E Operating Instructions Manual page 57

Pin assignment RS232
Pin
1
2
3
4
5
6
7
8
9
Pin assignment RS422
Pin
1
2
3
4
5
6
7
8
9
Pin assignment RS485
Pin
1
2
3
4
5
6
7
8
9
SIMATIC IPC327E
Operating Instructions, 06/2019, A5E40965257-AD
Short description
DCD
RxD
TxD
DTR
M
DSR
RTS
CTS
RI
Short description
TX-
TX+
RX+
RX-
M
nc
nc
nc
nc
Short description
Data-
Data+
nc
nc
M
nc
nc
nc
nc
Meaning
Data carrier detect (I)
Received data (I)
Transmitted data (O)
Data terminal ready (O)
Ground
Data set ready (I)
Request to send (O)
Clear to send (I)
Incoming call (I)
Meaning
Transmit data - (O) for full-duplex mode
Transmit data + (O) for full-duplex mode
Receive data + (I) for full-duplex mode
Receive data - (I) for full-duplex mode
Signal ground
Meaning
Transmit / receive data - (I/O) for half-duplex mode
Transmit / receive data+ (I/O) for half-duplex mode
Signal ground
Technical specifications
7.5 Hardware descriptions
57