Hardware description
3.2 SIMOTION P350-3 PC unit
SIMOTION P350-3 and Panels
44
Manual, 05/2009
Serial interface COM1
The COM1 serial port has the following pin assignment:
Serial interface COM1
Pin No.
Short designation
Meaning
Input/output
1
DCD (M5)
Receiving signal (level carrier)
Input
2
RxD (D2)
Receive data
Input
3
TxD (D1)
Transmit data
Output
4
DTR (S1)
Terminal ready
Output
5
GND (E2)
Functional ground (reference potential) –
6
DSR (M1)
Readiness for operation
Input
7
RTS (S2)
Request To Send
Output
8
CTS (M2)
Clear To Send
Input
9
RI (M3)
Incoming call
Input