Connection - Siemens NCU 7x0.3 PN Series Manual

9.4.3

Connection

The RS 232C (V.24) module has a standardized serial interface.
Properties
COM port X491 is opto-uncoupled.
Cable specification
Table 9- 72
Characteristic
Connector type
Cable type
Order number
Max. cable length
Pin assignment
Table 9- 73
NCU 7x0.3 PN
Manual, 09/2011, 6FC5397-1EP40-0BA0
Cable specification for COM port X491
Version
9-pin SUB-D socket; pin
Prefabricated signal line RS 232C/V.24 (9-pin - 9-pin)
6FX8002-1AA01
15 m
COM port X491
Pin Signal name
1 DCD
2 RXD
3 TXD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
9.4 COM01.3 RS 232C (V.24) module
Signal type Meaning
Input Receiver signal level
Input Serial receive data
Output Serial transmit data
Output Data terminal equipment ready
- Ground (reference potential)
Input Readiness for operation
Output Request To Send
Input Clear To Send
Input Incoming call
Connectable components
151