Connection - Siemens NCU 7 0.2 Series Manual

Connectable components
9.2 COM01.2 RS 232C (V.24) module
9.2.3

Connection

The RS 232C (V.24) module has a standardized serial interface.
Properties
COM port X491 is opto-uncoupled.
Cable specification
Table 9- 12
Characteristic
Connector type
Cable type
Order number
Max. cable length
Pin assignment
Table 9- 13
98
Cable specification for COM port X491
Specification
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
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
Manual, 02/2011, 6FC5397-0AP20-0BA0
NCU 7x0.2