Connectable components
9.2 COM01.2 RS 232C (V.24) module
NCU 7x0.2
98 Manual, 02/2011, 6FC5397-0AP20-0BA0
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 Cable specification for COM port X491
Characteristic Specification
Connector type 9-pin SUB-D socket; pin
Cable type Prefabricated signal line RS 232C/V.24 (9-pin - 9-pin)
Order number 6FX8002-1AA01
Max. cable length 15 m
Pin assignment
Table 9- 13 COM port X491
Pin Signal name Signal type Meaning
1 DCD Input Receiver signal level
2 RXD Input Serial receive data
3 TXD Output Serial transmit data
4 DTR Output Data terminal equipment ready
5 GND - Ground (reference potential)
6 DSR Input Readiness for operation
7 RTS Output Request To Send
8 CTS Input Clear To Send
9 RI Input Incoming call
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