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Installation and Startup
Table 2-6
Pin Assignments of the Cable for Connecting an FM 456-2 via IF 962-COM to
the COM Interface of a PG/PC with 25-pin Sub-D Socket
Signal
E1 / GND
D2 / RxD
D1 / TxD
E2 / GND
9-pin Sub-D socket
(COM1 to
IF 962-COM)
2.12
Switching On the FM 456-2 for the First Time
When the supply voltage is switched on, all status and error indicators of the
FM 456-2 light up briefly. If the mode switch is set to STOP, the STOP status/error
indicator lights up after switching on. Otherwise the module boots up. In the event
of a fault, the INTF indicator lights up.
If this does not happen with your module, please consult your Siemens contact at
a maintenance and repair center or the SIMATIC Hotline.
The preparation for operation is now completed within the scope of this manual.
You will find the further startup steps, for instance installation of the operating
system and the user program, in the M7-SYS manual.
2-26
Pin
Connection
U
2
3
5
Pin "U" = housing (screen)
Length: maximum 10 m (33 ft.)
FM 456-2 Application Function Module Installation, Hardware, and Startup
Pin
Signal
U
E1 / GND
2
D1 / TxD
3
D2 / RxD
7
E2 / GND
25-pin Sub-D
connector
(COMx on PG/PC)
C79000-G7076-C458-01
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