Installation and Startup
2-25
FM 456-2 Application Function Module Installation, Hardware, and Startup
C79000-G7076-C458-01
Table 2-4 “Null-modem” Connector Cable for Connecting FM 456-2 via IF 962-COM to the
COM Port of a PG/PC using a 25-Pin Sub-D Socket
Signal Pin Connection Pin Signal
E1 / GND U Connected to U E1 / GND
M5 / DCD 1 _
D2 / RxD 2 Connected to 2 D1 / TxD
D1 / TxD 3 Connected to 3 D2 / RxD
S1 / DTR 4 Connected to 6 M1 / DSR
E2 / GND 5 Connected to 7 E2 / GND
M1 / DSR 6 Connected to 20 S1 / DTR
S2 / RTS 7 Connected to 5 M5 / CTS
M2 / CTS 8 Connected to 4 S2 / RTS
M3 / RI 9 _ 22 M3 / RI
9-pin Sub-D socket
(COM1 to
IF 962-COM)
Pin “U” = housing (screen)
Length: maximum 10 m (33 ft.)
25-pin Sub-D
connector
(COMx on PG/PC)
Connection Without Control Cables
If the data traffic via the COM interface is to be controlled exclusively via the data
lines, a connecting cable as described below is sufficient for connecting your
FM 456-2 to a PG/PC.
If the free COM interface of your PG/PC has a 9-pin Sub-D connector, you can use
Table 2-5 for the pin assignments of the connecting cable.
Table 2-5 Pin Assignments of the Cable for Connecting an FM 456-2 via IF 962-COM to
the COM Interface of a PG/PC with 9-pin Sub-D Connector
Signal
Pin Connection Pin Signal
E1 / GND U U E1 / GND
D2 / RxD 2 2 D2 / RxD
D1 / TxD 3 3 D1 / TxD
E2 / GND 5 5 E2 / GND
9-pin Sub-D socket
(COM1 to
IF 962-COM)
Pin “U” = housing (screen)
Length: maximum 10 m (33 ft.)
9-pin Sub-D socket
(COMx on PG/PC)
If the COM interface of your PG/PC has a 25-pin Sub-D socket, you can use
Table 2-6 for the pin assignments of the connecting cable.
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