Product Overview
1-6
FM 456-2 Application Function Module Installation, Hardware, and Startup
C79000-G7076-C458-01
1.3 Inserting the FM 456-2 in the S7-400 Racks
Inserting in S7-400 Racks
The FM 456-2 application function module can be inserted in different racks of the
S7/M7-400 system.
Table 4-4 shows which modules can be inserted in the different racks.
Table 1-2 Insertion Options for M7-400 Modules
Modules Racks
UR1, UR2
as
central unit
UR1, UR2
as
expansion
unit
CR2 ER1, ER2
Application function module
(FM 456-2)
1)
-
Expansion module
(EXM 478)
*)
*)1)
*)
-
AT adapter module
(ATM 478)
*)
*)1)
*)
-
Mass storage module
(MSM 478)
*)
*)1)
*)
-
1) Not with 460-1 / 461-1 local link
*) Can only be plugged on in conjunction with the application function module.
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