FM 456-2 Functions and Technical Data
4-10
FM 456-2 Application Function Module Installation, Hardware, and Startup
C79000-G7076-C458-01
3
0
8
6
7
9
12
10
13
11
14
FM 456-2
EXM 478
Slot
n
n+2
n+3
n+4
n+1
Figure 4-5 Submodule Slot Numbers on the FM 456-2 and EXM 478
Preferred Slot for IF 964-DP
If the IF 964-DP interface module is inserted in the preferred slot number 3 or if no
IF 964-DP interface module is used, the whole main memory up to 16 Mbytes can
be used.
If the IF 964-DP interface module is inserted in another slot, only up to 15 Mbytes
can be used.
Determining the Basic Address for the Interface Submodule
The method of determining the basic addresses for the interface modules is given
in the chapter “M7-400 Expansion Modules” in
manual /1/, in the section
“Addressing the EXM 478 Expansion Modules”.
Module Cover
Unused slots are protected by module covers.