Siemens M7-400 ユーザーズマニュアル

12-10

S7-400, M7-400 Programmable Controllers Module Specifications

A5E00069467-07

The EXM 478 expansion module is operated on the ISA bus of the programmable
module. The I/O address area from C000

H

 (to D2FF

H

) in the CPU 486-3,

CPU 488-3, or the FM 456 application module is reserved for this purpose. Each
expansion module occupies 256 bytes (100

H

) in this area. The division of the

address area is shown in Figure 12-6 using the FM 456-4 as an example.

Cn00

Co00

Cp00

Cq00

2) EXM 478
expansion module

Submodule receptacle
number 1

Reserved

00

40

80

All addresses are in hexadecimal notation.

Submodule receptacle
number 5

Submodule receptacle
number 4

Submodule receptacle
number 3

00

40

80

C0

FF

1) EXM 478
expansion module

e.g. FM 456-4

Cr00

3) EXM 478
expansion module

Submodule receptacle
number 0

Reserved

Submodule receptacle
number 6

00

40

80

Reserved

n .. q =Number of the slot of the 

module in the mounting
rack
(in hexadecimal notation) 

Example:
n = 6 FM 456-4

C600H

o = 7 1) EXM 478

C700H

p = 8 2) EXM 478

C800H

q = 9 3. EXM 478

C900H

BF

Figure 12-6

Base Addresses of the Expansion Modules and the Interface Submodules