Siemens S7-400 Benutzerhandbuch
CPUs for M7-400
11-41
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
A5E00069467-07
Memory Areas for AT Cards
AT cards which are inserted in the expansion module ATM 478 can occupy the
following memory areas:
following memory areas:
Range
M7 RMOS32
M7 RMOS32 with MS-DOS
M7 RMOS32
with
Without EMS
With EMS
with
MS-Windows
D 0000H to E 7FFFH
96 K
96 K
32 K
2)
32 K
2)
C 8000H to C BFFFH
16 K
16 K
16 K
16 K
C C000H bis C EFFFH
1)
12 K
12 K
12 K
12 K
C F000H to C FFFFH
4 K
4 K
4 K
4 K
1)
The area is only available if no memory card is present.
2)
Under M7 RMOS32 with MS Windows, or if the driver software under MS-DOS requires
expanded memory (EMS), the memory manager EMM386 occupies 64K in the area
D0000H to E7FFFH because it must be operated in EMS mode.
expanded memory (EMS), the memory manager EMM386 occupies 64K in the area
D0000H to E7FFFH because it must be operated in EMS mode.
I/O Address Area
Addressing the ISA-compatible input/output components is done in the I/O area
under the addresses from 0100
under the addresses from 0100
H
to
03FFH. The addresses specified by the ISA
architecture are used here. In contrast to the original AT, the I/O addresses in the
CPUs are completely decoded so that the addresses above 03 FFH can be used
for addressing M7-400-specific hardware.
CPUs are completely decoded so that the addresses above 03 FFH can be used
for addressing M7-400-specific hardware.
I/O Address Area for AT Adapter Modules
If you are using AT adapter modules, the following address areas are available for
addressing:
addressing:
•
0200
H
to 03FF
H
•
Except for the area 3 E0H to 3 E3H and
•
Except for the areas which the interface submodules are occupying (see the
“Interface Submodules” chapter).
“Interface Submodules” chapter).