
Product Overview
1-6
System Software for M7-300 and M7-400 Installation and Operation
C79000-G7076-C850-02
Mass Storage
M7 CPU modules and M7 application modules are equipped with the following
types of mass storage (see Table 1-5):
Memory cards (such as those in S7-CPUs)
Hard disk and diskette
All programmable M7 modules can be optionally equipped with a hard disk and
a 3.5 inch diskette drive via the MSM expansion board. As is the case with the
memory card, you can address the diskette on both the PC or programming
device and the M7-300/400 system.
On-board silicon disk (OSD)
This mass storage medium has the same performance characteristics as a
hard disk drive on which application programs can be stored. The FM 456-4
application module can be optionally equipped with an OSD.
Table 1-5 Mass Storage for M7 Systems
Mass Storage Capacity M7-300 Module M7-400 Module
Hard disk from 512MB MSM 378 MSM 478
3.5 inch diskette 1.44MB MSM 378 MSM 478
Memory Card 2
*)
, 4, 8, 16 MB CPU 388-4
FM 356-4
CPU 488/486-3
FM 456-4
OSD 4MB - Optional in
FM 456-4
*)
Not for a complete operating system
Note
For details on which system variants are supported by the current product version
as regards their main memory configurations and mass storage media, please
refer to Table 1-4 on page 1-5.
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