Siemens Simatic M7-400 Bedienungsanleitung Seite 430

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CPUs for M7-400
11-2
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
11.1 Performance Features
Introduction
There are two CPUs with different clock frequencies available for use with the
automation computer.
Table 11-1 gives you an overview of the most important performance features of
these CPUs.
Table 11-1 Performance Features of the CPUs
Performance Features
CPU 486-3
(6ES7486-3AA00-0AB0)
CPU 488-3
(6ES7488-3AA00-0AB0)
Processor Pentium 75 MHz Pentium 120 MHz
MEM 478 DRAM memory submodules*
for main memory
Expansion capability
Supply voltage
16 Mbytes
3.3 V
16 Mbytes
3.3 V
Second-level cache No 250 Kbytes
Submodule receptacle for memory card Yes
Submodule receptacles for interface
submodules
2
Connection of expansions Max. 3
MPI Yes
Watchdog * Yes
* see M7-SYS User Manual
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