Performance Features - Siemens Simatic M7-400 Reference Manual

CPUs for M7-400
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
Processor
MEM 478 DRAM memory submodules*
for main memory
•
Expansion capability
•
Supply voltage
Second-level cache
Submodule receptacle for memory card
Submodule receptacles for interface
submodules
Connection of expansions
MPI
Watchdog *
* see M7-SYS User Manual
11-2
CPU 486-3
(6ES7486-3AA00-0AB0)
Pentium 75 MHz
16 Mbytes
3.3 V
No
Max. 3
S7-400, M7-400 Programmable Controllers Module Specifications
CPU 488-3
(6ES7488-3AA00-0AB0)
Pentium 120 MHz
16 Mbytes
3.3 V
250 Kbytes
Yes
2
Yes
Yes
A5E00069467-07