Expanding Load Memory With Memory Cards; Order Numbers; Function Of The Memory Card; Design Of The Memory Card - Siemens SIMATIC S7-400H Manual

4.5.1

Expanding Load Memory with Memory Cards

Order Numbers

The order numbers for memory cards are listed at the end of this chapter with the
technical specifications.
Installation
The memory card is slightly larger than a credit card and protected by a strong
metal casing. It is plugged into a receptacle at the front of the CPU; the end to be
inserted is obvious from the design of the memory card.
Front elevation
Figure 4-3

Function of the Memory Card

The memory card and an integrated memory area on the CPU together form the
load memory of the CPU. In operation the load memory contains the complete
user program including comments, symbols, special additional information that
permits decompiling of the user program, and all the module parameters.
Automation System S7-400H Fault-tolerant Systems
A5E00068197-07
Grip

Design of the memory card

Installation of a CPU 41x-H
Side elevation
Type plate
4-17