376 Memory Submodules; Technical Description; Notes On Operation - Siemens S5-155U System Manual

5.6

376 Memory Submodules

5.6.1

Technical Description

Ordering information
5.6.2

Notes on Operation

Programming the memory
submodules
System Manual
C79000-B8576-C199-03
This section provides a summary
• • of the use of the 376 memory submodules in the 928B, 928 and
922 CPUs,
• • and of the technical specifications.
The 376 memory submodules serve as a storage medium for user
programs and user data. They contain UV-erasable CMOS EPROMs.
376 memory submodules are available in the following capacities:
• • 16 Kbytes
• • 32 Kbytes
• • 64 Kbytes
The order numbers for the SIMATIC S5 memory submodules can be
found in the ordering information.
You program the 376 memory submodules off-line on the
SIMATIC S5 programmers. The link to the PG is provided by the
EPROM programming interface integrated in the PG.
A description of EPROM programming can be found in the STEP 5
manual. Use an adhesive label to cover the EPROM window (erasing
window) after programming.
Caution
CMOS memory submodules are destroyed by programming with
the wrong programming number. A list of valid order nos.
(MLFBs) and programming numbers can be found in your
STEP 5 software in the EPROM package.

376 Memory Submodules

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