Siemens S5-135U/155U 10 377 Memory Submodules, Without Battery Backup, With Battery Backup

Models: S5-135U/155U

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CPUs, Memory Cards, Memory Submodules, Interface Submodules

5.10 377 Memory Submodules

This section provides a summary

Sof the use of the 377 memory submodules in the 928B (up to -3UB12), 928 (up to -3UA12) and 922 CPUs,

Sand of the technical specifications.

Note

You cannot use the memory submodule 377 for the CPU 928B from version 3UB21, nor for the CPU 928 from version 3UA21.

5.10.1Technical Description

377 memory submodules (RAM submodules) are available with or without battery backup in the following capacities:

Without Battery Backup

16Kbytes

32Kbytes

64Kbytes

With Battery Backup

64 Kbytes

The order numbers for the 377 memory submodules can be found in the ordering information.

5.10.2Notes on Operation

Loading RAM

377 memory submodules are loaded online (from the PG) in the CPU. A

Submodules

description of loading the individual submodules or the entire program can

 

be found in the STEP 5 manual.

5-84

System Manual

C79000-G8576-C199-06

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Siemens S5-135U/155U appendix 10 377 Memory Submodules, Without Battery Backup, With Battery Backup, Loading RAM