Siemens S5-135U/155U appendix CPUs, Memory Cards, Memory Submodules, Interface Submodules

CPUs, Memory Cards, Memory	5
Submodules, Interface Submodules

This chapter contains information on the CPUs, memory cards, modules and submodules which you can use in your programmable controller.

The following CPUs may be fitted in an S5-135U/155U central controller:

SCPU 948

SCPU 928B

SCPU 928

SCPU 922.

Chapter Contents

A programmable controller containing a CPU 948 is known as an S5-155U PLC. A programmable controller containing CPUs 928B, 928 and/or 922 (and not the CPU 948) is known as an S5-135U PLC.

You can fit a flash EPROM memory card containing your user program in the CPU 948, 928B -3UA21 and 928 -3UA21. For the CPUs 928B, 928 and 922, there are RAM or EPROM submodules for the purpose.

CPUs 948 and 928B have, apart from the programmer interface, a second serial interface. An interface submodule is required for physical adaptation.

Section	Description	Page
5.1	CPU 948B -3UA13 or CPU 948B -3UA23	5-2
5.2	CPU 948	5-17
5.3	CPU 928B -3UB21	5-30
5.4	CPU 928B	5-42
5.5	CPU 928 -3UA21	5-54
5.6	CPU 928	5-62
5.7	CPU 922	5-71
5.8	374 Flash EPROM Cards	5-80
5.9	376 Memory Submodules	5-82
5.10	377 Memory Submodules	5-84
5.11	Interface Submodules	5-92

System Manual	5-1
C79000-G8576-C199-06