Siemens S5-135U/155U - Manual (Page 141)

5-1
System Manual
C79000-G8576-C199-06
CPUs, Memory Cards, Memory
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:
S
CPU 948
S
CPU 928B
S
CPU 928
S
CPU 922.
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
Chapter
Contents
5