Cpu 948B -3Ua13 Or Cpu 948B -3Ua23; Technical Description; Multiprocessor Operation - Siemens S5-135U/155U System Manual

CPUs, Memory Cards, Memory Submodules, Interface Submodules
5.1

CPU 948B -3UA13 or CPU 948B -3UA23

This section contains the hardware description and technical specifications of
the CPU 948B -3UA13 or the CPU 948B -3UA23.
Details on programming the CPU 948 can be found in the CPU 948
Programming Guide.
5.1.1

Technical Description

This section contains information on the application, design and structure of
the CPU 948.
Application
You can use the CPU 948 in single and multiprocessor operation in the
S5-135U/155U central controller (see Chapter 6).
There are two versions of CPU 948:
As an external memory medium, you can use a memory card 374.
The following program processing levels are possible:
Design The electronic circuitry of the CPU 948B is on one PCB in the double
Eurocard format. The front plate width is 1 1/3 standard plug-in stations, i.e.
20 mm. In the central controller rack, the CPU 948B -3UA13 or the
CPU 948B -3UA23 occupies one slot.
5-2
The CPU 948-1 offers 640 Kbytes of internal user memory (RAM).
The CPU 948-2 offers 1664 Kbytes of internal user memory (RAM).
Cyclic
Time-controlled (9 different timebases, real-time controlled, timeout)
Interrupt-driven from the S5 bus (8 process interrupts at block boundaries
via IB0 or, alternatively, 4 system interrupts)
Soft STOP.
System Manual
C79000-G8576-C199-06