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Siemens S5-135U/155U User Manual

Page 197

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5-57

System Manual
C79000-G8576-C199-06

The controls and indicators are arranged on the front plate of the CPU
module:

CPU 928A

QVZ

ADF

ZYK

BASP

RUN

STOP

RESET

SI1

OVERALL

RESET

Receptacle for
User Memory Submodule

Momentary-Contact Mode Switch

Mode Switch

LED (green)

LED (red)

Fault Indicator LEDs (red)

PG Interface, 15-Pin

Release Lever

Locking Pin

Order Number and Version

SIEMENS

ES5928-3UA21

Interface Fault Indicator LED (red)

Figure 5-7

Front Plate of the CPU 928 -3UA21

Controls and
Indicators

CPUs, Memory Cards, Memory Submodules, Interface Submodules