Controls And Indicators - Siemens S5-155U System Manual

CPU 928B

Controls and indicators

5 - 26
The controls and indicators are arranged on the front plate of the CPU
module:
CPU 928B
R ec eptac le for
U s er Memory Submodule
RUN
Mode Sw itc h
STOP
L E D ( g r e e n )
RUN
STOP
L E D ( r e d )
RÜCKSETZEN
RESET
Momentary - C ontac t Mode Sw itc h
URLÖSCHEN
OVERALL
RESET
Fault Indic ator LED s (red)
SI1
QVZ
Interfac e Fault Indic ator LED s (red)
SI2
ADF
Interfac e 1
ZYK
Interfac e 2
BASP
O r der N umber and Vers ion
S I 2
S I 1
R ec eptac le for Interfac e Submodule
I n t e r f a c e S I 2
P G - I n t e r f a c e, 1 5 - P i n
I n t e r f a c e S I 1
R eleas e Lev er
Loc k ing Pin
Figure 5-3 Front Plate of the CPU 928B
System Manual
C79000-B8576-C199-03