Siemens S5-135U/155U - Manual (Page 146)

5-6
System Manual
C79000-G8576-C199-06
The controls and indicators are arranged on the front plate of the CPU
module:
CPU 948U
QVZ
ADF
ZYK
BASP
RUN
STOP
RESET
SI2
OV-
RESET
SIEMENS
6ES5948-3UA13
SI1
S–F
Receptacle for
User Memory Submodule
Momentary-Contact Mode Switch
Mode Switch
RUN LED (green)
STOP LED (red)
Fault Indicator LED (red)
PG Interface, 15-Pin
Interface SI1
Release Lever
Locking Pin
Order Number and Version
SYS FAULT LED (red)
SI1 Interface Fault Indicator LED (red)
SI2 Interface Fault Indicator LED (red)
Figure 5-2 Front Plate of the CPU 948-3UA13 or the CPU 948-3UA23
Controls and
Indicators
CPUs, Memory Cards, Memory Submodules, Interface Submodules