Siemens S5-135U/155U - Manual (Page 285)

6-23
System Manual
C79000-G8576-C199-06
6.5.2 Settings on the Coordinator
Shown in Figure 6-9 are all the indicators and controls on the front plate of
the COR 923C.
Setting the PG Multiplexer:
S1.3 to enable/lock out the “Test” mode
S1.4 to S1.6 to set the number of CPUs
Setting the Coordination Section:
S2.2 to S2.6: Base address
S3.1 to S3.8: Activating the slots to be served by the COR923C
Mode switch for RUN, STOP and TEST
PG interface, 15-pin
“IF FAULT” LED
indicates fault at the serial interface.
If the interface is not in use, the LED is permanently lit.
“BUS FAULT” LEDs
These are allocated to the relevant CPUs and light up when the max. value of
monitored bus access time is exceeded.
Figure 6-9 Front plate of the COR 923C
The mode switch on the front plate can be set to RUN, STOP and TEST.
Please refer to Sections 6.2 and 6.3 for its functions and use.
Indicators and
Controls
Mode Switch
Multiprocessor Operation/Coordinators