Siemens S5-135U/155U System Manual page 268

Multiprocessor Operation/Coordinators
The individual actions are explained in more detail in the following.
Step 1
Setting the number of occupied CPU slots on the coordinator:
Coded by inserting only one DIL switch S1.4, S1.5 or S1.6 in the front
plate recess: (see Figure 6-2)
1)
Step 2 Setting the communication flag areas:
you use
communication flag
areas on CPs (please
consult the relevant
manuals),
6-6
923A Coordinator
Number of CPUs used
2
3
4
923C Coordinator
DIL S. on off Effect
S1.1 x
S1.2 x
S1.3 x Enable test mode
S1.4 x No. of occupied CPU slots = 2
S1.5 x No. of occupied CPU slots = 3
S1.6 x No. of occupied CPU slots = 4
Setting when delivered
IF ...
you must mask out these areas (blocks) on the
coordinator without fail, to avoid duplicated
addressing of the communication memory.
The 256 communication flag bytes can be masked
out in groups of 32. You do this by removing
jumpers at coding socket EP 7 on Coordinator A
(see Figure 6-1 for location) or EP 60 on
Coordinator C (see Figure 6-2).
Jumper(s) at EP 62
1)
7 - 10; 8 - 9
7 -10
8 - 9
–
–
1)
THEN ...
System Manual
C79000-G8576-C199-06