6.5
923C Coordinator Module
6.5.1
Technical Description
This section contains information on the application, design and
principle of operation of the 923C coordinator.
Application
The 923C coordinator module can be used in the S5-135U/155U
programmable controller and in the EU S5-185U expansion unit.
There are three main task areas which are, to some extent, independent:
••
Bus arbitration (only in the central controller)
To coordinate multiprocessor operation, i.e. the simultaneous use
of two to four CPUs (CPU 948, CPU 928B, CPU 928, CPU 922).
••
Communication memory (only in the central controller)
For the interchange of data between CPUs via communication
flags and data blocks.
••
Central programmer connection (PG MUX)
For the programming and startup of up to 8 modules via one PG
connection.
To program a programmable controller via the SINEC H1 or
SINEC L1/L2 bus, connect the SINEC CP to the PG connection of
the COR C using the 725 cable ("swing" cable).
923C Coordinator Module
System Manual
6 - 20
C79000-B8576-C199-03
