Siemens CPU 948 User Manual

The CP 143 is used for PG
Functions and
Communication via
SINEC H1
If you use the CP 143 for communication via SINEC H1 as well as for
PG functions via the S5 bus, you must make further settings in
addition to those described in Section 3.1 and must take certain special
features into account.
During installation follow the procedure outlined below:
Step Action
1 to 8 Steps 1 to 8 are identical to those described for the alternative "The CP 143 is used exclusively
for PG functions"
9 Program the HDB SYNCHRON (FB 125) call in the start-up OBs OB 20 and OB 22 so
that the CP 143 is synchronized for SINEC H1 communication during
MANUAL/AUTOMATIC COLD RESTART and AUTOMATIC WARM RESTART.
The HDB SYNCHRON should only be called when the interface is actually used, since the
connection to the PG is subsequently terminated and must then be re-established manually on
the PG.
Using pages for
communication via handling
blocks
The following diagram illustrates how the PG functions via the S5 bus
use the pages of the CP 143. The free pages for user HDBs can be
used by CPUs 1 to 4 for communication via SINEC H1.
PG Functions via the S5 Bus
CPU 948 Programming Guide
C79000-G8576-C848-04
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Siemens CPU 948 Specifications

General

Brand	Siemens
Model	CPU 948
Category	Controller
Language	English