Blocks and Their Functions S5-95F
9.3.5 Transferring Changed DB1 Parameters to the S5-95F Programmable
Controller
DB1 determines to a limited extent the system parameters of the S5-95F. The S5-95F reads DB1
only once during startup.
If you assign new parameters to DB1 (in the test mode), then the S5-95F must read DB1, as
otherwise the changed parameters do not become valid. You must therefore carry out a cold restart
on the S5-95F.
To carry out a cold restart on the S5-95F and to accept the changed parameters of DB1 in the S5-
95F, proceed as follows:
• Switch the power off and then on or
• Switch from RUN to STOP and again to RUN.
If you do not assign parameters in DB1, then the S5-95F generates a default DB1, where it also
enters the current I/O configuration. The default settings of DB1 are selected so that the S5-95F can
assume a status as safe as possible. With this default DB1, the S5-95F goes to RUN.
If you assign parameters in DB1, then the S5-95F checks this DB1. If the S5-95F does not
recognize any syntax errors in your DB1, it goes to RUN.
If the S5-95F recognizes an error in your DB1 (parameter error), then the S5-95F goes to STOP
and writes a corresponding error message to the system event data block DB254 (see Chapter 15).
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EWA 4NEB 812 6210-02
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