Preface On Test Program - Siemens SIMATIC S5 Manual

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Preface on Test Program

The chosen example shows how parameters could be assigned to a module.
The example with indirect parameter assignment covers all possible modes, i.e. the complete
range of commands, whereas the example for direct parameter assignment is limited to the
following operating modes:
Command
PA – assign parameters
IW – read actual value
LE – read the controller parameters
AE – change the controller parameters
AS – change setpoints
AB/HB – switch over to automatic/manual operation
S1/S2 – switch over setpoints
All the required blocks for receiving data are present and installed.
The example uses data blocks with the following designations:
DB-A
DB-B
DB-C
DB-A'
DB-C'
The function block FB 62 in the test program operates with direct parameter assignment, FB 63
with indirect parameter assignment. During indirect parameter assignment the parameters are
read from the data block DB 162.
In a cold restart the IP 244 is assigned new parameters using the command KS (cold restart).
In both "automatic warm restart" and "manual warm restart", the command PA (assign
parameters) is executed.
IP244
C79000–B8576–C862–02
: DB 162
: DB 163
: DB 164
: DB 172
: DB 173
Test Program
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