Siemens SIMATIC S7-1200 Function Manual page 522

Instructions
9.5 Polyline
ErrorBits Description
( DW#16#...)
0008_0000 Note that all tags in the UserData and WorkingData structures are not retentive. These tags are initial-
ized with the start values after each change of operating state of the CPU from STOP to RUN.
The error bit at the Error parameter is cleared and enable output ENO is set to TRUE again, when
The Validate parameter is set to TRUE while the Reset parameter is set to FALSE and the five con-
•
ditions for UserData named above are met.
or
When Polyline is executed for the first time after the change of operating state of the CPU from
•
STOP to RUN, the Reset parameter is set to FALSE and the five conditions for UserData named
above are met.
or
The Reset parameter is set to TRUE.
•
If the five conditions for UserData named above are met and the following conditions are met, FB Pol-
yline outputs the interpolation value at the output again.
The Validate parameter is set to TRUE while the Reset parameter is set to FALSE.
•
or
When Polyline is executed for the first time after the change of operating state of the CPU from RUN
•
to STOP, the Reset parameter is set to FALSE.
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Function Manual, 03/2017, A5E35300227-AC
PID control