Instructions
9.1 PID_Compact
PID control
Function Manual, 03/2017, A5E35300227-AC
273
If several warnings are pending simultaneously, the values of the Warning tag are displayed
with binary addition. The display of warning 0003h, for example, indicates that the warnings
0001h and 0002h are pending simultaneously.
The point of inflection was not found during pretuning.
The setpoint was limited to the configured limits.
0008 Not all the necessary controlled system properties were defined for the selected method of calculation.
Instead, the PID parameters were calculated using the TIR.TuneRule = 3 method.
The operating mode could not be changed because Reset = TRUE or ManualEnable = TRUE.
0020 The cycle time of the calling OB limits the sampling time of the PID algorithm.
Improve results by using shorter OB cycle times.
The process value exceeded one of its warning limits.
Invalid value at Mode. The operating mode is not switched.
The manual value was limited to the limits of the controller output.
The specified rule for tuning is not supported. No PID parameters are calculated.
The substitute output value cannot be reached because it is outside the output value limits.
The following warnings are deleted as soon as the cause is eliminated:
● 0001h
● 0004h
● 0008h
● 0040h
● 0100h
All other warnings are cleared with a rising edge at Reset or ErrorAck.
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