Siemens Simatic S7-1500 - Page 396

Instructions
9.3 PID_Temp
PID control
396 Function Manual, 03/2017, A5E35300227-AC
Tag
Data type
Default
Description
SetSubstituteOutput BOOL TRUE Selection of the output value while an error is pending
(State = 5):
• If SetSubstituteOutput = TRUE and ActivateRecover-
Mode = TRUE, the configured substitute output value
SubstituteOutput is output as PID output value as long
as an error is pending.
• If SetSubstituteOutput = FALSE and ActivateRecov-
erMode = TRUE, the actuator remains at the current
PID output value as long as an error is pending.
• If ActivateRecoverMode = FALSE, SetSubstituteOut-
put is not effective.
• If SubstituteOutput is invalid (ErrorBits = 0020000h),
the substitute output value cannot be output. In this
case, the low limit of the PID output value for heating
(Config.Output.Heat.PidLowerLimit) is used as PID
output value.
PhysicalUnit INT 0 Unit of measurement of the process value and setpoint,
e.g., ºC, or ºF.
This parameter is used for display in the editors and does
not influence the control algorithm.
PhysicalQuantity INT 0 Physical quantity of the process value and setpoint, e.g.,
temperature.
This parameter is used for display in the editors and does
not influence the control algorithm.
ActivateRecoverMode BOOL TRUE The ActivateRecoverMode tag determines the reaction to
error.
Warning DWORD 0 The Warning tag shows the warnings since Reset = TRUE
or ErrorAck =TRUE. Warning is retentive.
Progress REAL 0.0 Progress of current tuning phase as a percentage (0.0 -
100.0)
CurrentSetpoint REAL 0.0 CurrentSetpoint always displays the currently effective
setpoint. This value is frozen during tuning.
CancelTuningLevel REAL 10.0 Permissible fluctuation of setpoint during tuning. Tuning is
not canceled until:
• Setpoint > CurrentSetpoint + CancelTuningLevel
or
• Setpoint < CurrentSetpoint - CancelTuningLevel