Siemens Simatic S7-1500 - Page 425

Instructions
9.3 PID_Temp
PID control
Function Manual, 03/2017, A5E35300227-AC
425
Tag
Data type
Default
Description
Retain.CtrlParams.Heat
.PWeighting
REAL 1.0 Active weighting of the proportional action for heating
The proportional action may weaken with changes to the
setpoint.
Values from 0.0 to 1.0 are applicable.
• 1.0: Proportional action for setpoint change is fully
effective
• 0.0: Proportional action for setpoint change is not ef-
fective
The proportional action is always fully effective when the
process value is changed.
Heat.PWeighting is retentive.
1.0 ≥ Heat.PWeighting ≥ 0.0
Retain.CtrlParams.Heat
.DWeighting
REAL 1.0 Active weighting of the derivative action for heating
The derivative action may weaken with changes to the
setpoint.
Values from 0.0 to 1.0 are applicable.
• 1.0: Derivative action is fully effective upon setpoint
change
• 0.0: Derivative action is not effective upon setpoint
change
The derivative action is always fully effective when the
process value is changed.
Heat.DWeighting is retentive.
1.0 ≥ Heat.DWeighting ≥ 0.0
Retain.CtrlParams.Heat.Cycle REAL 1.0 Active sampling time of the PID algorithm for heating in
seconds
CtrlParams.Heat.Cycle is calculated during tuning and
rounded to an integer multiple of CycleTime.Value.
If Config.Output.Heat.PwmPeriode = 0.0, Heat.Cycle is
used as period duration of the pulse width modulation for
heating.
If Config.Output.Cool.PwmPeriode = 0.0 and Config
.AdvancedCooling = FALSE, Heat.Cycle is used as period
duration of the pulse width modulation for cooling.
Heat.Cycle is retentive.
100000.0 ≥ Heat.Cycle > 0.0