Siemens Simatic S7-1500 - Page 415

Instructions
9.3 PID_Temp
PID control
Function Manual, 03/2017, A5E35300227-AC
415
Tag
Data type
Default
Description
PIDSelfTune.SUT.State INT 0 The SUT.State tag indicates the current phase of pretun-
ing:
• State = 0: Initialize pretuning
• State = 100: Calculate standard deviation for heating
• State = 200: Calculate standard deviation for cooling
• State = 300: Determine point of inflection for heating
• State = 400: Determine point of inflection for cooling
• State = 500: Set heating to setpoint after reaching
point of inflection
• State =
600: Set cooling to setpoint after reaching point
of inflection
• State = 700: Compare efficiency of the heating actua-
tor and cooling actuator
• State = 800: Heating and cooling activated
• State = 900: Cooling activated
• State = 1000: Determine delay time after switching off
heating
• State = 9900: Pretuning successful
• State = 1: Pretuning not successful
PIDSelfTune.SUT.ProcPar-
HeatOk
BOOL FALSE TRUE: The calculation of the process parameters for pre-
tuning heating was successful.
This tag is set during tuning.
It must be TRUE for calculation of the PID parameters for
heating.
PIDSelfTune.SUT.ProcPar-
CoolOk
BOOL FALSE TRUE: The calculation of the process parameters for pre-
tuning cooling was successful.
This tag is set during tuning.
It must be TRUE for calculation of the PID parameters for
cooling.