Siemens Simatic S7-1500 - Page 421

Instructions
9.3 PID_Temp
PID control
Function Manual, 03/2017, A5E35300227-AC
421
Tag
Data type
Default
Description
PIDSelfTune.TIR.State INT 0 The TIR.State tag indicates the current phase of "fine
tuning":
• State = 0: Initialize fine tuning
• State = 100: Calculate standard deviation for heating
• State = 200: Calculate standard deviation for cooling
• State = 300: Attempting to reach setpoint for heating
with two-step control using heating
• State = 400: Attempting to reach setpoint for cooling
with two-step control using cooling
• State = 500: Attempting to reach setpoint for heating
with PID control
• State = 600: Attempting to reach setpoint for cooling
with PID control
• State = 700: Calculate standard deviation for heating
• State = 800: Calculate standard deviation for cooling
• State = 900: Determine oscillation and calculate pa-
rameters for heating
• State = 1000: Determine oscillation and calculate pa-
rameters for cooling
• State = 9900: Fine tuning successful
• State = 1: Fine tuning not successful
PIDSelfTune.TIR.ProcPar-
HeatOk
BOOL FALSE TRUE: The calculation of the process parameters for fine
tuning heating was successful.
This tag is set during tuning.
It must be met for calculation of the PID parameters for
heating.
PIDSelfTune.TIR.ProcPar-
CoolOk
BOOL FALSE TRUE: The calculation of the process parameters for fine
tuning cooling was successful.
This tag is set during tuning.
It must be met for calculation of the PID parameters for
cooling.