Siemens SIMATIC S7-1200

Instructions
9.3 PID_Temp
PID control
Function Manual, 03/2017, A5E35300227-AC
375
9.2.5.11
Tag SUT.State V1
SUT.State
Name
Description
0
SUT_INIT
Initialize pretuning
50
SUT_TPDN
Determine start position without position feedback
100
SUT_STDABW
Calculate the standard deviation
200 SUT_GET_POI Find the point of inflection
300
SUT_GET_RISETM
Determine the rise time
9900
SUT_IO
Pretuning successful
1
SUT_NIO
Pretuning not successful
9.2.5.12
Tag TIR.State V1
TIR.State
Name
Description
-100
TIR_FIRST_SUT
Fine tuning is not possible. Pretuning will be executed first.
0
TIR_INIT
Initialize fine tuning
200
TIR_STDABW
Calculate the standard deviation
300
TIR_RUN_IN
Attempt to reach the setpoint with the maximum or minimum output value
400 TIR_CTRLN Attempt to reach the setpoint with the existing PID parameters
(if pretuning has been successful)
500
TIR_OSZIL
Determine oscillation and calculate parameters
9900
TIR_IO
Fine tuning successful
1
TIR_NIO
Fine tuning not successful