Siemens SIMATIC S7-1200 - Page 620

Technology instructions
10.2 PID control
S7-1200 Programmable controller
620 System Manual, V4.2, 09/2016, A5E02486680-AK
ErrorBit (DW#16#...)
Description
0200
2, 3
Invalid value at the Input parameter: Value has an invalid number format.
0400
2, 3
Calculation of the output value failed. Check the PID parameters.
0800
1, 2
Sampling time error: PID_Temp is not called within the sampling time of the
cyclic interrupt OB.
1000
2, 3
Invalid value at the Setpoint parameter: Value has an invalid number format.
10000 Invalid value at the ManualValue parameter: Value has an invalid number
format.
Note: If ActivateRecoverMode = TRUE before the error occurred,
PID_Temp uses SubstituteOutput as the output value. As soon as you as-
sign a valid value in the ManualValue parameter, PID_Temp uses it as the
output value.
20000 Invalid value at the SubstituteValue tag: Value has an invalid number for-
mat.
PID_Temp uses the output value low limit as the output value.
Note: If automatic mode was active before the error occurred, Acti-
vateRecoverMode = TRUE, and the error is no longer pending, PID_Temp
switches back to automatic mode.
40000 Invalid value at the Disturbance parameter: Value has an invalid number
format.
Note: If automatic mode was active and ActivateRecoverMode = FALSE
before the error occurred, Disturbance is set to zero. PID_Temp remains in
automatic mode.
Note: If pre-tuning or fine tuning mode was active and ActivateRecover-
Mode = TRUE before the error occurred, PID_Temp switches to the operat-
ing mode that is saved in the Mode parameter. If Disturbance in the current
phase has no effect on the output value, tuning is not canceled.
200000 Error with master in the cascade. Slaves are not in automatic mode or have
a substitute setpoint enabled, preventing tuning of the master.
400000 The PID controller does not permit pretuning for heating while cooling is
active.
800000 The process value must be close to the setpoint in order to start pretuning
for cooling.
1000000 Error starting tuning. “Heat.EnableTuning” and “Cool.EnableTuning” are not
set or do not match the configuration.
2000000
Pretuning for cooling requires successful pretuning for heating.