Siemens SIMATIC S7-1200 Function Manual page 441

ErrorBits Description
( DW#16#...)
0040000 Invalid value at Disturbance parameter. Value has an invalid number format.
If automatic mode was active and ActivateRecoverMode = TRUE before the error occurred, Disturbance
is set to zero. PID_Temp remains in automatic mode.
If pretuning or fine tuning mode was active before the error occurred and ActivateRecoverMode =
TRUE, PID_Temp switches to the operating mode that is saved in the Mode parameter. If Disturbance
in the current phase has no effect on the output value, tuning is not be canceled.
0200000 Error in master in the cascade: Slaves are not in automatic mode or have activated substitute setpoint
and prevent tuning of the master.
If ActivateRecoverMode = TRUE before the error occurred, PID_Temp cancels the tuning and switches
to the operating mode that is saved in the Mode parameter.
0400000 Pretuning heating is not permitted while cooling is active.
If ActivateRecoverMode = TRUE before the error occurred, PID_Temp cancels the tuning and switches
to the operating mode that is saved in the Mode parameter.
0800000 The process value must be close to the setpoint to start pretuning cooling.
If ActivateRecoverMode = TRUE before the error occurred, PID_Temp cancels the tuning and switches
to the operating mode that is saved in the Mode parameter.
1000000 Error at start of tuning: Heat.EnableTuning and Cool.EnableTuning are not set or do not match the con-
figuration.
If ActivateRecoverMode = TRUE before the error occurred, PID_Temp cancels the tuning and switches
to the operating mode that is saved in the Mode parameter.
2000000 Pretuning cooling requires successful pretuning heating.
If ActivateRecoverMode = TRUE before the error occurred, PID_Temp cancels the tuning and switches
to the operating mode that is saved in the Mode parameter.
4000000 Error at start of fine tuning: Heat.EnableTuning and Cool.EnableTuning must not be set simultaneously.
If ActivateRecoverMode = TRUE before the error occurred, PID_Temp cancels the tuning and switches
to the operating mode that is saved in the Mode parameter.
8000000 Error during calculation of the PID parameters resulted in invalid parameters.
The invalid parameters are discarded and the original PID parameters are retained unchanged.
We can distinguish between the following cases:
If automatic mode was active before the error occurred and ActivateRecoverMode = TRUE,
•
PID_Temp remains in automatic mode.
If manual mode was active before the error occurred and ActivateRecoverMode = TRUE, PID_Temp
•
remains in manual mode.
If pretuning or fine tuning mode was active before the error occurred and ActivateRecoverMode =
•
TRUE, PID_Temp switches to the operating mode that is saved in the Mode parameter.
PID control
Function Manual, 03/2017, A5E35300227-AC
Instructions
9.3 PID_Temp
441