Static Tags Of Pid_3Step V2 - Siemens SIMATIC S7-1200 Function Manual

9.2.4.7

Static tags of PID_3Step V2

You must not change tags that are not listed. These are used for internal purposes only.
Tag
ManualUpInternal
ManualDnInternal
ActivateRecoverMode
RunModeByStartup
LoadBackUp
PhysicalUnit
PhysicalQuantity
ErrorBehaviour
Warning
PID control
Function Manual, 03/2017, A5E35300227-AC
Data type Default
BOOL FALSE
BOOL FALSE
BOOL TRUE
BOOL TRUE
BOOL FALSE
INT 0
INT 0
BOOL FALSE
DWORD DW#16#0
Description
In manual mode, each rising edge opens the valve by 5% of
the total control range or for the duration of the minimum
motor transition time. ManualUpInternal is only evaluated if
you are not using Output_PER or a position feedback. This
tag is used in the commissioning dialog.
In manual mode, every rising edge closes the valve by 5%
of the total control range or for the duration of the minimum
motor transition time. ManualDnInternal is only evaluated if
you are not using Output_PER or position feedback. This
tag is used in the commissioning dialog.
The ActivateRecoverMode V2 (Page 338) tag determines
the reaction to error.
Activate operating mode at Mode parameter after CPU
restart
If RunModeByStartup = TRUE, PID_3Step starts in the
operating mode saved in the Mode parameter after CPU
startup.
If RunModeByStartup = FALSE, PID_3Step remains in "In-
active" mode after CPU startup.
If LoadBackUp = TRUE, the last set of PID parameters is
reloaded. The set was saved prior to the last tuning. Load-
BackUp is automatically set back to FALSE.
Unit of measurement of the process value and setpoint, e.g.,
ºC, or ºF.
Physical quantity of the process value and setpoint, e.g.,
temperature
If ErrorBehaviour = FALSE and an error has occurred, the
valve stays at its current position and the controller switches
directly to "Inactive" or "Error monitoring" mode.
If ErrorBehaviour = TRUE and an error occurs, the actuator
moves to the substitute output value and only then switches
to "Inactive" or "Error monitoring" mode.
If the following errors occur, you can no longer move the
valve to a configured substitute output value.
2000h: Invalid value at Feedback_PER parameter.
•
4000h: Invalid value at Feedback parameter.
•
8000h: Error during digital position feedback.
•
20000h: Invalid value at SavePosition tag.
•
The Warning tag (Page 330) shows the warnings since
Reset = TRUE or ErrorAck =TRUE. Warning is retentive.
Cyclic warnings (for example, process value warning) are
shown until the cause of the warning is removed. They are
automatically deleted once their cause has gone. Non-cyclic
warnings (for example, point of inflection not found) remain
and are deleted like errors.
Instructions
9.2 PID_3Step
321