Siemens SIMATIC S7-1500T Function Manual

Instructions
9.2 PID_3Step
PID control
Function Manual, 03/2017, A5E35300227-AC
321
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
Data type
Default
Description
ManualUpInternal BOOL FALSE 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.
ManualDnInternal BOOL FALSE 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.
ActivateRecoverMode BOOL TRUE The ActivateRecoverMode V2 (Page 338) tag determines
the reaction to error.
RunModeByStartup BOOL TRUE 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.
LoadBackUp BOOL FALSE 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.
PhysicalUnit INT 0
Unit of measurement of the process value and setpoint, e.g.,
ºC, or ºF.
PhysicalQuantity INT 0 Physical quantity of the process value and setpoint, e.g.,
temperature
ErrorBehaviour BOOL FALSE 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.
Warning DWORD DW#16#0 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.

Siemens SIMATIC S7-1500T Specifications

General

Brand	Siemens
Model	SIMATIC S7-1500T
Category	Controller
Language	English