Pid_3Step V1 Static Tags - Siemens SIMATIC S7-1200 Function Manual

Instructions
9.2 PID_3Step
9.2.5.5

PID_3Step V1 static tags

You must not change tags that are not listed. These are used for internal purposes only.
Table 9- 12 PID_3Step V1 static tags
Tag
ActivateRecoverMode
RunModeByStartup
PhysicalUnit
PhysicalQuantity
ErrorBehaviour
Warning
SavePosition
CurrentSetpoint
Progress
Config.InputPerOn
Config.OutputPerOn
Config.LoadBackUp
354
Data type Default Description
BOOL TRUE The ActivateRecoverMode tag (Page 372) determines the reaction
to error.
BOOL TRUE Activate Mode after CPU restart
If RunModeByStartup = TRUE, the controller returns to the last
active operating mode after a CPU restart.
If RunModeByStartup = FALSE, the controller remains inactive
after a CPU restart.
INT 0 Unit of measurement of the process value and setpoint, e.g., ºC, or
ºF.
INT 0 Physical quantity of the process value and setpoint, e.g., tempera-
ture.
INT 0 If ErrorBehaviour = 0 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 = 1 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.
•
•
•
DWORD DW#16# The Warning tag (Page 361) displays the warnings generated
0 since a Reset or since the last operating mode switchover.
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 ex-
ample, point of inflection not found) remain and are deleted like
errors.
REAL 0.0 Substitute output value
If ErrorBehaviour = 1 and an error occurs, the actuator moves to a
safe position for the plant and only then switches to "Inactive"
mode.
REAL 0.0 Currently active setpoint. This value is frozen at the start of tuning.
REAL 0.0 Progress of tuning as a percentage (0.0 - 100.0)
BOOL TRUE If InputPerOn = TRUE, the Input_PER parameter is used. If Input-
PerOn = FALSE, the Input parameter is used.
BOOL FALSE If OutputPerOn = TRUE, the Output_PER parameter is used. If
OutputPerOn = FALSE, the Ouput_UP and Output_DN parameters
are used.
BOOL FALSE If LoadBackUp = TRUE, the last set of PID parameters is reloaded.
The set was saved prior to the last tuning. LoadBackUp is auto-
matically set back to FALSE.
2000h: Invalid value at Feedback_PER parameter.
4000h: Invalid value at Feedback parameter.
8000h: Error during digital position feedback.
Function Manual, 03/2017, A5E35300227-AC
PID control