Output Parameters Of Pid_3Step V2 - Siemens SIMATIC S7-1200 Function Manual

Instructions
9.2 PID_3Step
9.2.4.5

Output parameters of PID_3Step V2

Table 9- 8 Output parameters of PID_3Step V2
Parameter
ScaledInput
ScaledFeedback
Output_UP
Output_DN
Output_PER
SetpointLimit_H
SetpointLimit_L
InputWarning_H
InputWarning_L
318
Data type Default
REAL 0.0
REAL 0.0
BOOL FALSE
BOOL FALSE
INT 0
BOOL FALSE
BOOL FALSE
BOOL FALSE
BOOL FALSE
Description
Scaled process value
Scaled position feedback
For an actuator without position feedback, the position of the
actuator indicated by ScaledFeedback is very imprecise.
ScaledFeedback may only be used for rough estimation of
the current position in this case.
Digital output value for opening the valve
If Config.OutputPerOn = FALSE, the Output_UP parameter is
used.
Digital output value for closing the valve
If Config.OutputPerOn = FALSE, the Output_DN parameter
is used.
Analog output value
If Config.OutputPerOn = TRUE, Output_PER is used.
Use Output_PER if you are using a valve as actuator which is
triggered via an analog output and controlled with a continu-
ous signal, e.g. 0...10 V or 4...20 mA.
The value at Output_PER corresponds to the target position
of the valve, e.g. Output_PER = 13824, when the valve is to
be opened by 50%.
If SetpointLimit_H = TRUE, the absolute setpoint high limit is
reached (Setpoint ≥ Config.SetpointUpperLimit).
The setpoint is limited to Config.SetpointUpperLimit .
If SetpointLimit_L = TRUE, the absolute setpoint low limit has
been reached (Setpoint ≤ Config.SetpointLowerLimit).
The setpoint is limited to Config.SetpointLowerLimit .
If InputWarning_H = TRUE, the process value has reached
or exceeded the warning high limit.
If InputWarning_L = TRUE, the process value has reached or
fallen below the warning low limit.
Function Manual, 03/2017, A5E35300227-AC
PID control