Siemens S7-1200 System Manual page 431
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Also See for S7-1200:
- Operating instructions manual (132 pages) ,
- Programming manualline (74 pages) ,
- Manual (46 pages)
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Parameter and type
Output_DN
OUT
Output_PER
OUT
SetpointLimitH
OUT
SetpointLimitL
OUT
InputWarningH
OUT
InputWarningL
OUT
State
OUT
Error
OUT
ErrorBits
OUT
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
Data type
Description
Bool
Digital output value for closing the valve. (Default value: FALSE)
If Config.OutputPerOn = FALSE, the parameter Output_DN is used.
Word
Analog output value.
If Config.OutputPerOn = TRUE, the parameter Output_PER is used.
Bool
Setpoint high limit. (Default value: FALSE)
If SetpointLimitH = TRUE, the absolute upper limit of the setpoint is
reached (Setpoint ≥ Config.SetpointUpperLimit).
Note: The setpoint is limited to (Setpoint ≥ Config.SetpointUpperLimit).
Bool
Setpoint low limit. (Default value: FALSE)
If SetpointLimitL = TRUE, the absolute lower limit of the setpoint is
reached (Setpoint ≥ Config.SetpointLowerLimit).
Note: The setpoint is limited to (Setpoint ≥ Config.SetpointLowerLimit).
Bool
If InputWarningH = TRUE, the input value has reached or exceeded the
warning high limit. (Default value: FALSE)
Bool
If InputWarningL = TRUE, the input value has reached or exceeded the
warning low limit. (Default value: FALSE)
Int
Current operating mode of the PID controller. (Default value: 0)
You can change the operating mode using the Mode input parameter
and a rising edge at ModeActivate:
State = 0: Inactive
•
State = 1: Pre-tuning
•
State = 2: Manual fine tuning
•
State = 3: Automatic mode
•
State = 4: Manual mode
•
State = 5: Substitute output value approach
•
State = 6: Transition time measurement
•
State = 7: Error monitoring
•
State = 8: Substitute output value approach with error monitoring\
•
State = 10: Manual mode without end stop signals
•
Bool
If Error = TRUE, at least one error message is pending. (Default value:
FALSE)
Note: The Error parameter in V1.x PID was the ErrorBits field that
contained the error codes. It is now a Boolean flag indicating that an
error has occurred.
DWord
The PID_3Step instruction ErrorBits parameters table (Page 435)
defines the error messages that are pending. (Default value:
DW#16#0000 (no error)). ErrorBits is retentive and is reset upon a
rising edge at Reset or ErrorAck.
Note: In V1.x, the ErrorBits parameter was defined as the Error
parameter and did not exist.
Technology instructions
9.2 PID control
431
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