Instructions
9.1 PID_Compact
PID control
Function Manual, 03/2017, A5E35300227-AC
253
Output parameters of PID_Compact V2
Table 9- 2 Output parameters of PID_Compact V2
The "Output", "Output_PER", and "Output_PWM" outputs can be used concurrently.
Output value in REAL format
Output_PER INT 0 Analog output value
Output_PWM BOOL FALSE Pulse-width-modulated output value
The output value is formed by by variable On and Off
SetpointLimit_H BOOL FALSE If SetpointLimit_H = TRUE, the absolute setpoint high limit
is reached (Setpoint ≥ Config.SetpointUpperLimit).
The setpoint is limited to Config.SetpointUpperLimit .
SetpointLimit_L BOOL FALSE If SetpointLimit_L = TRUE, the absolute setpoint low limit
has been reached (Setpoint ≤ Config.SetpointLowerLimit).
The setpoint is limited to Config.SetpointLowerLimit .
InputWarning_H BOOL FALSE If InputWarning_H = TRUE, the process value has reached
or exceeded the warning high limit.
InputWarning_L BOOL FALSE If InputWarning_L = TRUE, the process value has reached
or fallen below the warning low limit.
State INT 0 The State parameter (Page 265) shows the current operat-
ing mode of the PID controller. You can change the operat-
ing mode using the input parameter Mode and a rising
edge at ModeActivate.
• State = 0: Inactive
• State = 1: Pretuning
• State = 2: Fine tuning
• State = 3: Automatic mode
• State = 4: Manual mode
• State = 5: Substitute output value with error monitoring
Error BOOL FALSE If Error = TRUE, at least one error message is pending in
this cycle.
ErrorBits DWORD DW#16#0 The ErrorBits parameter (Page 269) shows which error
messages are pending. ErrorBits is retentive and is reset
upon a rising edge at Reset or ErrorAck.
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