The following section describes how you can use the "manual mode" operating mode in the commissioning window of the "PID_Compact" technology object. Manual mode is also possible when an error is pending.
Requirement
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The "PID_Compact" instruction is called in a cyclic interrupt OB.
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An online connection to the CPU has been established and the CPU is in "RUN" mode.
Procedure
Use "Manual mode" in the commissioning window if you want to test the controlled system by specifying a manual value. To define a manual value, proceed as follows:
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Click the "Start" icon.
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Select the "Manual mode" check box in the "Online status of controller" area.
PID_Compact operates in manual mode. The most recent current output value remains in effect.
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Enter the manual value in the "Output" field as a % value.
icon.Result
The manual value is written to the CPU and immediately goes into effect.
Clear the "Manual mode" check box if the output value is to be specified again by the PID controller. The switchover to automatic mode is bumpless.