Using PID_Compact
4.2 PID_Compact V2
PID control
90 Function Manual, 03/2017, A5E35300227-AC
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.
● The "PID_Compact" instruction is called in a cyclic interrupt OB.
● An online connection to the CPU has been established and the CPU is in the "RUN"
mode.
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, follow these steps:
1. Click the "Start" icon.
2. 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.
3. Enter the manual value in the "Output" field as a % value.
4. Click the
icon.
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.
Parameters State and Mode V2 (Page 265)
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