2-9
Chapter 2. Outline of Functions
The transitions between operation modes are shown below.
AT stopped
AT running
AUTO/MANUAL
switching
AUTO/MANUAL
switching
RUN + AUTO mode
AT stopped
RUN + MANUAL mode
AT stopped
READY + MANUAL mode
AT stopped
READY + AUTO mode
RUN/READY
switching
RUN/READY
switching
RUN: The process is being controlled.
READY: The process is not being controlled.
AUTO: Automatic operation (this device automatically determines the MV)
MANUAL: Manual operation (the user can change the MV manually)
AT: Auto tuning (this device automatically sets the PID constants by generating limit cycles)
2 - 3 Operation Modes
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