Mode And Protection; Mode - Fisher FIELDVUE DVC6200 Instruction Manual

Instruction Manual
D103409X012

Mode and Protection

Mode

Instrument Mode
Field Communicator
Configure > Detailed Setup > Mode and Protection > Instrument Mode (1‐2‐1‐1)
Instrument Mode allows you to either take the instrument Out Of Service or place it In Service. Taking the instrument
Out Of Service allows you to perform instrument calibration and also allows you to change setup variables that affect
control, provided the calibration/configuration protection is properly set. See Setting Protection.
Note
Some changes that require the instrument to be taken Out Of Service will not take effect until the instrument is placed back In
Service or the instrument is restarted.
Control Mode
Field Communicator
Configure > Detailed Setup > Mode and Protection > Instrument Mode (1‐2‐1‐2)
Control Mode lets you define where the instrument reads its set point. Follow the prompts on the Field Communicator
display to choose one of the following control modes: Analog or Digital.
Choose Analog if the instrument is to receive its set point over the 4‐20 mA loop. Normally the instrument control
mode is Analog.
Choose Digital if the instrument is to receive its set point digitally, via the HART communications link.
A third mode, Test, is also displayed. Normally the instrument should not be in the Test mode. The Field
Communicator automatically switches to this mode whenever it needs to stroke the valve during calibration or stroke
valve, for example. However, if you abort from a procedure where the instrument is in the Test mode, it may remain in
this mode. To take the instrument out of the Test mode, select Control Mode then select either Analog or Digital.
Restart Control Mode
Field Communicator Configure > Detailed Setup > Mode and Protection > Restart Control Mode (1‐2‐1‐3)
Restart Control Mode lets you choose which operating mode you want the instrument to be in after a restart. Follow
the prompts on the Field Communicator display to define the restart control mode as Resume Last, Analog, or Digital.
Burst Mode
Field Communicator Configure > Detailed Setup > Mode and Protection > Burst Mode (1‐2‐1‐4)
Enabling burst mode provides continuous communication from the digital valve controller. Burst mode applies only to
the transmission of burst mode data (analog input, travel target, pressure, and travel) and does not affect the way
other data is accessed.
Access to information in the instrument is normally obtained through the poll/response of HART communication. The
Field Communicator or the control system may request any of the information that is normally available, even while
Hot Key > Instrument Mode (Hot Key‐1)
Hot Key > Instrument Mode (Hot Key‐2)
Detailed Setup
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