Emerson Fisher™ FIELDVUE™ DVC2000 Digital Valve Controller Restart Control Mode

Restart Control Mode

Restart Control Mode (Restart Cont Mode) lets you choose which operating mode you want the

instrument to be in after a restart. Follow the prompts on the handheld communicator display

to define the restart control mode as Resume Last, Analog or Digital.

Restarting the Instrument

Restart resets the instrument in the same manner as when power to the instrument is

interrupted. When Restart is issued, all of the newly entered configuration variables become

active. Otherwise, they may not take effect until the instrument is placed In Service.

Burst Mode

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. A handheld communicator or control system may request any of the

information that is normally available, even while the instrument is in burst mode. Between

each burst mode transmission sent by the instrument, a short pause allows the handheld

communicator or control system to initiate a request. The instrument receives the request,

processes the response message and then continues “bursting” the burst mode data.

There are four burst mode commands. Command 3 is recommended for use with the

Rosemount™ 333 HART Tri-Loop™ HART-to-analog signal converter. The other three are not

used at this time.