Instruction Manual
D103412X012
Viewing Device Variables and Diagnostics
July 2013
231
Travel/Pressure State
Travel/Pressure State (TVL_PRESS.STATE [41.2]) indicates if the instrument is being used for travel control (position
control) or as an I/P (pressure control).
PD Inside Status
PD Inside Status shows the status of Performance Diagnostics.
Protection
Indicates the status of Protection.
Drive Signal
Drive Signal (DRIVE_SIGNAL [53]) indicates the drive signal, as a percentage of the maximum drive available, going to
the I/P converter from the printed wiring board. In most applications, the drive signal ranges between 50% and 75% of
the maximum drive signal.
Temperature
Temperature (TEMPERATURE [48]) displays the internal temperature of the instrument in either degrees Fahrenheit or
Celsius.
Cycle Counter
Cycle Counter (CYCLE_COUNT [73]) records the number of times the travel changes direction. The change in direction
must occur after the deadband has been exceeded before it can be counted as a cycle.
Travel Accumulator
Travel Accumulator (TRAVEL_ACCUM [72]) indicates the total change in travel, in percent of ranged travel. The
accumulator only increments when travel exceeds the deadband. Then the greatest amount of change in one
direction from the original reference point (after the deadband has been exceeded) will be added to the Travel
Accumulator.
Travel Count
Travel Count (TVL_COUNT [43.1]) is the Travel Sensor readback displayed in A/D counts.
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