
Instruction Manual Supplement
D103783X012
DVC2000 Digital Valve Controller
September 2017
17
Additional Device Status
Command 48 returns 8 bytes of data, with the following status information:
Byte Bit Name of Status Bit Meaning
0
7Flash Integrity Failure 1,2 Active if there is a failure associated with flash ROM (read only
memory).
6Temperature Compensation
Data Integrity Error 1,2 Active if the microprocessor detects a fault in the temperature
compensation data.
5Reference Voltage Failure 1,2 Active if there is a failure associated with the internal voltage
reference.
4Drive Current Failure 1,2 Active when the drive current to the I/P converter is not flowing as
expected.
3Critical NVM Failure 1,2 Active if there is a failure of nonvolatile memory used for
configuration data critical for instrument operation.
2Temperature Sensor Failure 1,2 Active when the instrument temperature sensor fails or the sensor
reading is outside of the range of 60° to 100°C (76° to 212°F).
1Pressure Sensor Failure 2Active if the pressure sensor reading is outside the range of 24.0%
to 125.0% of the calibrated pressure for more than 60 seconds.
0Travel Sensor Failure 1,2 Active if the sensed travel is outside the range of 25.0% to 125.0%
of calibrated travel.
1
7Alert Record Not Empty Alert 2Active when there are 1 or more alerts stored in the alert record.
6AutoTune in Progress 2Active if AutoTune Routine is in progress.
5Calibration In Progress Alert 2Active when calibration is in progress.
4Diagnostics in Progress Alert 2Active when a diagnostic test is in progress.
3Pressure Fallback Active Alert Active when the instrument has detected a problem with the travel
feedback and is now controlling the output like an I/P transducer.
2Custom Characterization Custom Characterization in Effect active if the user-defined Custom
Characterization is enabled.
1Input Characterization Input Characterization in Effect active if any of the user-defined
Characterizations other than “Linear” is enabled.
0Auto Cal in Progress Alert 2Active when auto calibration is in progress.
2
7 Reserved
6 Reserved
5Cycle Counter Alert 2Active if the Cycle Counter exceeds the Cycle Count Alert Point.
4Travel Accumulator High
Alert 2Active if the Travel Accumulator exceeds the Travel Accumulator
Alert Point.
3Instrument Time is Invalid
Alert
Active if the instrument has been powered down since the last time
the instrument clock was set.
2Alert Record Full Alert 2Active when the alert record contains the maximum number of 20
alerts.
1Offline / Failed Alert 2Active if a shutdown alert has put the DVC2000 in a failed state.
0 Reserved
"Reserved" bits are always set to 0.
1. Sets “Field Device Malfunction”.
2. Sets “More Status Available”.
(continued)