Fisher FIELDVUE DVC2000 Instruction Manual Supplement page 17

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