Instruction Manual Supplement
D103266X012
DVC5000 Digital Valve Controller
May 2018
7
Status Information
Device Status
The Field Device Status Byte is the only status byte defined in the HART protocol. The order and meaning of each of the
eight bits within the byte are fixed by the protocol. This byte is one of the status bytes included with each HART
response. It is not part of the Command 48 data.
Bit
Device Revision
Name of Status Bit
Meaning
7
2, 3
Field Device Malfunction
Set / cleared by the firmware based on self test results.
This bit is set if the pressure, position or temperature
sensors provide invalid readings.
6
2, 3
Configuration Changed
Two such bits exist internally, one for each HART master.
Both copies are set when any variable, HART message,
tag, descriptor or date are changed from HART. Cleared
by command 38, separately for each master. This bit
survives loss of power.
5
2, 3
Cold Start
Set by the firmware whenever a RESET sequence is
executed or at initial device power up. Cleared by the
first HART command.
4
2, 3
More Status
Active when any bit in command 48 is active.
3
2
Not Used
3
Analog Input Fixed
Active if the Instrument Mode of the DVC5000 is in the
“Out Of Service” condition or if the Control Mode of the
DVC5000 is in one of the digital set point modes.
2
2
Analog Input Saturated
Active if the Instrument Mode of the DVC5000 is in the
“Out Of Service” condition or if the Control Mode of the
DVC5000 is in one of the digital set point modes.
3
Not Used
1
2, 3
Internal Sensor Out of Limits
(This bit is named “NonPrimary Variable Out Of Limits”
in the HART documentation for transmitters. It has been
renamed to reflect the fact that these variables are
INTERNAL INPUTS to FIELDVUE products). The firmware
sets this bit when any sensor (pressure, position,
temperature) exceeds its operating limits.
0
2, 3
Loop Current Out of Range
Set when any variable 0 (Analog Input) is saturated.
