Status Information; Device Status - Emerson Fisher FIELDVUE DVC5000 Instruction Manual Supplement

Instruction Manual Supplement
D103266X012

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
7 2, 3
6 2, 3
5 2, 3
4 2, 3
2
3
3
2
2
3
1 2, 3
0 2, 3
Name of Status Bit
Field Device Malfunction
Configuration Changed
Cold Start
More Status
Not Used
Analog Input Fixed
Analog Input Saturated
Not Used
Internal Sensor Out of Limits
Loop Current Out of Range
DVC5000 Digital Valve Controller
Meaning
Set / cleared by the firmware based on self test results.
This bit is set if the pressure, position or temperature
sensors provide invalid readings.
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.
Set by the firmware whenever a RESET sequence is
executed or at initial device power up. Cleared by the
first HART command.
Active when any bit in command 48 is active.
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.
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.
(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.
Set when any variable 0 (Analog Input) is saturated.
May 2018
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