Non-Critical Diagnostics; Table 16 - Hart Non-Critical Diagnostic Messages - Honeywell SLG 700 User Manual

6.2.2

Non-Critical Diagnostics

Table 16 lists and describes the HART non-critical diagnostics.
Name (DTM/DD)
Field Background Not
set
Field Background Not
compatible
Field background Load
error
Device in Power up
mode
Sensor Failure
Sensor ET Over
Temperature
Interface Distance is in
Higher Blocking Zone
Revision 5

Table 16 - HART Non-Critical Diagnostic Messages

Description (Cause)
Field background is enabled before
capture.
Field background was taken with a
different set of mounting configuration
than the current configuration.
Field background could not be loaded
from non-volatile memory.
This status bit will set at power mode
& it will reset once device found valid
surface/Interface Level.
This is a roll-up status bit that is set
when any of the following non critical
status conditions are present:

Sensor Electronic Over
Temperature

Distance in blocking higher zone

Distance in blocking lower zone

Sensor Characterization Status

Sensor Calibration Status
Sensor module temperature
exceeded the operating temperature
range specification which is -40 to
+85 Degrees Celsius.
This indicates that interface reflection
has been tracked into the upper zone
near the Reference Plane where
measurements are not accurate.
SLG 700 Series HART Option User's Manual
Resolution (Steps to take)
Capture a new field background and
perform a soft or hard reset.
Capture a new field background and
perform a soft or hard reset.
Capture a new field background and
perform a soft or hard reset.
If the bit is not reset then the check the
echo curve for valid surface or Interface
peaks.
Refer to each condition later in this
table.
Ensure that the process temperature is
within the operating temperature range
of the transmitter (-40 to +85 Degrees
Celsius). If it is certain that the reading
is in error, the Sensor housing may
need to be replaced.
This is a condition that can occur during
normal operation and does not
generally require corrective action. If
this condition is triggered when it is not
expected, verify that the Blocking
Distance High parameter is set correctly
for the current conditions.
If distance to interface is in Higher zone
then status associated with device
variables derived from distance to
interface will be shown as uncertain in
local display and on HART host the
status would be poor accuracy.
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