Honeywell SMV800 User Manual page 130

Device 117
Variables
Status
Warning
118
Page 118
MBT Above
Limit
Bit - 12
MBT Below
Limit
Bit - 13
Flow Above
Bit - 14 High Limit
Flow Below Low
Limit
Bit - 15
comm_section_
non_critical
_failure
Bit - 0
sensing_section
_non_critical
_failure
Bit -1
cj_out_of_range
Bit - 2
no_factory
_calibration
Bit - 3
SMV800 Modbus User's Guide
Meter body Temperature
measured is above URV
Meter body Temperature
measured is below LRV
Flow measured is above
URV
Flow measured is below
LRV
This is a roll-up status bit
that is set when any of the
communication module
non-critical status is set
such as
• Display NVM Corrupt
This is a roll-up status bit
that is set when any of the
pressure and temperature
sensing modules non
critical status is set such as
• Unreliable
Communication
• Sensor Input Out Of
Range
• CJ Out Of Limit
• Excess Calibration
Correction
• CJ CT Delta Warning
The Internal Cold Junction
Temperature
(CJ) measured in the
Temperature
module is outside of the
specified range.
Range limits are -40 to 85
degrees C.
This is roll up status bit set
for the following:
• Temperature sensor
module factory calibration
missing
• Pressure sensor module
factory calibration missing
Factory Calibration for
either Temperature
module or Pressure
module is missing.
Accuracy is compromised
if not calibrated.
Verify that the meter body
ambient is within
specifications and if so
adjust URV as per need.
Verify that the meter body
ambient is within
specifications and if so
adjust LRV as per need.
Verify that the Flow value
expected is within URV if
not adjust the Flow URV.
Verify that the Flow value
expected is within
specifications and if so
adjust Flow LRV
Power cycle the device and
if problem persists replace
communication module
Refer detailed status bits
corresponding to pressure
module in register 121 and
temperature module in
register 120.
Verify that the
environmental temp is
within spec. If it is,
Temperature module may
have been damaged.
Replace the Temperature
module
Refer status bits
corresponding to factory
calibration status of
pressure in register 121
and temperature module in
register 120. Accordingly
return the module for
factory calibration.
Revision 1.0