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Reference Manual
00809-0400-4728, Rev AA
June 2011
Rosemount 644
3-20
Table 3-5. Sensor Transducer
Block STB.SENSOR_
DETAILED_ STATUS messages
STB.SENSOR_DETAILED_STATUS Description
Invalid Configuration Wrong sensor connection with wrong sensor
type
ASIC RCV Error The micro detected a chksum or start/stop bit
failure with ASIC communication
ASIC TX Error The A/D ASIC detected a communication error
ASIC Interrupt Error ASIC interrupts are too fast or slow
Reference Error Reference resistors are greater than 25% of
known value
ASIC Configuration Error Citadel registers were not written correctly. (Also
CALIBRATION_ERR)
Sensor Open Open sensor detected
Sensor Shorted Shorted sensor detected
Terminal Temperature Failure Open PRT detected
Sensor Out of Operating Range Sensor readings have gone beyond
PRIMRY_VALUE_RANGE values
Sensor beyond operating limits Sensor readings have gone below 2% of lower
range or above 6% of upper range of sensor.
Terminal Temperature Out of Operating
Range
PRT readings have gone beyond
SECONDARY_VALUE_RANGE values
Terminal Temperature Beyond Operating
Limits
PRT readings have gone below 2% of lower
range or above 6% of upper range of PRT.
(These ranges are calculated and are not the
actual range of the PRT which is a PT100 A385)
Sensor Degraded For RTDs, this is excessive EMF detected. This
is thermocouple degradation for thermocouples.
Sensor Error The user trim has failed due to excessive
correction or sensor failure during the trim
method