Using CitectSCADA > Tagging Process Variables > Tag Extensions > QUAL_UNCERTAIN Substatus Values
QUAL_UNCR Substatus Values

Use the the QualityGetPart Cicode function and the necessary Part parameter to return the details of an UNCERTAIN quality tag. The following table identifies the possible information that will be returned.

Cicode label name Value Description
QUAL_UNCR_NON_SPECIFIC 0x00 The value is uncertain but no specific reason is known.
QUAL_UNCR_LAST_USABLE_VALUE 0x01 Whatever was writing this value has stopped doing so. Regard the returned value as ‘stale’. This differs from a BAD value with Substatus 5 (0x14) (Last Known Value). This status is associated specifically with a detectable communication error on a ‘fetched’ value and indicates the failure of some external source to ‘put’ something into the value within an acceptable period of time. The age of the value can be determined from the TIMESTAMP in OPCITEMSTATE.
QUAL_UNCR_SENSOR_NOT_ACCURATE 0x04 Either the value has ‘pegged’ at one of the sensor limits (in which case, set the limit field to 1 or 2) or the sensor is otherwise known to be out of calibration via some form of internal diagnostics (in which case,set the limit field to 0).
QUAL_UNCR_ENG_UNIT_EXCEEDED 0x05 The returned value is outside the limits defined for this parameter. In this case the Limits field indicates which limit has been exceeded but does NOT necessarily imply that the value cannot move farther out of range.
QUAL_UNCR_SUBNORMAL 0x06 The value is derived from multiple sources and has less than the necessary number of Good sources.

See Also

QUAL_EXT Substatus Values

QUAL_GOOD Substatus Values

QUAL_BAD Substatus Values

The Quality Tag Element