12. Appendix C
12.2. Substatus Definitions for Quality Status
R400 Experion PKS Series A Fieldbus Interface Module User's Guide 503
July 2010 Honeywell
Quality Substatus Description
Bad
Non-Specific
There is no specific reason why the value is
bad. Used for propagation.
Configuration Error
Set if the value is not useful because there is
some other problem with the block,
depending on what a specific manufacturer
can detect.
Not Connected
Set if this input is required to be connected
and is not.
Device Failure
Set if the source of the value is affected by a
device failure.
Sensor Failure
Set it the device can determine this condition.
The Limits define which direction has been
exceeded.
No Communication,
with last usable value
Set if this value had been set by
communication, which has now failed.
No Communication,
with no usable value
Set if there has never been any
communication with this value, since it was last
Out of Service.
Uncertain
Non-Specific
There is no specific reason why this value is
uncertain. Used for propagation.
Last Usable Value
Whatever was writing this value has stopped.
(This happens when a configurer disconnects
an input.)
Substitute
Set when the value is written when the block is
Out of Service.
Initial Value
Set when the value of an input parameter is
written while the block is Out of Service.
Sensor Conversion
Not Accurate
Set if the value is at one of the sensor limits.
The limits define which direction has been
exceeded. Also, set if the device can
determine that the sensor has reduced
accuracy, in which case no limits are set.
Engineering Unit
Range Violation
Set if the value lies outside of the range of
values defined for this parameter. The limits
define which direction has been exceeded.
To Next Page
Loading...
