KROHNE MFC 010 C Converter - Manual (Page 87)

MFC010 Interface Manual 85
9.2 Process Warnings
The Process Warning flags, held as a long integer value in input registers 7003/7004, are an indication of
process conditions that are present at that moment that may adversely affect the measurement operation
or accuracy of the mass flow sensor, such as exceeding the specified operating limits of the sensor. Input
registers 7007/7008 hold a stored history of which these warning flags hav e been s et s ince t he l ast
“Reset” command, which can be used to monitor and record the occurrence of transient process warning
conditions. (See Output Coil Number 1009 on page 39 for details of how to reset the stored Error Flags).
Bit Warning Flag Designation
0
CT
Name
: Mass Flow Over-range
Cause
: The measured mass flow is beyond the maximum allowable limit
for this sensor
1
CT
Name
: Process Temperature Outside Limits
Cause
: The measured tube temperature has been outside of the
permissible operating limits of the sensor.
2
CT
Name
: Process Density Over-range
Cause
: The product density is beyond the allowable limits of the system
to enable accurate measurement
3
CT
Name
: Mass Totaliser Over-flow
Cause
: The Mass total value has overflowed, i.e. the mass total variable
has previously reached its maximum permissible value and
therefore has been forced to return to zero after the following
increment.
4
CT
Name
: Volume Totaliser Over-flow
Cause
: The Volume total value has overflowed, i.e. the Volume total
variable has previously reached its maximum permissible value
and therefore has been forced to return to zero after the following
increment.
5
Name
: Additional Totaliser Over-flow
Cause
: The Additional total value has overflowed, i.e. the Additional total
variable has previously reached its maximum permissible value
and therefore has been forced to return to zero after the following
increment.
6
Name
: Concentration By Mass Totaliser Over-flow
Cause
: The Concentration Total - By Mass value has overflowed, i.e. the
Concentration Mass total variable has previously reached its
maximum permissible value and therefore has been forced to
return to zero after the following increment.
7
Name
: Concentration By Volume Totaliser Over-flow
Cause
: The Concentration Total – By Volume value has overflowed, i.e.
the Concentration Volume total variable has previously reached
its maximum permissible value and therefore has been forced to
return to zero after the following increment.