KROHNE OPTIWAVE 5200 PROFIBUS - Manual (Page 15)

COMMISSIONING / OPERATION
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15
OPTIWAVE 5200 C
www.krohne.com 10/2013 - 4003066901 - MA OPTIWAVE5200C-PA-R01-en-
Status = Limits
Check the first two quality bits in order to get the quality information of the measurement value:
• Good (Non Cascade): Good (Non Cascade): Good (Non Cascade): Good (Non Cascade): function block output value is ok and can be used without restrictions
• Good (Cascade): Good (Cascade): Good (Cascade): Good (Cascade): will not be supported, because it is not applicable for the device
• Uncertain: Uncertain: Uncertain: Uncertain: function block output value can be used but the accuracy can not be guaranteed
(function block outputs value has been frozen, A/D converter is saturated or out of range, ...)
• Bad: Bad: Bad: Bad: function block output value is bad - do not use it for process control!
The "Quality-Substatus" and "Limit" bits will be used for further diagnostics or limit checking.
Classic Status Classic Status Classic Status Classic Status
The Classic Status is implemented to provide compatibility to systems which are not configured
for Condensed Status. The coding is shown in the following table:
Quality Quality substatus Limits
Gr Gr QS QS QS QS Qu Qu
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
0 0 = ok
0 1 = low limited
1 0 = high limited
1 1 = constant
INFORMATION!
The status should be monitored because a number will be transmitted even if the status of the
measurement value is bad or uncertain. This is the only way to check the quality of the
transmitted measurement values.
Quality Quality substatus Limits
Gr Gr QS QS QS QS Qu Qu
2 7 2 6 2 5 2 4 2 3 2 2 2 1 2 0
0 0 = bad
0 1 = uncertain
1 0 = good (Non Cascade)
1 1 = good (Cascade) - not supported