Vega VEGABAR 52 Profibus PA Bedienungsanleitung Seite 51

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Seitenansicht 50
51
10 Supplement
VEGABAR 52 • Probus PA
36719-EN-130321
Byte n
Byte n+1
Bit
7
VZ
Exponent
Bit
6
2
Bit
5
2
Bit
4
2
Bit
3
2
Bit
2
2
Bit
1
2
Bit
0
2
Bit
7
2
Bit
6
2
Bit
5
2
Bit
4
2
Bit
3
2
Bit
2
2
Bit
1
2
Bit
0
2
Sign
Bit
Significant
7
65
4
3
21
0
-1
-2
-3
-4
-5
-6 -7
Byte n+2
Byte n+3
Bit
7
2
Significant
Bit
6
2
Bit
5
2
Bit
4
2
Bit
3
2
Bit
2
2
Bit
1
2
Bit
0
2
Bit
7
2
Bit
6
2
Bit
5
2
Bit
4
2
Bit
3
2
Bit
2
2
Bit
1
2
Bit
0
2
Significant
-9
-10 -11
-12
-13
-14 -15
-16
-17
-18
-19
-20
-21
-22
-23
-8
Value = (-1)
VZ
2
(Exponent - 127)
(1 + Significant)
Fig. 34: Data format of the measured value
Coding of the status byte associated with the PA output value
Status
code
Description according to
Probusstandard
Possible cause
0 x 00 bad - non-specic Flash-Update active
0 x 04 bad - conguration error Adjustment error
Conguration error with PV-Scale (PV-Span too small)
Unit irregularity
Error in the linearization table
0 x 0C bad - sensor failure Hardware error
Converter error
Leakage pulse error
Trigger error
0 x 10 bad - sensor failure Measured value generation error
Temperature measurement error
0 x 1f bad - out of service constant "Out of Service" mode switched on
0 x 44 uncertain - last unstable value Failsafe replacement value (Failsafe-Mode = "Last value" and al-
ready valid measured value since switching on)
0 x 48 uncertain substitute set Switch on simulation
Failsafe replacement value (Failsafe-Mode = "Fsafe value")
0 x 4c uncertain - initial value Failsafe replacement value (Failsafe-Mode = "Last valid value" and
no valid measured value since switching on)
0 x 51 uncertain - sensor; conversion
not accurate - low limited
Sensor value < lower limit
0 x 52 uncertain - sensor; conversion
not accurate - high limited
Sensor value > upper limit
0 x 80 good (non-cascade) - OK OK
0 x 84 good (non-cascade) - active
block alarm
Static revision (FB, TB) changed (10 sec. active, after the parame-
ter of the static category has been written)
0 x 89 good (non-cascade) - active ad-
visory alarm - low limited
Lo-Alarm
0 x 8a good (non-cascade) - active ad-
visory alarm - high limited
Hi-Alarm
0 x 8d good (non-cascade) - active crit-
ical alarm - low limited
Lo-Lo-Alarm
0 x 8e good (non-cascade) - active crit-
ical alarm - high limited
Hi-Hi-Alarm
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