VEGA VEGAPULS 66 (≥ 2.0.0 - ≥ 4.0.0) enamel Profibus PA - Manual (Page 67)

67
11 Supplement
VEGAPULS 66 enamel • Profibus PA
36529-EN-121011
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 6 5 4 3 2 1 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. 51: Data format of the measured value
11.8 Coding of the status byte associated with the PA output value
You can find further information for the coding of the status byte in the Device Description 3.02 on
www.profibus.com.
Status code Description according to
Profibus standard
Possible cause
0 x 00 bad - non-specific Flash-Update active
0 x 04 bad - configuration error – Adjustment error
– Configuration 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 con-
stant
"Out of Service" mode switched on
0 x 44 uncertain - last unstable
value
Failsafe replacement value (Failsafe-Mode = "Last val-
ue" and already 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; con-
version not accurate - low
limited
Sensor value < lower limit
0 x 52 uncertain - sensor; con-
version not accurate - high
limited
Sensor value > upper limit
0 x 80 good (non-cascade) - OK OK
0 x 84 good (non-cascade) - ac-
tive block alarm
Static revision (FB, TB) changed (10 sec. active, after
the parameter of the static category has been written)