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11.3.4.3
Definition of the status
Status byte
The status is used to provide information about the quality of the input and output values.
This information is classified into four stages. Quality stages such as "Bad", "Uncertain",
"Good" and "Good (cascade)" are accompanied with further information. In this case, it deals
with the sub-status and the limit bits. The status byte has the following structure:
Quality
Limit bits
The meaning of the sub-status depends on whether the condensed status is activated or not.
The sub-status is therefore specified separately for both the cases.
11.3.4.4
Sub-status for deactivated condensed status
Bit
7
6
5
4
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
1
0
0
0
1
0
0
0
0
1
1
0
1
0
0
0
0
1
0
1
0
0
1
0
1
1
0
1
1
0
0
1
0
0
0
0
1
0
0
0
0
SIPART PS2 with PROFIBUS communication
Operating Instructions, 09/2007, A5E00127926-07
7
6
Quality
2
1
0
0
x
x
Bad, non specific
1
x
x
Bad, configuration error
0
x
x
Bad, not connected
1
x
x
Bad, device failure
0
x
x
Bad, sensor failure
1
x
x
Bad, out of service
0
x
x
Uncertain, non specific
0
x
x
Uncertain, sensor conversion not
accurate
1
x
x
Uncertain, configuration error
0
x
x
Uncertain, simulated value
0
x
x
Good, ok
1
x
x
Good, update event
Functions/operations using PROFIBUS PA
Status byte structure
5
4
Sub-status
00
Bad
01
Uncertain
10
Good
11
Good (cascade)
00
Good
01
Lower limit reached
10
Upper limit reached
11
Value is constant.
Name profile
11.3 Cyclic data transfer
3
2
German name
Schlecht
Schlecht, Konfigurationsfehler
Schlecht, keine Verbindung
Schlecht, Gerätefehler
Schlecht, Sensorfehler
Schlecht, Außer Betrieb
Unsicher
Unsicher, Wert ungenau
Unsicher, Konfigurationsfehler
Unsicher, Simulationswert
Gut, Ok
Gut, Aktiver Blockalarm
1
0
Limit bits
209
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