3.3 Diagnosis via PROFIBUS-DP
The CP system supports diagnostic possibilities via the
PROFIBUS in accordance with EN 50170 (DIN 19245).
PLEASE NOTE
The identifier-related or channel-related diagnosis
listed in standard EN 50170 (DIN 19245) will not be
supported.
3.3.1 Diagnostic words
The following error states of the CP system are
grouped together in diagnostic words and communi-
cated to the controller.
– load voltage drop on the output modules
– short circuit / overload at the output modules
– interruption of the CP connection at various
CP modules
Additional error messages (DIL switch 2 = ON):
– load voltage drop at the CP connection
– voltage for CP valves below tolerance level (< 20.4 V)
Busy bit
With device-related diagnosis 1, the CP system sup-
plies status information as bit 1:
– Busy bit = CP system in start-up phase and therefore
not ready for exchange of data.
If the busy bit is set (= "logic 1"), the diagnostic bits in
bytes 2..5 contain "logic 0". Only device-related diag-
nosis 1 is supported.
3. Diagnosis
CP FB13-E 9904b 3-9
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