34
Description byte 1, “Status byte”:
Bit
Value
Description
Remark
DR-RDY
0
Reading not started or evaluation unit
diagnostics data not ready
-
1
Diagnostics read ready
Diagnostics read response from evaluation unit is ready
and available in byte 2 … n .
Diag
0
No diagnostics available
-
1
evaluation unit diagnostics occurred
Data not yet written in the response buffer . The
response buffer contains still default values 0x00 . The
diagnostics data will be copied in the response buffer,
after detecting that the DR control bit .is set within the
control byte .
Description Byte 2, ”Number of diagnostic events”:
Number of diagnostic events .
(0 = No diagnostics, 1…4 = 1…4 diagnostics event(s))
Description Byte 3…n:
If bit “DR-RDY” within the Status byte is set these bytes contain the error codes of the evaluation unit .
Otherwise these bytes are set to default value 0x00 by the evaluation unit .
If more than one diagnostics event is available this is appended . Up to 4 diagnostics messages could be
transferred . Error codes see
(→ 14 Error codes of the evaluation unit)
Description Byte (n+1)…20:
Will be set to default value 0x00 by the evaluation unit .
