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Description of the DP Functions, Data, and Error Codes
DP Base Programming Interface for CP 5613/CP 5614
182
C79000-G8976-C108-01
4.6.3 Format of the Device-Related Diagnostic Data (Standard DP Slave)
Meaning
With standard DP slaves (without the DPC1 extensions), this field contains general
diagnostic information such as overtemperature, undervoltage or overvoltage. The
coding is specified by the slave vendor. For further evaluation, the Ident_Number of
the slave is required.
Structure
Byte Meaning
Byte 1 Header byte
Bytes
2 to 63
Diagnostic_User_Data
Byte 1 (Header Byte)
The two most significant bits in the first byte have the value 00. This identifies the
entire field as "device-related diagnostics".
The remaining six bits specify the length of the data field including the first byte.
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