Data traffic
6.3 Acyclic data traffic
PROFINET Proxy SPP2000
Equipment Manual, 03/2022, L1V30814715D-01
63
6.3.15
Error telegrams data set
If a data set is rejected by the SPP2000, the following happens:
•
The request is negatively acknowledged with an NRS telegram.
•
The request is signaled to the master with an error telegram that includes the negative
acknowledgment and error code.
Structure of the error telegram
The error telegram has the following structure:
Function_Num
Error_Decode
Error_Code_1
Error_Code_2
•
Function_Num
(if no error: B#16#00 for an error)
–
Function identification from data set (DS) record: reading 0xDE, writing 0xDF
–
DS record protocol element not used: B#16#C0
•
Error_Decode
Location of error detection: SPP2000 0x80
•
Error_Code_1
Error detection
•
Error_Code_2
Reserved
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