FORUM CTRLX AUTOMATION
ctrlX World Partner Apps for ctrlX AUTOMATION
07-01-2024 06:08 AM
Hello, I would like to read Log data in PLC, but the data return is always wrong data.
I used these 2 functions "DL_ReadNodeValue" and "common_log_diagnosis_fbs_DiagnosisIdentification" to read MainDiagnosisNumber, DetailedDiagnosisNumber and Entity back to PLC.
But the data return only "(" in Main Diagnosis, "timestamp" in Detailed Diagnosis and no data return in Entity.
I using the same programs to read PLC info by CXA_PLC_fbs fuction, the results returned correctly without problem. Could you help me check whether there is any mistake of the fuction of read diagnosis log?
Thanks.
Solved! Go to Solution.
07-01-2024 03:34 PM - edited 07-02-2024 01:04 PM
Data layer node diagnosis/get/actual/log is associated to schema types/diagnosis/identification-timestamp. The POU for this schema is common_log_diagnosis_fbs_DiagnosisIdentificationWithTimestamp, not common_log_diagnosis_fbs_DiagnosisIdentification.
After the initial call to DL_ReadNodeValue, use common_log_diagnosis_fbs_DiagnosisIdentificationWithTimestamp to get the root structure, then a pointer to common_log_diagnosis_fbs_DiagnosisIdentification to get the inner structure:
EDIT: Tested with ctrlX CORE 2.6.x, but should apply equally with ctrlX CORE 1.20.x.
07-02-2024 08:27 AM - edited 07-02-2024 08:29 AM
Please always tell which ctrlX version you are using, while newer ctrlX version have more FB's which might help you.
07-03-2024 09:04 AM
I have already tried it in ctrlX CORE 2.4.0, it could use without problem.
Thanks a lot.