H D 2 - D M - A / D M - A M
Operation with the Diagnostic Manager
Subject to reasonable modifications due to technical advances.
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Start Fieldbus Oscilloscope
1.
Right-click on the Diagnostic Module in the project tree
2.
Choose
Additional functions/Fieldbus Oscilloscope
3.
Choose the measured segment by using the Segment Focus but-
ton
•
4.
Choose trigger events and confirm with enter
5.
Press
Start
8.7.2
Trigger Conditions
To make sure that the triggered frame is valid, every trigger event occurs
at the end of the frame.
Trigger events for FOUNDATION Fieldbus segments are:
•
Pass Token to address
•
Probe node to address
•
Token usage from address
•
Missing Token usage (next valid bus address is triggered)
•
Probe response from address
•
Missing probe response to address
•
Claim LAS from address
•
Transfer LAS to address
Trigger events for PROFIBUS PA segments are:
•
Request from address
•
Response from address
•
Missing response from address (next valid bus address is trig-
gered)
•
Pass Token to address
•
Missing Pass Token response from address
Other trigger events:
•
CRC error
•
Framing error
•
Signal level
Depending on the fault tolerances the CRC values of the Diagnostic
Module and the host system can be different.
