We have a setup with an analogue sensor whose data is converted to digital data and sent on a Profibus DP cable. We would like to look at the latency/delay between analog values and Profibus messages without interfering.
Requirements:
- Hardware platform that can record both analog data and profibus data
- Data can be timestamped with reception time
- Analog data and profibus data is recorded and timestamped on a synchronized clock
- No interference with the system under test.
We imagine one way to do this is a use a Profibus module and connect this to the the Profibus DP cable in a passive mode. That is, not as a slave or as a master but in a eavesdropping/capture mode.
One example of possible hardware for the profibus data is this one:
https://www.ni.com/sic/configurator/configure.action?sfId=NI&wcs_l=en-no&wcs_k=c-series-profibus-int...
But I cannot find any online documentation of whether it supports a "capture mode".
Can anyone help?
