PM8 Waveform capture - third party software

[Anonymous user]

Does anyone know how to capture PM8 waveform using a third party software?

[Hal_Etheridge]

The PM800 waveform download process is actually quite involved.  Multiple modbus requests are required and then the waveform samples need to be demux'ed (multiple channels are interleaved in the same record).  The list of channels captured is partially dynamic so hardcoded offsets and number of requests will not consistently work either.  Overall this is not an easy task to get right for all possible configurations.

If the question is how to manually trigger a waveform the answer is much nicer - a single modbus write should be enough to force the device to capture a new record.

[sesa50168 · Accepted solution]

The format of the PM800 waveform is considered proprietary.  And as Hal indicated, it is not something that would be easy to program.  Considering the programming effort, it is considered to be more cost effective to use the software we sell, than for people to develop their own software for this function.  Was there a particular reason for not wanting to use our software, considering all the other power monitoring features it provides, in addition the waveform functionality?

[Anonymous user]

Thank you all!