CODESYS - the IEC 61131-3 automation software

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 Post subject: CAN bus on CPX-CEC
PostPosted: Sun Jun 23, 2019 12:16 pm 
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Joined: Wed Oct 26, 2016 7:34 pm
Posts: 6
Hi

I need to communicate with a Smart Power Meter (mesureing volt, Amp, Wats on 3 phases) PM-3133-CPS via Canbus from a CPX-CEC

The manufacturer do have this user manual
http://ftp.icpdas.com/pub/cd/powermeter/pm-3133/user'smanual/PM-3133-Series%20User's%20Manual_En%20v1.08.pdf

I have set up a CANopen bus and added in the PM-3133-CPS as CAN-ID 2 and added in the .eds file attached

Then I have selected the PDO's I l├Žike to get the values for eg. Va, Ia

the project compile fine and when downloaded it does run and I can see on a scope that a init communication goes on but I never get any values back.

I can see around on the web that people does talk about that a Network Variable are needed, is that correct?

Also some mentioned that if the valued are not use by the codesys then it's actually not transferred over the CAN bus is that correct as well?

Also I'm in doubt what type of communication are needed to get the values on regular base (i would like a value like ever 500mS, should it be async, sync or RTR driven... it really not clear

It would be great with an example showing how this works

Please advise
Thank you
Wiljan


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 Post subject: Re: CAN bus on CPX-CEC
PostPosted: Sun Jun 23, 2019 2:00 pm 
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Joined: Wed Oct 26, 2016 7:34 pm
Posts: 6
Just adding some screendumps to make it more clear


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