I forgot to mention, the picture atatched is using a display not a controller but still same idea to use to CANopen function blocks

Good morning Tom and Pinias

If this is not too much work, could you recommend a good site where I can find these applications? I've been looking for a while but can't find the appropriate sites or documentation. Also on youtube I can't find much anymore besides the video of Danfoss itself. Maybe I overlooked this or I'm not typing the right search terms. If you'd rather not do this, I can understand. Everyone has work to do, of course.

To reply to you Pinias, I didn't write my previous post so clearly on reflection. It is for the siemens PLC (ET200SP) that I use a CAN module (6ES7 137-6EA00-0BA0). On the Danfoss controller I use the CAN ports that can be found on the controller itself. I think I already know the Danfoss function blocks you are talking about from the Danfoss video about CAN communication. However I'm still trying to figure out exactly how to hook these up though.

I'm going to use the siemens PLC as master and the Danfoss controller as slave.

If you need some more info that will make it easier for you to help me, I'd be happy to do so!

Thank you for all the responses, you are a great help!

The nice thing about PLCs, in my limited experience, is that any sort of fieldbus they use, like CAN, is usually integrated into the platform in such a way that you don't have to really learn any low level details of the communication.  That's especially the case if it's between modules of the same brand.  I'd guess that operating within the Siemens platform that almost all of the details about CAN communication like the CAN ID format and endianness is not required knowledge.

Mobile controllers seem to more often require you to learn more about the details of the communication.  I think you are going to have to spend some time reading some fundamental CAN bus application articles if you have not already.  There is a lot available out there fortunately.

Hey Daan,

just curious why you need the siemens PLC since you got a "huge" Danfoss controller? will it be just to interface the HMI.

sounds like what you need is CANopen of course the danfoss controller can work that way just keep in mind that in such case you need to create all functions for CANopen -as a slave- using the Danfoss function blocks.

hope this gives a little help

regards

I'm unaware of exactly what the difference is between the two output modes, 3 and 6.  They both appear to be duty cycle control.  My expectation is that mode 6 turns on some additional internal diagnostics and/or optimizes some parameters for the internal signal generator (such as PID loop) for specifically controlling PVE valves.

You would actually want to use mode 4 or 5 for drive any generic proportional Cetop DCV or other proportional valve.  The current control modes will yield more consistent results as the coil heats up or is ever replaced.

You actually don't need to use the 'correct' function block as was mentioned last.  It's recommended because those function blocks provide useful scaling and support diagnostic conditions well.  They save time.