CAN to Ethernet/IP - Atlas Copco Air Dryer BD 185+ (Elektronikon)
Is anyone familiar with reading CAN data from an Atlas Copco Elektronikon PPBE0613 (SN 1713A01262) using an Anybus AB7318 CAN to Ethernet/IP?
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You are going to need the documentation from Atlas Copco for the Elektronikon.
https://www.atlascopco.com/en-us/compressors/locate-us
You can find documentation for the AB7318 here, but this device is just translating the data from the CAN network to the Eth/IP network. Has it already been configured or are you trying to configure it now?
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2946 1798 00 User manual for Elektronikon® Graphic controller .pdf (3.0 MB) XXXX XXXX XX_CAN Manual ed01.pdf (1.5 MB) Here are the manuals that Atlas Copco provided me. I have tried an Anybus configuration but I keep getting a CAN error passive. My guess is that the CAN network is not working. All I need to do is read data from the elektronikon controller. I do not need to write any values to this controller. If there is a way that I can read this data then I will pull it into my Controllogix PLC. I've attached the configuration that I built as well.Anybus Gateway Configuration WTP Atlas Copco Air Dryer.hcg (3.2 KB)
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Thank you for that. I have a few questions:
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What exactly is the error that you are getting? Can you take a screenshot?
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Do you have a USB-to-CAN adapter to connect your PC to the CAN bus?
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Have you checked the CAN bus to make sure you have the correct voltage? Are the ends terminated (see section 7.4 in the AC CAN manual)?
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What are the statuses of the LEDs on the Communicator?
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Does the bitrate match among all CAN devices (Atlas Copco default is 125 kbps)? Is it just the one compressor and the Anybus on the bus?
Thanks,
Kyle
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Thank you. I will check all of the things you've said. I can answer a couple of your questions right away though. This one air dryer will be the only thing that I wish to communicate with, it will be tied directly to the anybus, there will be no other nodes on this network. Because of this I was a little confused as to how the CAN cabling should be done. Do I still need terminating resistors with a single node on the network? I will have to hook up to the anybus, which I cannot do at this exact moment, to answer the rest of your questions. Thanks again.
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I also noticed that it looks as if the pin out that Atlas specifies differs from what the anybus pin out is so I made sure to cross over terminals 6, 7 and 9. Pin 6 on the AC side = pin 9 on the anybus side, pin 7 on the AC side = pin 8 on the anybus side and pin 9 on the AC side = pin 6 on the anybus side.0 -
Do you have the UBS-to-CAN adapter? That would let you see the traffic and see what the errors are:
You still should use the terminating resistors, but it may work without them, being such a short bus. They are still recommended.
Use a multimeter to confirm you have 2 - 4 volts on the CAN bus too.
Let me know what you find!
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You are referencing this pin out for the Anybus, right?
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Will do, I'm hoping to get back over there tomorrow. Thanks for the help!
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