Emerson Exchange 365

Using an SMC Flex soft motor starter with DeviceNet

Anyone had experience with these?  I can't seem to get them to show up on diagnostics.   I've checked the address, the baud, 24V power on the unit, ect...   Normally with a devicenet device, if you turn off I/O polling and download the placeholder, it will allow you to check in diagnostics what you have at that particular address, and allow you to change the EDS file used.  This particular device will not talk period.  I don't even have extra DEV01, DEV02 devices showing up on the network.  Anybody got an idea?

• DeviceNet

Tracy Waller

• 27 Jan 2015 11:33 AM
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5 Replies

• Aaron Crews

  

  • 27 Jan 2015 1:48 PM

  Is it possible that the issue has something to do with the DeviceNet segment? Is the starter the only device on that segment?

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• Tinh Phan

  

  • 27 Jan 2015 6:00 PM

  Hello Tracy, I did run into this situation a very long time ago. How I got out of that state was to disable my DeviceNet port, Download, enable my port, and download. Went to Diagnostic and did a rescan port. Give this a try when you system is in a down state bc it will take down your segment and bring it back up. The last resort would be to flash the card and download. What is your Controller version and DeviceNet card fw info? My guest is someone is throwing garbage into the segment and causes this.

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• Tracy Waller

  

  • 29 Jan 2015 8:13 PM

  The problem has been resolved! It has come to my attention that wiring is very important. We basically had to go through the plant, take apart all of the thick devicenet round connectors, and carefully rebuild. Now it works like a charm...

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• Rachelle McWright

  

  • 29 Jan 2015 8:20 PM

  In reply to Tracy Waller:

  Great news, Tracy Waller and thanks for posting your findings. :) Would anyone care to comment on best practices for "Wiring" or offer any additional tips?

  Best Regards,

  Rachelle McWright: Business Development Manager, Dynamic Simulation: U.S. Gulf Coast

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• Tracy Waller

  

  • 30 Jan 2015 5:11 PM

  In reply to Rachelle McWright:

  #1: Be very careful when wiring the round connectors. It's very easy to get a stray wire strand. #2: Verify 60 ohms between Can-HI and Can-Lo. If it's 120, you are missing a terminator. If it's less, you have too many... #3: Verify 24 volts across all red/black wires...

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