adccommunitymod (AutomationDirect) asked a question.

D2-CM Blinking 'Run' Light

Created Date: May 24,2010

Created By: bcarlton

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Three bases - each D2-0XB-1. DL-260 in middle base - D2-EM Termination is OFF Other two bases - D2-EM terminations are ON D2-CMs in Expansion Local bases rotary switches set at '1 ' and '2 ' System powers up, one base everything is OK, Main CPU sees it. Other base D2-CM 'Run ' light is blinking. (Pwr is ON, Diag is OFF) BASE 120 VAC power is ok, grounding is OK, producing 24VDC ok. Removed all I/O modules, just D2-CM, still blinking Swapped D2-CM's and D2-EMs between bases. This base still has 'blinking ' on its D2-CM 'run ' light. It does this whether or not communication cable is installed. We are assumiung a bad base and are starting to get hold of a replacement. But, any other ideas?


  • adccommunitymod (AutomationDirect)

    Created Date: May 24,2010

    Created by: bcarlton

    Actually posting my own replay.

    I see this previous thread but it doesn't seem to apply. Our 'blinking ' follows the base only. Maybe just another reason for blinking 'run ' light.

  • adccommunitymod (AutomationDirect)

    Created Date: May 25,2010

    Created by: Do-more PE

    A bad base could cause a blinking Run light. If it follows the base, I'd replace it and see if it cures it.

  • adccommunitymod (AutomationDirect)

    Created Date: May 25,2010

    Created by: bcarlton

    Not to be picky but why isn't 'blinking ' for the 'run ' light in the manual with a list of possible causes? It sure would help with troubleshooting.

  • adccommunitymod (AutomationDirect)

    Created Date: May 25,2010

    Created by: Do-more PE

    I'll see what I can do.

    Edit: I added it as a FAQ to the DL205 list. Best I can do for short term to get it out there. FAQ

  • adccommunitymod (AutomationDirect)

    Created Date: May 25,2010

    Created by: bcarlton

    Good for now, at least it's something.

  • adccommunitymod (AutomationDirect)

    Created Date: May 26,2010

    Created by: bcarlton

    New base fixed the problem.

  • adccommunitymod (AutomationDirect)

    Created Date: May 24,2010

    Created by: bcarlton

    Three bases - each D2-0XB-1.

    DL-260 in middle base - D2-EM Termination is OFF

    Other two bases - D2-EM terminations are ON

    D2-CMs in Expansion Local bases rotary switches set at '1 ' and '2 '

    System powers up, one base everything is OK, Main CPU sees it.

    Other base D2-CM 'Run ' light is blinking. (Pwr is ON, Diag is OFF)

    BASE 120 VAC power is ok, grounding is OK, producing 24VDC ok.

    Removed all I/O modules, just D2-CM, still blinking

    Swapped D2-CM's and D2-EMs between bases.

    This base still has 'blinking ' on its D2-CM 'run ' light.

    It does this whether or not communication cable is installed.

    We are assumiung a bad base and are starting to get hold of a replacement. But, any other ideas?

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