# C/CON-16 is down

**URL:** <https://forums.digi.com/t/c-con-16-is-down/7759>\
**Category:** USB Devices\
**Created:** [February 26, 2008, 3:36pm UTC](https://forums.digi.com/t/c-con-16-is-down/7759 "2008-02-26T15:36:25Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![jgt](https://avatars.discourse-cdn.com/v4/letter/j/58956e/32.png) [@jgt](https://forums.digi.com/u/jgt)\
**Post date:** [February 26, 2008, 3:36pm UTC](https://forums.digi.com/t/c-con-16-is-down/7759/1 "2008-02-26T15:36:25Z")

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We have recently re-installed a C/X pci card into a SCO 6.0 system, the card and box were previously installed and working in a SCO 5.0.7 system. The software installs, and everything seems OK, but the C/CON is always marked “Down” in the mpi program.  
The status on the C/CON is “AC”  
There is a terminator plug on the C/CON, but not on the second port on the C/X card. Is this required?  
Will the MS-DOS diagnostics test the C/CON - C/X connectivity?

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**Author:** ![userid0](https://avatars.discourse-cdn.com/v4/letter/u/f6c823/32.png) [@userid0](https://forums.digi.com/u/userid0)\
**Post date:** [February 26, 2008, 3:40pm UTC](https://forums.digi.com/t/c-con-16-is-down/7759/2 "2008-02-26T15:40:39Z")

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Have you confirmed the node number settings on the C/CON(s)?

[http://www.digi.com/support/kbase/kbaseresultdetl.jsp?id=2](http://www.digi.com/support/kbase/kbaseresultdetl.jsp?id=2)

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**Author:** ![jgt](https://avatars.discourse-cdn.com/v4/letter/j/58956e/32.png) [@jgt](https://forums.digi.com/u/jgt)\
**Post date:** [February 26, 2008, 4:04pm UTC](https://forums.digi.com/t/c-con-16-is-down/7759/3 "2008-02-26T16:04:02Z")

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Yes, I set it to one.

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**Author:** ![michaelt](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.digi.com/michaelt/32/92_2.png) [@michaelt](https://forums.digi.com/u/michaelt)\
**Post date:** [February 26, 2008, 4:09pm UTC](https://forums.digi.com/t/c-con-16-is-down/7759/4 "2008-02-26T16:09:29Z")

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1n would be the correct node setting for a single concentrator hanging off the C/X host adapter card, so I’m not sure why this would show as Down in mpi. That is a common behavior when node is set incorrectly however so rechecking the node number setting would probably be worthwhile

To answer your other question, a terminator plug is NOT needed on an unused line of a C/X host adapter card.

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**Author:** ![jgt](https://avatars.discourse-cdn.com/v4/letter/j/58956e/32.png) [@jgt](https://forums.digi.com/u/jgt)\
**Post date:** [March 8, 2008, 7:28pm UTC](https://forums.digi.com/t/c-con-16-is-down/7759/5 "2008-03-08T19:28:39Z")

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Chalk it up to brain fade.  
I went back to the site armed with spare cables and C/CON boxes, and checked the settings on the box, and it was 2.  
I guess somehow I had pushed the buttons in the wrong order, and changed the setting from 1 to 2 in the process of trying to save it.