# Cannot Connect to SLC 5/05

**URL:** <https://forum.inductiveautomation.com/t/cannot-connect-to-slc-5-05/2926>\
**Category:** Ignition\
**Created:** [May 7, 2011, 10:43pm UTC](https://forum.inductiveautomation.com/t/cannot-connect-to-slc-5-05/2926 "2011-05-07T22:43:58Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![moreautomation](https://avatars.discourse-cdn.com/v4/letter/m/e9bcb4/32.png) [@moreautomation](https://forum.inductiveautomation.com/u/moreautomation)\
**Post date:** [May 7, 2011, 10:43pm UTC](https://forum.inductiveautomation.com/t/cannot-connect-to-slc-5-05/2926/1 "2011-05-07T22:43:58Z")

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I have not been able to connect to any SLC 5/05 processors. Connecting to ControlLogix is a breeze. KEPServerEx is running and has no diffculy connecting.

The exact processors are as follows:  
1747-L551  
1747-L551/C  
1747-L552/C  
1747-L553

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**Author:** ![thechtman](https://avatars.discourse-cdn.com/v4/letter/t/e56c9b/32.png) [@thechtman](https://forum.inductiveautomation.com/u/thechtman)\
**Post date:** [May 9, 2011, 5:14pm UTC](https://forum.inductiveautomation.com/t/cannot-connect-to-slc-5-05/2926/2 "2011-05-09T17:14:06Z")

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We frequently connect to SLC 5/05 processors so I’ll need a little more information to narrow in on your connection problems.

- What version of Ignition are you using?
- Are you using a direct Ethernet connection or are you going through a ControlLogix gateway (or any other gateway)?
- Are there any errors in the wrapper.log?

Any additional information will be helpful,

Tom