# SLC 5/03 via Aparian DH485/B Router

**URL:** <https://forum.inductiveautomation.com/t/slc-5-03-via-aparian-dh485-b-router/33960>\
**Category:** Ignition\
**Created:** [April 15, 2020, 5:45pm UTC](https://forum.inductiveautomation.com/t/slc-5-03-via-aparian-dh485-b-router/33960 "2020-04-15T17:45:38Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ROBERT.BAUMGARTNER](https://avatars.discourse-cdn.com/v4/letter/r/b5ac83/32.png) [@ROBERT.BAUMGARTNER](https://forum.inductiveautomation.com/u/ROBERT.BAUMGARTNER)\
**Post date:** [April 15, 2020, 5:45pm UTC](https://forum.inductiveautomation.com/t/slc-5-03-via-aparian-dh485-b-router/33960/1 "2020-04-15T17:45:38Z")

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We have quite a few AB SLC 5/03 controllers in our facilities.

Given that the AB NET-ENI devices are obsolete, I’m looking for a way to connect to them with Ignition and am evaluating an Aparian DH485/B Router. The device seems to work well for remote programming with RSLinx and RSLogix500. I have the Aparian set up for Transparent PCCC communications.

Having issues trying to connect with Ignition. I have the device configured as an AB SLC in Ignition, and get the alternating “Connecting: Determining Protocol”, “Disconnected: Determining Protocol” status.

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**Author:** ![JordanCClark](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jordancclark/32/83362_2.png) [@JordanCClark](https://forum.inductiveautomation.com/u/JordanCClark)\
**Post date:** [April 15, 2020, 6:52pm UTC](https://forum.inductiveautomation.com/t/slc-5-03-via-aparian-dh485-b-router/33960/2 "2020-04-15T18:52:27Z")

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This might help you.

> [@PCCC protocol causing problems](http://forum.inductiveautomation.com/t/pccc-protocol-causing-problems/11651/16):
>
> This seemed to work: “The correct protocol is EIP (or Bridged EIP). PCCC will not work, it looks like the connection is just getting stuck with an invalid protocol choice. The fastest way to resolve this is to add a connection path of 1,0 to the connection properties. This will result in the selected protocol being Bridged EIP.”

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**Author:** ![ROBERT.BAUMGARTNER](https://avatars.discourse-cdn.com/v4/letter/r/b5ac83/32.png) [@ROBERT.BAUMGARTNER](https://forum.inductiveautomation.com/u/ROBERT.BAUMGARTNER)\
**Post date:** [April 16, 2020, 8:54pm UTC](https://forum.inductiveautomation.com/t/slc-5-03-via-aparian-dh485-b-router/33960/3 "2020-04-16T20:54:51Z")

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Thank you. That did the trick.

The Aparian DH485/B Router is still configured for Transparent PCCC. However, adding the 1,0 to the connection properties for the AB SLC device in Ignition allowed Ignition to connect to the Aparian.