# Problems connecting to a SLC 5/04 using DH+/EIP Bridge

**URL:** <https://forum.inductiveautomation.com/t/problems-connecting-to-a-slc-5-04-using-dh-eip-bridge/35332>\
**Category:** Ignition\
**Tags:** ignition80\
**Created:** [June 4, 2020, 4:13pm UTC](https://forum.inductiveautomation.com/t/problems-connecting-to-a-slc-5-04-using-dh-eip-bridge/35332 "2020-06-04T16:13:17Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Cory.grube](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/cory.grube/32/20476_2.png) [@Cory.grube](https://forum.inductiveautomation.com/u/Cory.grube)\
**Post date:** [June 4, 2020, 4:13pm UTC](https://forum.inductiveautomation.com/t/problems-connecting-to-a-slc-5-04-using-dh-eip-bridge/35332/1 "2020-06-04T16:13:17Z")

</div>

I'm trying to connect to a SLC 5/04 over DH+ using a Prosoft AN-X2 module. This module emulates a 1756-DHRIO. I know other OPC servers support connections in this manner, and I suspect Ignition does per the user manual (1756-DHRIO connection paths are explicitly called out as solutions).

I've got the AN-X2 configured and I can read the SLC data tables through RSLinx. In Ignition, I configure my hostname to be the AN-X2 IP address and the connection path to be 1,1,A,10 (backplane, slot 1, channel A, node 10), per the AN-X2 manual. Unfortunately it never connects, and the status shows as the following:

> Disconnected: Determining protocol

The following message shows up in the log every few seconds:

> Unable to create connect request because transport is invalid.

Does anyone have recommendations on how to resolve this? For reference, the AN-X2/PLC are across a corporate VPN, but as mentioned it's at least visible to RSLinx.

---

<div class="post-metadata">

**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [June 4, 2020, 4:17pm UTC](https://forum.inductiveautomation.com/t/problems-connecting-to-a-slc-5-04-using-dh-eip-bridge/35332/2 "2020-06-04T16:17:54Z")

</div>

Not sure, we haven’t tested with one of these, but our manual suggests it would be 2 for channel A: `1,1,2,10`

(and 3 for channel B)

---

<div class="post-metadata">

**Author:** ![Cory.grube](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/cory.grube/32/20476_2.png) [@Cory.grube](https://forum.inductiveautomation.com/u/Cory.grube)\
**Post date:** [June 4, 2020, 4:23pm UTC](https://forum.inductiveautomation.com/t/problems-connecting-to-a-slc-5-04-using-dh-eip-bridge/35332/3 "2020-06-04T16:23:57Z")

</div>

Dumb miss on my part. That solved it - connected and reading data now. Thanks!