# Connecting to a Honeywell UDC Controller via TCP

**URL:** <https://forum.inductiveautomation.com/t/connecting-to-a-honeywell-udc-controller-via-tcp/28241>\
**Category:** Ignition\
**Tags:** ignition80\
**Created:** [September 13, 2019, 12:17pm UTC](https://forum.inductiveautomation.com/t/connecting-to-a-honeywell-udc-controller-via-tcp/28241 "2019-09-13T12:17:03Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![DANewton](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/danewton/32/10851_2.png) [@DANewton](https://forum.inductiveautomation.com/u/DANewton)\
**Post date:** [September 13, 2019, 12:17pm UTC](https://forum.inductiveautomation.com/t/connecting-to-a-honeywell-udc-controller-via-tcp/28241/1 "2019-09-13T12:17:03Z")

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I have 31 OPC-UA devices connected in Ignition, and I am trying to add a new controller: Honeywell UDC3200 with an Ethernet card. I’ve set the controller up correctly with Honeywell’s configuration utility. I have assigned it a static IP address that’s on my subnet and can ping it.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/2X/1/1c532f60148d764af96dc4f820acbb76262c7ca3.png)

The image above shows the addressing used for the registers in the controller. (I need to grab the SP & PV.)

I’ve tried two methods connect without success Modbus TCP and Modbus RTU over TCP. Neither worked.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/2X/1/14e9b9ebbb486526bb754860f8f099317f524ad3.png)

Any suggestions for connecting?  
Any suggestion for reading addresses 400001 and 400003?

Thanks,  
Darrell

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**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:** [September 13, 2019, 12:23pm UTC](https://forum.inductiveautomation.com/t/connecting-to-a-honeywell-udc-controller-via-tcp/28241/2 "2019-09-13T12:23:36Z")

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The “TCP Driver” in your screenshot is _not_ Modbus TCP. It’s a generic TCP driver meant for barcode scanners and things like that.

Are you sure you’ve tried Modbus TCP yet?

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**Author:** ![DANewton](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/danewton/32/10851_2.png) [@DANewton](https://forum.inductiveautomation.com/u/DANewton)\
**Post date:** [September 13, 2019, 12:24pm UTC](https://forum.inductiveautomation.com/t/connecting-to-a-honeywell-udc-controller-via-tcp/28241/3 "2019-09-13T12:24:18Z")

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I have, but I’ll give it another shot.

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**Author:** ![DANewton](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/danewton/32/10851_2.png) [@DANewton](https://forum.inductiveautomation.com/u/DANewton)\
**Post date:** [September 13, 2019, 12:31pm UTC](https://forum.inductiveautomation.com/t/connecting-to-a-honeywell-udc-controller-via-tcp/28241/4 "2019-09-13T12:31:55Z")

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I created a new device with the connection as a Modbus TCP. On the Device Connections page, it shows it as Connecting… Disconnected… Connecting… etc.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/2X/8/8df77f88af8b4a760ff2a8b44029751b651261aa.png)

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<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:** [September 13, 2019, 12:37pm UTC](https://forum.inductiveautomation.com/t/connecting-to-a-honeywell-udc-controller-via-tcp/28241/5 "2019-09-13T12:37:09Z")

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I don’t think there’s anything left to troubleshoot in Ignition then. This device isn’t accepting your connection for some reason. You can verify this with a 3rd party Modbus utility like Modscan or Simply Modbus.

Is there something you have to do in the controller to actually enable Modbus TCP connections?

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<div class="post-metadata">

**Author:** ![DANewton](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/danewton/32/10851_2.png) [@DANewton](https://forum.inductiveautomation.com/u/DANewton)\
**Post date:** [September 13, 2019, 12:38pm UTC](https://forum.inductiveautomation.com/t/connecting-to-a-honeywell-udc-controller-via-tcp/28241/6 "2019-09-13T12:38:49Z")

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Good question, Kevin. As far as I know everything on the controller side should be set up, but I’ll look deeper into it.  
Thanks!