# PLC Allen Bradley 1400

**URL:** <https://forum.inductiveautomation.com/t/plc-allen-bradley-1400/43635>\
**Category:** Ignition\
**Created:** [February 19, 2021, 8:37pm UTC](https://forum.inductiveautomation.com/t/plc-allen-bradley-1400/43635 "2021-02-19T20:37:45Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![paul.chacon](https://avatars.discourse-cdn.com/v4/letter/p/858c86/32.png) [@paul.chacon](https://forum.inductiveautomation.com/u/paul.chacon)\
**Post date:** [February 19, 2021, 8:37pm UTC](https://forum.inductiveautomation.com/t/plc-allen-bradley-1400/43635/1 "2021-02-19T20:37:45Z")

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Hi Guys

I have an allen bradley 1766-L32BWA C/21.02 MicroLogix 1400.

Currently i have 3 of them already connected to the Factory brain with no issues but this last one does not show any information.

Do you have any suggestions on what i can check besides the IP, SN mask and the default gateway?

Also i’m not that knowledgeable on what type of connection protocol does the plc has embedded in example TCP and UDP ports 2222 and 44818.

Thanks

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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [February 19, 2021, 11:04pm UTC](https://forum.inductiveautomation.com/t/plc-allen-bradley-1400/43635/2 "2021-02-19T23:04:04Z")

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Thought that one was supported. Driver settings differences between working and non-working instances?