# Connecting Allen Bradely PLC with Node-Red

**URL:** <https://discourse.nodered.org/t/connecting-allen-bradely-plc-with-node-red/70166>\
**Category:** General\
**Created:** [6 November 2022 13:04 UTC](https://discourse.nodered.org/t/connecting-allen-bradely-plc-with-node-red/70166 "2022-11-06T13:04:55Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![prathameshpitale](https://avatars.discourse-cdn.com/v4/letter/p/73ab20/32.png) [@prathameshpitale](https://discourse.nodered.org/u/prathameshpitale)\
**Post date:** [6 November 2022 13:04 UTC](https://discourse.nodered.org/t/connecting-allen-bradely-plc-with-node-red/70166/1 "2022-11-06T13:04:55Z")

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I am new to PLC & NodeRed world. I understand basics of communication with PLC.

I am studying Internet to connect & Acquire Data from AB Micrologix 1200 PLC.

Micrologix 1200 Uses DF1 Protocol Over RS232(Serial Port).

There are Lot of Softwares/Tools available such as KepwareEx Server, Nodered etc, I prefered Nodred.

I wired the micrologix1200 and Installed serial Port in Nodered. The serial Port Node in NodRed shows connected. But I dont know How to go ahead with it and Read Tags from the PLC.

I also Came across OPC-UA server. My questions are:

1. Is my above understanding correct? Am I on right Track?
2. How should I go ahead after The serial Node in NodeRed is showing Connected(green)
3. How should I register the Tags?
4. Is there any OPC server to be installed as software between PLC and Nodered?

I searched Internet but cannot find specific example for RS232 and NodeRed AB micrologix 12.

Please Guide.

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**Author:** ![Steve-Mcl](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/steve-mcl/32/4826_2.png) [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)\
**Post date:** [6 November 2022 13:12 UTC](https://discourse.nodered.org/t/connecting-allen-bradely-plc-with-node-red/70166/2 "2022-11-06T13:12:52Z")

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Have you tried [node-red-contrib-df1 (node) - Node-RED](https://flows.nodered.org/node/node-red-contrib-df1)

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [5 January 2023 13:12 UTC](https://discourse.nodered.org/t/connecting-allen-bradely-plc-with-node-red/70166/3 "2023-01-05T13:12:53Z")

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