# AB PLC with Ethernet IP Continuous read issue
**URL:** https://discourse.nodered.org/t/ab-plc-with-ethernet-ip-continuous-read-issue/94687
**Category:** General
**Created:** [16 January 2025 20:21 UTC](https://discourse.nodered.org/t/ab-plc-with-ethernet-ip-continuous-read-issue/94687 "2025-01-16T20:21:32Z")
**Posts on this page:** 12
**Page:** 1
### Author:  [@meratterman](https://discourse.nodered.org/u/meratterman)
#### Post date: [16 January 2025 20:21 UTC](https://discourse.nodered.org/t/ab-plc-with-ethernet-ip-continuous-read-issue/94687/1 "2025-01-16T20:21:32Z")
Hi,
I am trying to setup a continuous read with my PLC. I am able to read when I start the flow however it doesnt come in on a regular cycle. I realize it only comes in when the value changes however I have written different values to the same tag and it changes when restarting the flow but doesnt update while the flow is running. Does anyone have any suggestions?
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### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [16 January 2025 21:24 UTC](https://discourse.nodered.org/t/ab-plc-with-ethernet-ip-continuous-read-issue/94687/2 "2025-01-16T21:24:50Z")
> [@meratterman](#):
>
> I am trying to setup a continuous read with my PLC.
How have you tried to do that? What node type are you using?
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### Author:  [@meratterman](https://discourse.nodered.org/u/meratterman)
#### Post date: [16 January 2025 21:35 UTC](https://discourse.nodered.org/t/ab-plc-with-ethernet-ip-continuous-read-issue/94687/3 "2025-01-16T21:35:01Z")
Sorry didnt realize I could post a pic.
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### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [16 January 2025 21:41 UTC](https://discourse.nodered.org/t/ab-plc-with-ethernet-ip-continuous-read-issue/94687/4 "2025-01-16T21:41:01Z")
What node type is TemperatureFeedback and how have you configured it?
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### Author:  [@meratterman](https://discourse.nodered.org/u/meratterman)
#### Post date: [17 January 2025 13:50 UTC](https://discourse.nodered.org/t/ab-plc-with-ethernet-ip-continuous-read-issue/94687/5 "2025-01-17T13:50:34Z")
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### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [17 January 2025 14:48 UTC](https://discourse.nodered.org/t/ab-plc-with-ethernet-ip-continuous-read-issue/94687/6 "2025-01-17T14:48:16Z")
I meant what node type have you installed? There is more that one that provide similar features.
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### Author:  [@meratterman](https://discourse.nodered.org/u/meratterman)
#### Post date: [17 January 2025 15:09 UTC](https://discourse.nodered.org/t/ab-plc-with-ethernet-ip-continuous-read-issue/94687/7 "2025-01-17T15:09:59Z")
oops sorry here:
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### Author:  [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)
#### Post date: [17 January 2025 15:51 UTC](https://discourse.nodered.org/t/ab-plc-with-ethernet-ip-continuous-read-issue/94687/8 "2025-01-17T15:51:35Z")
> [@meratterman](#):
>
> I have written different values to the same tag and it changes when restarting the flow but doesnt update while the flow is running
did you wait \> 3 seconds (you have set the cycle to 3000ms)? If yes, then it sounds like a bug - you can look through the nodes [issues](https://github.com/SerafinTech/node-red-contrib-cip-st-ethernet-ip/issues?q=is%3Aissue%20) and report it if it is not already raised.
One thing i did note: you dont seem to have a data type set for the TemperatureFeedback tag?
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### Author:  [@meratterman](https://discourse.nodered.org/u/meratterman)
#### Post date: [17 January 2025 16:50 UTC](https://discourse.nodered.org/t/ab-plc-with-ethernet-ip-continuous-read-issue/94687/9 "2025-01-17T16:50:22Z")
Hi,
yes I did wait 3 seconds. it does write to it, because when I restart the flow the new injected value is read from the PLC, but it doesnt update while the flow is running
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### Author:  [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)
#### Post date: [17 January 2025 18:39 UTC](https://discourse.nodered.org/t/ab-plc-with-ethernet-ip-continuous-read-issue/94687/10 "2025-01-17T18:39:05Z")
Have you checked the PLC actually received the written value?
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### Author:  [@DWoodlock](https://discourse.nodered.org/u/DWoodlock)
#### Post date: [17 January 2025 20:46 UTC](https://discourse.nodered.org/t/ab-plc-with-ethernet-ip-continuous-read-issue/94687/11 "2025-01-17T20:46:04Z")
There's another version of this node:
[https://flows.nodered.org/node/node-red-contrib-cip-ethernet-ip](https://flows.nodered.org/node/node-red-contrib-cip-ethernet-ip)
I have used this one recently for a flow, and it works as I would have expected, it's possible the sterfive version is better, just have not used it yet.
Using Compact logix L30 I believe.
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [17 April 2025 20:46 UTC](https://discourse.nodered.org/t/ab-plc-with-ethernet-ip-continuous-read-issue/94687/12 "2025-04-17T20:46:22Z")
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