# Obtain value of a tension value in labview through node red

**URL:** <https://discourse.nodered.org/t/obtain-value-of-a-tension-value-in-labview-through-node-red/7924>\
**Category:** General\
**Created:** [13 February 2019 12:08 UTC](https://discourse.nodered.org/t/obtain-value-of-a-tension-value-in-labview-through-node-red/7924 "2019-02-13T12:08:22Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![smalhao](https://avatars.discourse-cdn.com/v4/letter/s/a3d4f5/32.png) [@smalhao](https://discourse.nodered.org/u/smalhao)\
**Post date:** [13 February 2019 12:08 UTC](https://discourse.nodered.org/t/obtain-value-of-a-tension-value-in-labview-through-node-red/7924/1 "2019-02-13T12:08:22Z")

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I want to get the value of a voltage from Labview to the red node, is it possible?

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**Author:** ![ukmoose](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/ukmoose/32/13_2.png) [@ukmoose](https://discourse.nodered.org/u/ukmoose)\
**Post date:** [13 February 2019 13:14 UTC](https://discourse.nodered.org/t/obtain-value-of-a-tension-value-in-labview-through-node-red/7924/2 "2019-02-13T13:14:16Z")

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What APIs does lab is have?

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**Author:** ![smalhao](https://avatars.discourse-cdn.com/v4/letter/s/a3d4f5/32.png) [@smalhao](https://discourse.nodered.org/u/smalhao)\
**Post date:** [13 February 2019 13:17 UTC](https://discourse.nodered.org/t/obtain-value-of-a-tension-value-in-labview-through-node-red/7924/3 "2019-02-13T13:17:45Z")

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I´m working with CompactRIO with OPCUA protocol

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**Author:** ![ukmoose](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/ukmoose/32/13_2.png) [@ukmoose](https://discourse.nodered.org/u/ukmoose)\
**Post date:** [13 February 2019 13:22 UTC](https://discourse.nodered.org/t/obtain-value-of-a-tension-value-in-labview-through-node-red/7924/4 "2019-02-13T13:22:34Z")

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there are several nodes that can talk opcua

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**Author:** ![smalhao](https://avatars.discourse-cdn.com/v4/letter/s/a3d4f5/32.png) [@smalhao](https://discourse.nodered.org/u/smalhao)\
**Post date:** [13 February 2019 13:23 UTC](https://discourse.nodered.org/t/obtain-value-of-a-tension-value-in-labview-through-node-red/7924/5 "2019-02-13T13:23:44Z")

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yes is that, access the voltage value of a node, but i don't now how i do it

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**Author:** ![ukmoose](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/ukmoose/32/13_2.png) [@ukmoose](https://discourse.nodered.org/u/ukmoose)\
**Post date:** [13 February 2019 13:27 UTC](https://discourse.nodered.org/t/obtain-value-of-a-tension-value-in-labview-through-node-red/7924/6 "2019-02-13T13:27:32Z")

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Great then you probably are already using the right node for the job.

If you can access the voltage value you should be able to read it in nodered

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**Author:** ![smalhao](https://avatars.discourse-cdn.com/v4/letter/s/a3d4f5/32.png) [@smalhao](https://discourse.nodered.org/u/smalhao)\
**Post date:** [13 February 2019 13:29 UTC](https://discourse.nodered.org/t/obtain-value-of-a-tension-value-in-labview-through-node-red/7924/7 "2019-02-13T13:29:45Z")

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> [@smalhao](#):
>
> yes is that, access the voltage value of a node, but i don't now how i do it

yes is that, access the voltage value of a node in labview and transport them to the node red, but I do not know how to do it

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**Author:** ![ukmoose](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/ukmoose/32/13_2.png) [@ukmoose](https://discourse.nodered.org/u/ukmoose)\
**Post date:** [13 February 2019 13:41 UTC](https://discourse.nodered.org/t/obtain-value-of-a-tension-value-in-labview-through-node-red/7924/8 "2019-02-13T13:41:56Z")

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There are a number of tutorials online that should help, on using OPC UA with node-RED would suggest starting there.