RSLinx OPC Data Testing Using OPC Test Client | RSLinx DDE/OPC Topics Tips & Tricks

[@ShaneWelcher]

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[@PardeepLabVIEW]

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[@sergheicaraman545]

Thank you but I have a question: What happens if you get your PLC offline? RSlinx goes always on as well as the Factory? It seems they are both running from cache. Is there a way that the Factory flags up the loss of connection once the PLS goes offline?

[@ShaneWelcher]

Once the PLC fails to connect to the OPC then it should show bad connection or bad data instead of real world values

[@VaibhavShankar-xo1kn]

Great video! Thank you! Do you know how to run the RSLinx Classic OPC as automatic service to run 24/7?

[@ShaneWelcher]

If you have a connection that request then I automatically connects. Meaning, an OPC topic through RSLinx running as a service

[@VaibhavShankar-xo1kn]

@@ShaneWelcher Ahh I see. Thank you. I am also working on a client application that needs to pull data from the RSLinx Classic OPC. How do we setup a subscription / publication service between the two? For example: 1. Part Serial scans by PLC 2. Print Command by PLC These reflect in RSLinx OPC. Wondering how to push that to the client app

[@ShaneWelcher]

@@VaibhavShankar-xo1kn This is not something that can be easily answered over text because it depends on what OPC connection you are using. Refer to Rockwell's knowledgebase

[@Sumee21051987]

I am using RSLinx Classic Gateway. Is it possible to use DDE/Topic configuration with that? I am trying to run Machine Simulator with RSLinx Classic Gateway. Is it possible with OPC Test Client? Thank you in advance.

[@ShaneWelcher]

@@Sumee21051987 depends on the operating system you are using. Certain windows 10 and windows 11 OS systems have security that blocks DDE

[@spidergt80]

Can you use RSlinx lite to connect to Machine simulator (easyPLC) … or it must be a non “lite” edition?

[@ShaneWelcher]

You need to use RSLinx Classic or Pro so you can use OPC topics. Lite doesn't offer OPC topics

[@seulcruz4918]

What version is your Studio 5000?

[@ShaneWelcher]

Studio 5000 V32

[@shawnspencer8766]

When you purchase software, does it come with rslinx classic? Or do you have to purchase that seperate

[@ShaneWelcher]

When you purchase Studio 5000 or RSlogix 5000 then yes.

[@shawnspencer8766]

@@ShaneWelcher ahh, I got the 500 micro. Probably still comes with classic lite then I'm sure. Thanks for the reply 👍🏻

[@ShaneWelcher]

@@shawnspencer8766 yes, the micro lite comes with RSlinx classic lite. RSlinx lite doesn't allow OPC usages

[@shawnspencer8766]

@@ShaneWelcher actually I bought micro starter. Any luck with that one?

[@ShaneWelcher]

@@shawnspencer8766 if you have RSlinx lite then no OPC use. You need the pro version of RSlinx

[@nbw22]

Thanks for the enlightenment. I have a question about my RSlogix.. I want to connect my Citect Scada 2018 to Rslogix5000 using RSLink Classic Gateway and I am using Rslogix Emulate 5000 as my PLC . Kindly enlighten me on the configure driver setting or if you have a tutorial would be highly appreciated. Thanks a million!

[@ShaneWelcher]

Have you tried OPC? Setting up a topic then adding the tags.

[@nbw22]

@@ShaneWelcher Thanks for your reply. Our OPC has been running quite well in the plant but I had not been involved setting it up during commissioning. So now I want to practice doing it with an emulator (RSlogix emulate 5000) with my rslinxclassic gateway to my citect scada. I'm confused which driver i will use when setting up drivers for opc in rslinx.. 😅. if i use ethernet, is the hostname my pc name? Also my rslinx keeps closing now if i click any drivers.. 🤔🙏

[@ShaneWelcher]

@@nbw22depends if you are running it as a service or application Check RSLinx control panel

[@VentureIndus]

brilliant explanation.. Thanks Shane

[@ShaneWelcher]

@@VentureIndus Thanks

[@aprilmay5974]

Hello Sir, I have RS Linx Classic Gateway, RS Logix 500 Pro, RS View32 for my AB Micrologix 1200, can I remote control this PLC using LabVIEW and its web publishing tool thru RS Linx OPC Server? Thank you very much

[@ShaneWelcher]

Seems possible, you should try it

[@kanishgakathiravan3574]

Thank you very much for sharing knowledge

[@ShaneWelcher]

Glad to help

[@PardeepLabVIEW]

great dear sir

[@ShaneWelcher]

Keep watching

[@arjunjayswal6347]

Thank you