Forum > Networking and Web Programming
OPC client with Lazarus
denny.chou:
--- Quote from: avra on November 23, 2021, 10:26:18 pm ---
Normally not, but there are OPC-UA to OPC-DA gateways which allow that.
For direct OPC-DA access you can use something like this: https://github.com/seryal/OPCComponent
--- End quote ---
Thank you for your valuable response
denny.chou:
"For direct OPC-DA access you can use something like this: https://github.com/seryal/OPCComponent"
What should I do if such an error message appears when installing this component? thanks！
OPCtypes.pas(37,69) Error: Data element too large
avra:
--- Quote from: denny.chou on November 24, 2021, 06:57:33 am ---What should I do if such an error message appears when installing this component?
--- End quote ---
Contact author or open a github issue? I haven't used that coponent for a while, so maybe trying older Lazarus like 2.0.x might be worth trying.
denny.chou:
--- Quote from: avra on November 24, 2021, 09:14:46 am ---Contact author or open a github issue? I haven't used that coponent for a while, so maybe trying older Lazarus like 2.0.x might be worth trying.
--- End quote ---
Thank you very much for your suggestion. The author has assisted with this issue.
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