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Node.js package to access OPC Da 2.0 for reading and writing. Welcome your PLC JavaScript overlords. Better yet, program them!

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lizhengzhou/node-opcda

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Description

Node.js package to access OPC Da 2.0 for reading and writing,Both X86/X64 supported, implementing the OPC DA specification version 2.05A. Welcome your PLC JavaScript overlords. Better yet, program them!

Known Issues

  • the x64 version has some address corruption problem when you are using VS2012 or later, you can open "Project Property -> Linker -> CommandLine", then add /HIGHENTROPYVA:NO to avoid this issue, See Issue#1 for more detail

Usage

Detail & ChangeLog

  • Date:2017-01-16
  • Date:2016-12-13
    • Thanks for Tom Loya's contribution, now the project can work in a multi-threaded environment. You should call COPCClient::init() and COPCClient::stop() in every thread.
  • Date:2016-07-01
    • this std branch tries to move every ATL to STL.
    • the static .lib now works for MFC too.
  • Date:2016-05-31
    • Modified from X86 Version OPC Client 0.4a by beharrell
    • Add some Hint info
    • X64 Version uses includes files form OPC Core Component 3.0.106.
      • Install OPC Core Component is NECESSARY, I bundled the 3.0.105.1 version (seems more popular).
    • Tested with MatrikonOPC Simulation Server
      • You can get it free at offical site after reg.
      • Start OPC Simulation Server, then build project. Run the demo, input hostname, then input server ID, it should work.
    • I advice you to use hostname instead of IP address for reasons below.
      • If you want to access OPC by IP, you have to enable RemoteRegistry service in services.msc
      • Also , for UAC problem after Vista, your program must run as admin to avoid some issue.

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Node.js package to access OPC Da 2.0 for reading and writing. Welcome your PLC JavaScript overlords. Better yet, program them!

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