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

• git clone http://github.com/lizhengzhou/node-opcda.git

• cd node-opcda

• node index.js

• Kepware.KEPServerEX.V6

Detail & ChangeLog

• Date:2017-01-16
  • Modified from X64 Version OPC-Client-X64 by edimetia3d
• 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.