lizhengzhou / node-opcda

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

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.