1. Node.js 32-bit
2. WinCC V7.5 and WinCC ODK RT
3. WinCC Unified RT
4. A fresh install of Node need to run command npm install -g node-gyp in cmd.exe
5. For rest of node model dependencies, type npm install -s express.. to install the node modules which package.json listed.

The building process was done based on this tutorial:https://medium.com/jspoint/a-simple-guide-to-load-c-c-code-into-node-js-javascript-applications-3fcccf54fd32

The binding.gyp file contains information about the sources, includes and libraries.
Please install 32-bit version of Node.js!

The building Process:

1. Install the node-addon-api: npm install -S node-addon-api
2. Install node-gyp npm install -g node-gyp
3. Configure and build it: node-gyp clean configure build (this gives you the ODK.node Native Module)
   if you got error message:gyp ERR! stack Error: EBUSY: resource busy or locked,Please typenode-gyp configure buildinstead,or close vscode and do step2 again in Windows cmd.

Test ODK functions form C++ to JavaScript:

1. Open index.js, type node index.js in Terminal or Windows cmd to see whether ODK functions works in JavaScript or not.
   In index.js,ODK connetion,read,write and Subscribe functions can be tested one by one.

Before running the server, you needd to generate the certificates as it is explained in the documentation file inside the "docs" folder.

1. Run Wincc ODK Runtime and make sure the tagnames of Namecolumn in WinccTagConfiguration.xml are all existed in WinCC.
2. type node Server.js --southboundservice=classic --serverconfig=WinccTagConfiguration.xml --clientconfig=wincc2opcenter --log=verbose in Terminal or Windows cmd to start up the Server connect to WinCC V7.5.

1. Run Wincc Unified Runtime and make sure the tagnames of Namecolumn in TagConfiguration.xml are all existed in WinCC Unified.
2. type node Server.js --southboundservice=unified --serverconfig=TagConfiguration.xml --clientconfig=unified2opcenter --log=verbose in Terminal or Windows cmd to start up the Server connect to WinCC Unified.