iotServices

iotServices (to be renamed as Iiot Services) Cliente OPCUA con Servidor web. Incluye servidor OPCUA de demonstración. API backend express Frontend en Angular

Starting the web server

For installing and running the web server in development enviroment, use this command:

cd backend
npm i
npm run start:dev

Webserver also exposes a REST API for handling op.

METHOD	ENDPOINT	ACTION
GET	/	home page
GET	/api/opcua/monitoring	Return the list of monitored variables
POST	/api/opcua/monitoring	Add variables to the monitored items
DELETE	/api/opcua/monitoring	Remove variables to the monitored items
GET	/api/opcua/value	Return the value of the variable via nodeId
POST	/api/opcua/value	Set the value of the variable via nodeId

Starting the OPC UA demo server

If you don't have any OPC UA servers at hand, you can use the one included. For installing and running the OPC UA server, use this command:

cd opcua-server
npm i
npm run start

The OPC UA server exposes an endpoint at opc.tcp://localhost:4334/UA/MyLittleServer; it describes this structure:

• MyDevice: ns=1;i=1000
  • MyVariable1: ns=1;i=1001 an autoincremental readonly value starting a 1
  • MyVariable2: ns=1;b=1020FFAA an read/write value initially set on 10
  • FreeMemory ns=1;s=free_memory the current free memory on the server