Support for custom Data Types

[skarux]

Feature

• (x) feature request

  What is the motivation or Use Case for your feature request?

  Currently only default OPC UA data types are supported; typing a custom data type in the "OPCUA-IIOT-Node" node the final value attribute gets missing or set to null (depending on the chosen options) and on the following error is displayed on the console: #getConstructor : cannot find constructor for expandedId ns=2;i=6 is reported by the inner OPC UA library. It would be nice to have at least a byte array containing the raw value to be parsed with some external functions.

Your Environment

Please tell us about your environment:

• ( ) I am using just the Node-RED package and got node-opcua installed with it

• ( ) I have installed node-opcua global from source (using git clone)

• (x) I have installed node-opcua as a global package (using npm i -g)

• Device :

  • ( ) macOS: v
  • (x) Linux: Ubuntu 18.04
  • ( ) Windows: v
  • ( ) Raspbian: v
  • ( ) Other:
    • Name:
    • Version:

• Node-RED version: v0.20.8

• node-red-contrib-iiot-opcua version: v3.10.2

• Node: (min. 8.x) node --version = 8.16.1

[piyush-gupt]

I have experienced the same problem where I want to get an array of user defined structures but getting null. Moreover the problem lies not only with OPC UA IIOT contrib but normal OPC UA contrib also.

[biancode]

@erossignon do you have any idea here with v0.7.4 of node-opcua or is it just to implement with v2.x?

[erossignon]

@biancode this will need v2