Code Generation

Verbotics Weld allows you to customise the code generation (also known as post-processor) which creates robot programs from a Verbotics project file.

Managing Generators

To view the code generators available, go to Edit > Preferences > Generators. You will be able to see the inbuilt default generators (where Inbuilt is set to yes), as well as any custom generators you have available.

Using a Custom Generator

Custom generators are JavaScript files .js placed into your application data directory. To use a custom code generator provided to you, go to Edit > Preferences > Generators, and click “Open Generator Directory”. This will open a folder where you can place the provided .js file, and it will automatically be recognised by Verbotics Weld.

To use this generator in your project, go to Project Settings, then under “Program generator” select the customised generator you want to use.

Creating a Custom Generator

To create a custom generator, you can create a .js file in the generator directory - for example my_custom_generator.js. You can request us to provide a reference copy of the standard generator for your robot which can reference when customising your generator. Each generator file must export an object called metadata with information about the generator, as well as a Generator class.

It is recommended that you import the default Verbotics generator for your specific robot as a base class, and only customise the specific functions you need. This means that any other improvements to the inbuilt Verbotics generator which you have not customised will not require you to update your generator.

As an example, here is a minimal customisation of the inbuilt FANUC LS generator which replaces the weld arc on and off instructions with a custom command.

import { Generator as GeneratorBase, metadata as defaultMetadata } from 'verbotics/fanuc_ls';

export const metadata = {
  name: 'My Custom Fanuc LS',
  author: 'Example User <info@example.com>',
  version: '20250807',
  options: defaultMetadata.options,
};

export class Generator extends GeneratorBase {
  beginArcOn() {
    // Call a custom job instead of the default FANUC arc instructions. Note, if we want to also
    // use the behaviour of the `GeneratorBase`, we would also include:
    // super.beginArcOn();

    this.im.writeLine(`: CALL CUSTOMARCON;`);
  }

  endArcOn() {
    // Do nothing
  }

  beginArcOff() {
    this.im.writeLine(`: CALL CUSTOMARCOFF;`);
  }

  endArcOff() {
    // Do nothing
  }
};