CNCCodes JSON Schema
This project is a schema definition for using JSON to store description and usage information about G & M codes. It was developed out of a necessity for G-Code Reference. It will be updated as the needs arise for the various types of G/M codes and various Machine Tools or 3D Printers.
Latest NPM Version: v0.3.0
Latest Draft Schema Version: 2022-07
Previous Versions: 2022-06
Schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"$id": "https://appliedengdesign.github.io/cnccodes-json-schema/draft/2022-07/schema",
"title": "G/M Code Dictionary",
"description": "JSON Schema for CNC G & M Codes",
"type": "object",
"required": [
"title",
"description",
"type",
"machineType"
],
"properties": {
"$schema": {
"description": "Link to this schema",
"type": "string"
},
"title": {
"description": "Descriptive title of the JSON Reference",
"type": "string"
},
"description": {
"description": "Description of the JSON Reference",
"type": "string"
},
"keywords": {
"description": "An Array of string keywords describing the JSON Reference (Optional)",
"type": "array",
"items": {
"type": "string"
}
},
"type": {
"description": "The type of code (G or M)",
"type": "string",
"enum": [
"gcode",
"mcode"
]
},
"machineType": {
"description": "The type of CNC machine",
"type": "string",
"enum": [
"edm",
"mill",
"lathe",
"laser",
"printer",
"swiss"
]
},
"variant": {
"description": "Defined if G/M Codes are for specific MTB/3DP Variant. (Must be lower case, 3-8 characters)",
"type": "object",
"properties": {
"name": {
"type": "string",
"minLength": 3,
"maxLength": 8,
"pattern": "[a-z0-9]"
},
"remove": {
"type": "array",
"items": {
"type": "string"
},
"uniqueItems": true
}
}
},
"codes": {
"description": "Individual G/M Codes",
"type": "object",
"patternProperties": {
"^G|^M": {
"type": "object",
"properties": {
"category": {
"description": "Category for the code",
"type": "string",
"enum": [
"motion",
"coordinate",
"compensation",
"canned",
"other",
"mcode"
]
},
"modal": {
"description": "Modal / Non-Modal (boolean)",
"type": "boolean"
},
"shortDesc": {
"description": "A short description of the code",
"type": "string",
"minLength": 3
},
"desc": {
"description": "A longer description with markdown formatting",
"type": "string",
"minLength": 3
},
"parameters": {
"$ref": "#/$defs/parameters"
}
},
"additionalProperties": false,
"required": [
"category",
"shortDesc"
]
},
"additionalProperties": false
},
"minProperties": 1
}
},
"additionalProperties": false,
"$defs": {
"parameters": {
"description": "An array of possible parameters to the code",
"type": "object",
"patternProperties": {
"^[A-Z]{1}": {
"type": "object",
"properties": {
"shortDesc": {
"description": "A short description of the parameter",
"type": "string",
"minLength": 3
},
"desc": {
"description": "A description of the parameter",
"type": "string",
"minLength": 3
},
"optional": {
"description": "Parameter is required (boolean)",
"type": "boolean"
}
},
"required": [
"shortDesc",
"optional"
],
"additionalProperties": false
}
},
"minProperties": 1
}
}
}Goals
Provide a an accurate JSON Schema to validate JSON files containing G & M code information.
Usage
Use the schema in your JSON that describes a set of G & M codes in your project (Or use our gcode-reference project) by adding https://appliedengdesign.github.io/cnccodes-json-schema/draft/2022-06/schema to your $schema reference in your JSON file.
Alternatively, you can install this as a package inside of your Javscript or Typescript project:
Install the latest version:
npm install @appliedengdesign/cnccodes-json-schema
Reference the schema file from node_modules:
node_modules/@appliedengdesign/cnccodes-json-schema/dist/schema/cnccodes.schema.json
Or use directly in script applications:
// Import the Schema
import { cncCodesJSONSchema } from 'cnccodes-json-schema';
// OR
const cncCodesJSONSchema = require('cnccodes-json-schema');
// Use schema with AJV
const Ajv = require('ajv').default;
const validate = ajv.compile(cncCodesJSONSchema);Issues
If you find any bugs or issues with the package, please create a new GitHub issue.
Contributing
For information on contributing, please refer to the CONTRIBUTING doc for workflows and best practices.
About Applied Eng & Design
We are a full service engineering and design firm, specializing in CAD/CAM, CNC milling, rapid prototyping, training and more. We also like to dabble in Arudino / RaspberryPi projects, electronics, drones and robotics projects! Subscribe to our YouTube channel for videos on our projects, screencast tutorials, and more!
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License
This extension is licensed under the MIT License.