@modbus-ts/transport-udp

Node.js UDP transport adapter for Modbus traffic.

Installation

pnpm add @modbus-ts/transport-udp

Core Exports

• UdpTransportOptions
• UdpTransport

Minimal Example

import { UdpTransport } from '@modbus-ts/transport-udp'

const transport = new UdpTransport({
  host: '127.0.0.1',
  port: 502,
  bindAddress: '0.0.0.0',
  bindPort: 0,
})

await transport.connect()
await transport.send(new Uint8Array([1, 3, 0, 0, 0, 2, 196, 11]))
await transport.close()

Behavior

• Datagram-based transport
• Works well with RTU/ASCII payload frames
• Emits received packets through onData

Packages

• high-level Modbus client
• shared contracts, types, and errors
• FC1/FC2/FC3/FC4/FC5/FC6/FC15/FC16 frame encode/decode for TCP/RTU/ASCII
• serial request queue with priority
• polling engine and range merge
• Node TCP transport with reconnect
• Node UDP transport
• browser WebSocket transport with reconnect
• typed Electron main/renderer bridge
• Electron IPC transport adapter
• WebSocket to TCP binary relay gateway
• register-value codec helpers
• shared async and comparison utilities