PL ProtoLink

ProtoLink 0.2.0 · Modbus TCP · Modbus RTU

A local tool for Modbus TCP/RTU

ProtoLink runs locally on your computer, opens in a browser, and lets you quickly test Modbus TCP/RTU devices without cloud or intermediary services

ProtoLink TCP connection interface

What ProtoLink does

A practical set of functions for connectivity checks and basic operations with Modbus devices

Modbus TCP

Modbus RTU

Read holding/input registers, coils, and discrete inputs

Write a single holding register

RTU settings: port, baudrate, parity, stop bits, byte size, timeout

For industrial automation engineers, developers, and commissioning teams

Quick start

01

Download the package for your OS

02

Install or unpack

03

Start ProtoLink

04

Open 127.0.0.1:8000

Platforms and artifacts

Windows

Available
Version
0.2.0
Filename
protolink_0.2.0_windows_x64.zip
Size
16,565,541 bytes
Requirements
Windows 10/11 x64, COM ports for RTU

MacOS

Available
Version
0.2.0
Filename
protolink_0.2.0_arm64.dmg
Size
20,476,506 bytes
Requirements
macOS arm64 (Apple Silicon), /dev/cu.* for RTU

Linux

Available
Version
0.2.0
Filename
protolink_0.2.0_amd64.deb
Size
24,623,474 bytes
Requirements
amd64, glibc 2.28+, Debian/Ubuntu/Astra-like