Industrial Communication Testing

Modbus Poll Simulator

A professional desktop tool for testing, debugging, and simulating Modbus TCP & RTU devices. Master and Slave modes in one application.

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9Function Codes
TCP + RTUProtocols
Real-timeLive Charts
Master + SlaveDual Mode

Everything You Need for Modbus Testing

One tool. Both sides of the protocol. Full visibility.

⚙

TCP & RTU Support

Connect via Modbus TCP/IP or RTU serial (RS-232/RS-485). Configurable baud rate, parity, stop bits, and timeout.

▦

All Standard Function Codes

FC01-04 read operations, FC05/06 single writes, FC15/16 multiple writes, and FC23 read/write combined.

◫

Live Data Charts

Real-time line charts with up to 8 simultaneous address traces. Color-coded, auto-scrolling, time-based display.

☷

Data Grid View

Interactive register table with double-click editing. Display as unsigned, signed, hex, binary, or Float32.

✉

Communication Logger

Full TX/RX protocol logging with timestamps, hex data, and operation descriptions. Debug with confidence.

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Multi-Poll Scheduler

Create multiple poll definitions with independent intervals, slave IDs, and function codes running simultaneously.

Two Modes. One Application.

Master Mode

Poll & Control Devices

  • Connect to any Modbus slave device
  • Configure multiple simultaneous polls
  • Read coils, discrete inputs, holding and input registers
  • Write single or multiple coils and registers
  • Adjustable polling intervals (ms precision)
  • Slave ID range 1-247
Slave Mode

Simulate Devices

  • Emulate a Modbus slave for testing masters
  • Configurable memory: up to 10,000 registers per type
  • Edit register values in real-time
  • View incoming request log with function codes
  • TCP server or RTU serial responder
  • Configurable slave ID

Flexible Data Display

View register data in the format that matters for your application.

Unsigned Decimal
Signed Decimal
Hexadecimal
Binary
Float32 (IEEE 754)

Simple Pricing

One-time purchase. Perpetual license. Free lifetime updates & support.

1 License
₹4,999
per license · one-time
  • Master & Slave modes
  • TCP and RTU support
  • All 9 function codes
  • Live charts & data grid
  • Communication logger
  • Multi-poll scheduler
  • Free lifetime updates
  • Email support
Most Popular
2 – 9 Licenses
₹3,999
per license · one-time
  • Everything in single license
  • 20% volume discount
  • Separate key per user
  • Team onboarding support
  • Priority email support
10+ Licenses
₹2,999
per license · one-time
  • Everything in single license
  • 40% volume discount
  • Separate key per user
  • Dedicated account support
  • Priority email support

All licenses are perpetual — pay once, use forever. License key delivered instantly via email.

Get Started

Download includes a 15-day free trial. No credit card required.

Download for Windows

Windows 10/11 · 64-bit · ~80 MB