See It in Action
A modern, intuitive interface for professional Modbus testing and simulation.
Address Scanner
Live Charts
Connection Setup
Test, debug, and simulate Modbus devices without physical hardware. Live data monitoring, fault simulation, and real-time register testing. Master + Slave modes included — no subscriptions, no separate purchases.
Windows 10/11 · 64-bit · Free 30-day trial · No credit card · Download page →
The homepage now frames the tool around concrete engineering use cases instead of only technical features.
Use it to validate device communications, inspect frames, and debug register behavior without waiting for field hardware.
Simulate slave devices or poll real equipment during factory acceptance, QA, and internal support workflows.
Diagnose connection issues faster, compare expected vs actual values, and isolate protocol problems on site.
Conversion improves when the buyer can see the business case immediately.
You do not need to buy separate tools just to simulate one side and test the other.
The site now highlights the total cost story earlier because budget-conscious engineering buyers compare long-term tool spend.
Diagnostic tooling, frame visibility, and scanning reduce the time spent guessing where communication is failing.
A paid engineering tool needs visible trust near the top, not only a feature list.
Built by an industrial automation engineer with 20+ years in PLC, SCADA, and protocol implementation.
Download the 30-day trial, validate the workflow on your own setup, then buy only if it fits your environment.
Secure payment, license delivery by email, and a 30-day money-back guarantee reduce buyer risk.
Desktop simulation + cloud monitoring — everything you need to build, test, and monitor industrial Modbus systems.
Professional Modbus RTU, TCP, ASCII & UDP simulator for Windows. Master + Slave in one app. Test PLCs and SCADA without physical hardware.
Web-based SCADA monitoring. Connect Modbus, MQTT & OPC UA devices to live dashboards from any browser. No software to install.
Purpose-built Modbus cloud monitoring. Multi-device, multi-org dashboards with real-time telemetry, alarm rules, and subscription billing.
Connect PLCs, energy meters, and industrial sensors to cloud dashboards. Multi-org with gateway token auth and role-based access control.
Full-featured SCADA system as a desktop app. HMI designer, Modbus polling, alarms, historian — no internet or server required.
A modern, intuitive interface for professional Modbus testing and simulation.
Address Scanner
Live Charts
Connection Setup
Professional-grade diagnostic tools now included — capabilities that competitors charge extra for or don't offer at all
See the actual protocol bytes in your communication log. Every TX/RX frame displayed in hex format for deep protocol inspection.
Inject Modbus errors in Slave mode to test your Master's error handling. Choose from 11 exception codes with 4 flexible trigger modes.
Optimize data collection beyond simple fixed intervals. Burst mode for rapid sampling, Adaptive mode auto-adjusts to network conditions.
Click any frame for deep analysis. Automatic parsing, CRC validation for RTU, field-by-field breakdown, error detection.
Competitors either don't have them or charge $50-100+ extra for similar diagnostic tools
Direct pricing. No marketing overhead. No subscriptions. Just great software.
One tool. Both sides of the protocol. Full visibility. Master + Slave included — competitors charge separately.
TCP, UDP, RTU, ASCII, RTU-over-TCP, ASCII-over-TCP, RTU-over-UDP, ASCII-over-UDP. RS-485 RTS toggle and local echo support.
FC01-06, FC08 Diagnostics, FC11 Event Counter, FC15/16 multi-write, FC17 Report Server ID, FC22 Mask Write, FC23 Read/Write, FC43 Device Info.
Real-time line charts with up to 8 simultaneous address traces. Color-coded, auto-scrolling, time-based display.
16-bit signed/unsigned/hex/binary/BCD, 32-bit float (4 byte orders), 64-bit double, 32/64-bit long, and ASCII string.
Log to CSV or XLSX in real-time. Print or export to PDF. REST API for Excel/VBA integration. Full communication logger with TX/RX hex data.
NEW: Raw frame analysis, exception injection, burst/adaptive polling, frame-level diagnostics. PLUS: Test Center, Address Scanner, color rules, scaling/offset, broadcast mode, ENRON/DANIEL addressing.
21+ display formats with 4 byte-order options. Scaling, offset, and conditional color rules.
Pay once. Own forever. No subscriptions. No annual fees. No hidden costs. Both Master & Slave modes included.
Download includes a 30-day free trial. No credit card required.
Windows 10/11 · 64-bit · 118 MB
Windows SmartScreen Warning?
After downloading, Windows may show a "Windows protected your PC" warning. This is normal for new software. To install:
1. Click "More info"
2. Click "Run anyway"
The app is 100% safe — no malware, no adware.