A professional desktop tool for testing, debugging, and simulating Modbus devices across TCP, UDP, and Serial protocols. Master and Slave modes bundled in one application — no need to buy separate tools.
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.
Test Center for raw frame sending, Address Scanner for device discovery, conditional color rules, scaling/offset, broadcast mode, and ENRON/DANIEL addressing.
21+ display formats with 4 byte-order options. Scaling, offset, and conditional color rules.
One-time purchase. Perpetual license. Free lifetime updates & support. Master + Slave included.
Save vs. competitors: Others charge $129 for Master alone + $129 for Slave = $258 total.
You get both in one tool for $99 — with more protocols, more function codes, and more display formats.
Download includes a 15-day free trial. No credit card required.
Download for WindowsWindows 10/11 · 64-bit · ~80 MB