01 / FILES
Open existing projects
Read compatible poll, simulator, and workspace files—including supported historical formats.
Industrial communication, made dependable
Open what you have.
Work anywhere.
Sykel Modbus Master and Sykel Modbus Simulator give engineers a modern, cross-platform way to read, write, simulate, and troubleshoot Modbus systems.
macOSLinuxWindowsOffline activation
One toolkit, two essential jobs
Built for the work before, during, and after the wire comes alive.
Use the Master to work with real devices. Use the Simulator when a device is not on the bench, not finished, or intentionally misbehaving.
01 / Sykel Modbus Master
See what the bus is actually doing.
Poll and write data, inspect traffic, chart live values, log results, scan devices, and test raw protocol behavior.
Explore Modbus Master →
02 / Sykel Modbus Simulator
Make a device before the device exists.
Simulate registers and coils, expose multiple devices, introduce faults, and give masters something realistic to talk to.
Explore Modbus Simulator →
A practical migration path
Keep the files, keyboard habits, and workflows that already work.
Compatibility is not a footnote. It is a way to open an existing project, on the platform you actually use, without starting over.
02 / PLATFORM
Native where you work
Move from a Windows engineering station to a Linux test rig or a Mac laptop without changing tools.
03 / CONTROL
Automate the edges
Local JSON control, CLI support, and offline licenses fit naturally into test benches and restricted networks.
Protocol-first by design
Serious about the details that quietly break a test.
Sykel is not a visual refresh of yesterday’s tooling. It is a clean-room implementation that keeps useful workflows while defaulting to correct protocol behavior and secure transport choices.
- Serial RTU and ASCII, TCP, UDP, and encapsulated serial transports
- Secure Modbus/TCP with certificate verification by default
- Traffic, scans, diagnostics, charts, CSV and XLSX logs
- Local control API for test and automation environments
Simple ownership
Two tools. One perpetual license. No subscription.
Every license includes Sykel Modbus Master and Sykel Modbus Simulator, works offline after activation, and is not restricted to a particular product version.
Individual
$99
One named engineer
- Both Sykel Modbus tools
- Unlimited installs for one user
- All future product versions
- Offline activation
Team
$349
Five named engineers · $69.80/user
- Everything in Individual
- Five named user licenses
- One purchase, one bundle
- Built for controls and test teams
Site
$2,499
One site · 50-mile radius
- Unlimited use at one location
- Nearby facilities and home offices
- No seat administration
- Immediate online purchase
Perpetual licenses include all future versions released during the lifetime of the products. Site licenses cover your organization’s personnel within 50 miles of the licensed site address.