Current Windows desktop application
ModbusLab software documentation
These guides describe the simulator and RTU-to-SNMP gateway implemented in the current application. They are separate from the vendor-neutral Learn Modbus protocol references.
Create and run an RTU simulation
Start with a project, add a device, set its register map and serial connection, then inspect traffic.
Open the setup guideConfigure the RTU-to-SNMP gateway
Choose an RTU source, map points to OIDs, set access and polling, and query the SNMP agent.
Open the gateway guideUse bundled device profiles
Understand profile contents, import and export projects, and verify a map against a real target.
Open the profiles guideCurrent product scope
The application runs on 64-bit Windows 10 and Windows 11. Its simulator communicates as a Modbus RTU server on a serial port. The gateway polls Modbus RTU as a master and exposes configured values over SNMP v1/v2c. The current repository does not implement Modbus TCP or ASCII transport and does not include a public installer URL.
For protocol behavior, refer to Modbus RTU framing, function codes and register addressing.