If you need help setting up an alternative tool, let me know: Which are you using? Are you testing Modbus RTU (Serial) or Modbus TCP ?
Provides a comprehensive log of sent requests and received responses for deep-level troubleshooting. The Risks of Using a Software Crack
A command-line Modbus master simulator available for Windows, Linux, Solaris, and QNX 6. While less user-friendly than GUI tools, it's a reliable free option for scripted testing.