I don't understand this. What is a "connection" when using Modbus RTU?

Yes, u are right, not connection but response. The timeout is used by the client to determine how long it waits for a response from the server.

 

Hello, how are you?

I liked your software, I also made a Modbus simulator (Master only).

However, at the moment it is not open source, only Freeware.

In the group I have about the software, I once recommended your software to those who are used to the classic style of Modscan as a good free alternative to Modscan.

 

The application continues to evolve.
The new version is available at https://github.com/sanny32/OpenModScan/releases