mojave – macOS with SMB Server: Timeout value?

I have a NAS with SMB sharing and a macOS 10.14.6 client. How much time should the client be able to stay connected to the SMB network share (wired, of course not via WLAN)?

My computer was disconnected like once a week and I want the drive to be mounted at all times. I searched in / var / log to no avail.

Does anyone have information about this?