ModbusTCP Connection keep open or not?

[cattale93]

Hello,

We are employing the modbus-serial library but we have some doubts:

• If we perform a reading once per day is it better to close and reopen the connection each time? If yes why?
• If we keep a connection instantiated and opened but we do not read/write data can cause some problem? Consider that we do not set the timeout in the option parameter.
• Our concern is: if we let the connection open could it be automatically closed?
• In addition, does the opened connection generate traffic on the PLC and on the network (even if not used)?

Thank you all for help.

[timothycuenat-lam]

I have the same questions 😅