Hi Andreas, We introduced a "ping" method into the API of the PlcConnection ... however I think we never implemented that in any of the protocols.
However I think we really should come up with dummy operations for each protocol which we can use to test the connection ... I mean ... even asking for a resource that doesn't exist and the PLC politely tells us so, it a good check. Chris -----Ursprüngliche Nachricht----- Von: Andreas Vogler <[email protected]> Gesendet: Donnerstag, 12. August 2021 09:31 An: [email protected] Betreff: Re: ModBus observe connection state... Never mind, seems that I can periodically check the isConnected flag… > On 12.08.2021, at 08:21, Andreas Vogler <[email protected]> wrote: > > Hi, > > How can I check the state of a connection? Especially if it is lost. > > I have a ModBus connection and when I turn off the ModBus server I do not get > any error. > > I have found the orTimeout option at the response object… > > But I want somehow detect if a connection is lost, so that I can do a > reconnect… > > Hope someone can give me an advice how this is typically done with Plc4x. > > Regard, > Andreas
