Timeout daemon message

At random intervals, I’m getting the following warning message at the gateway system console:

TimeoutDaemon : ScheduledRequest[com.inductiveautomation.xopc.drivers.siemens.requests.ReadRequest@d74f83c] request with key “24045” failed due to timeout.
…and also…
S7300Driver : Socket connection closed; DriverState was Connected.

java.io.IOException: End of stream reached.
at com.inductiveautomation.iosession.socket.AsyncSocketIOSession.run(AsyncSocketIOSession.java:74)
at java.lang.Thread.run(Thread.java:748)

How can I to understand which device and tag generate this issue ?