I'm working with the alarm and event log. In the case of a digital variable, I have programmed an alarm if the digital variable is activated. The software alerts me with a sound and the event is logged. Then I deactivate the variable and when I re-activate it, the alarm does not occur, even though I had previously recognized or deleted the event.
I have uploaded the application on my smartphone and the protocol used is Modbus TCP.
Is there any dead time associated with the reactivation of the same alarm or something is failing?