We are reading Modbus registers from a TCP slave without any problems.
We would like to use the modbus alarms to send as an SMS - the problem is that the alarm is sent each and every time the system polls the slave if the trigger value is seen.
Is it possible for the alarm to only send once after detection?
Obviously, for a remote alarming system we do not want to send an SMS every time the RUT scans and the alarm state has not changed.