Rievtech EXM-12DC-DA-R-HMI, User Manual

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5.7.2 Digital inputs
Each one of these inputs can activate an SMS message to a predefined telephone number either in case of
HIGH or LOW input signal (up to 5 various numbers).
Basically two events can trigger an SMS message: the change from LOW-to-HIGH and the inverse, the
change from HIGH-to-LOW. One or both events can be configured to activate a message. A separate text
message can be entered for each event. For details refer to 6.8.2.2 and 6.8.2.3
With confirmation function activated:
If the SMS Relay does not receive an acknowledgement SMS within a certain preset time from the receiver,
the event message will be sent to the next receiver. This means that the device runs through the 5 allocated
receiver numbers and restarts afterwards with the first number again (The number of running loops can be
pre-defined). As soon as the device
receives a confirmation from the receivers the process is stopped. If this is not the case, the message will be
sent to the next receiver (after expiry of the preset time).
If the
confirmation is inactive, all receivers who are allocated to that event will receive a message without
repetition.
If the
confirmation code word is not activated, the phone number identification is carried out as a security
check and it is sufficient to send an empty SMS message to the x-Messenger SMS Relay.
5.7.2.1 Parallel message handling
It may occur that the status of several inputs change at the same time or within the actual running message
cycle. Every input activates its individually message.
Every change of the input status, which triggers an event message, is processed in order of the appearance.
That means that all the messages for every input will be handled individual. Several events at the same time
can trigger different messages at the same time. Example: The events “pump breakdown” and “over
temperature” (two different inputs) appear at the same time both events are processed individually and both
messages will be sent one after the other.