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Functions
i-modul ISDN HIX V4
6.1
Querying the Alarm Inputs
The i-modul ISDN HIX V4 provides two digital inputs, which trigger an alarm
condition when connecting to ground. The status of these alarm inputs can be
queried via the respective S register using an AT command. The i-modul ISDN HIX
V4 can send a message in case of an alarm. This message can be sent via data
connection, as SMS or as e-mail via a service provider. The i-modul ISDN HIX V4
evaluates a connection of the input to ground as alarm. If no positive edge is
counted at least 4 seconds after the negative edge, an alarm will be processed. A
pause of at least 5 seconds is necessary after resetting the input before a new
alarm can be triggered.
Figure 7: Pulse evaluation
Configuration with AT commands
In order to query the condition of
alarm input 1, use the command
ATS17?
In order to query the condition of
alarm input 2, use the command
ATS18?
The value "1" indicates an open
input and the value "0" indicates
a closed input. The response on
the right indicates an open input
for example.
001
OK
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