Alarm output is corresponding to the alarm output port of device I/O cable.
Figure 4-4
Alarm input and output figures
Figure 4-5
Alarm input: input signal is idle or grounded; the device can collect different states of alarm input port. Input
signal is connected to 3.3V or idle, device collects logic “1”; input signal is grounded, the device collects
logic “0”.
Figure 4-6
Alarm output: port ALARM_OUT and ALARM_COM form a switch, which can be used to provide alarm
output. Normally the switch is on, the switch will be off when there is alarm output.
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