SDT 5000 User Manual
Document MBUD-0109v11
3.2 Events
The SDT 5000 provides a number of events that can be configured to generate messages to a host.
The events supported include: Alarm 1, Alarm 2, wakeup, battery low, ignition, DTR, Analog input
threshold, RTU buffer overflow, user generated event.
Each event can be individually enabled. The default is disabled. The events are placed in a single
queue.
Several of the events support generating messages to the host when the events are cleared as well as
becoming active.
3.2.1 EVENT TYPES
The ‘alarm 1’ and ‘alarm 2’ events are associated with the digital inputs and can be configured
active high or active low.
The ‘wakeup’ event is generated based on a configurable time schedule. The start time, end time
and period are all configurable parameters. The wakeup event is intended to allow the unit to
report periodically. Normally this event is used in conjunction with low power modes. In
“Transparent Mode”, this event is also used as a trigger to force a message retry when the SDT
5000 is configured.
The ‘battery low’ event is generated when the input power voltage is less than a configured value.
The ‘ignition’ event is generated in response to changes to the ignition input. The ignition line is
used to control power to the SDT 5000. This event can be active high or active low. A clear
message can be sent.
The ‘DTR’ event is generated in response to changes to the RTU Port DTR signal. This event can
be active high or low. A clear message can be sent.
The ‘Analog input (AIN)’ event is based on two threshold values. A minimum threshold and a
maximum threshold define the range of ‘normal’ values. If the analog input is outside of the
range the analog input event is generated. A hystersis value is defined to prevent multiple events
when the input value with ripples around a threshold value. If the minimum threshold is less than
the maximum threshold the event is generated when the analog input is less than the minimum
threshold or greater than the maximum threshold. If the minimum threshold is greater than the
maximum threshold the event is generated when the analog input is between the minimum and
maximum threshold values.
The ‘RTU buffer overflow’ event is based on the “Transparent mode” RTU input data buffer.
When the RTU buffer overflows and data is lost this event is generated.
The ‘user generated’ event is generated by the explicit command on the command line:
>evtuser
OK
Version 1.1, 03/24/06
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