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party is strictly prohibited.
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Odometer Input
The AITP also provides Odometer functionalities to the applications, if car odometer signal
(distance pulses) is connected. Travelled distance can be either read, or read & reset by DLL
functions. This can be done either by polling or activating a trigger so that is the AITP that
periodically sends odometer info to the customer application, using the AITP libraries.
Shutdown
Shutdown sequence is very important for a reliable behavior of the system when in operation. AITP
manages the shutdown sequence, signaling to the applications that the device is about to be pow-
ered off.
The customer application should read this signal (the “IPRESHUT” digital input), and when is High it
should prepare to power off, closing all opened fi les and terminating every disk activity. If connected
to its central station, it can send a logout message.
Shutdown time is by default 10 seconds, but can be increased from AITP setup.
When the shutdown time is elapsed, the AITP powers off the modem and all devices, it waits
for disk activity to stop, and fi nally powers off the device.
Shutdown sequence can be started by AITP (power button, engine…) or by the user applica-
tion, sending the AITP shutdown or restart with the AITP DLL.
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