Deltec Cozmo Uživatelský manuál stáhnout pdf (Strana 130)

Technical Information

118

ent from the written data, the software stops insulin

delivery, initiates an alarm (either beep or vibrate) and a

system fault alarm message appears in the display.

Motor circuit check

At power up and at regular intervals thereafter, the

motor circuit is checked to ensure that no power is

being applied to the motor unless the motor is actually

on. If the software detects power being applied to the

motor at any other time, it initiates an alarm (either

beep or vibrate) and no longer attempts to deliver

insulin. During every pump activation, the software

checks to see whether the motor completes 1 activation.

If the motor fails to turn, or fails to complete an activa-

tion, the software stops insulin delivery, initiates an

alarm (either beep or vibrate) and a system fault alarm

message appears in the display.

Keypad encoder check

Every time the software receives data from the keypad,

it is checked. If the data is not a valid keypress, the

software disregards the keypress.

Data handling and software safety

features

Data stored in RAM

Before use, data associated with delivery and stored in

RAM is tested by calculating a CRC on the data and

then comparing it with CRC stored in the data. If the

stored and calculated data do not match, the software

stops insulin delivery, initiates an alarm (either beep or

vibrate) and a system fault alarm message appears in the

display.

Data stored in NOVRAM

Before use, data associated with delivery and stored in

NOVRAM is tested by calculating a CRC on the data

and then comparing it with CRC stored in the data. If

the stored and calculated data do not match, the soft-

ware stops insulin delivery, initiates an alarm (either

beep or vibrate) and a system fault alarm message

appears in the display.

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Deltec Cozmo Uživatelský manuál Strana 130