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Publication no. 201102
3.2.4 Opening sequence
Start
Left and right sensors are on
and middle sensor is off.
Run motor at low speed.
Yes
Sensor status
changes
No
Unlocking
No
position
reached
Yes
Run motor at high speed.
Open
No
position
reached
Yes
Stop motor
Make an exposure
Run motor backwards at high
speed.
Position 10
reached
Start flashing the operator
display
Run motor backwards at low
speed until not moving for
0.3sec
No
Position >-3
and <3
Yes
Set position to 0
Wait for left and right seonsors
to become inactive
Stop flashing the operator
display
End
September 2003
Camera status: The opening carriage is positioned in its
The sequence is initialized when the left and right cassette
sensors are activated while the middle sensor is not.
First the motor is run to the right at a slow speed until the
finger of the carriage has entered the hole of the cassette
lid and unlocked the lid. At that point the speed of the motor
is increased to full speed.
The motor is run at full speed until the position where the lid
is considered opened. At this position the motor is stopped.
This position can be changed in the setup of the camera.
The exposure is made by switching on the background light
of the exposure display. When the exposure is done the
background light is switched off.
The motor is now run at full speed towards it's left position
until position 10 is reached. At that position the operator
display starts flashing and the speed is slowed down, The
motor run until no movement is detected for 0.3 seconds.
The motor is now considered being stopped at its left posi-
tion. The position is now checked. If it is not within -3 to 3 it
was not able to reach its left parking position and an error
message is generated. If within this range the position is set
to 0 and the exposure cycle is finished.
The right and left sensor must both be off before the oper-
ator display stops flashing and a new exposure can be
made.
During all operations it is checked that the motor is rotating.
If no pulses are read from the pulse counter for 0.3s the mo-
tor is considered stopped by force and the motor is
switched off and an error message generated.
Fail
12
NIC2-2 · Network ID Camera
left position.
Triacon AB Sweden
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