Light gate tests
PRINCESS – Edition: 17.02.2005
68
FIELD SERVICE MANUAL
15.3 Light gate tests
Five light gates are used to position the selection sledge. These sensors scan certain movements.
The name of a light gate corresponds to the principal movement.
1. Vertical-Lineal-Left (VLL), movement LH side
2. Horizontal-Lineal-Left (HLL), movement LH side
3. Vertical-Lineal-Centre (VLC), movement center
4. Horizontal-Lineal-Right (HLR), movement RH side
5. Vertical-Lineal-Right (VLR), movement LH side
15.3.1 Light gate snapshot, level 4 button 7
To start the test: Press selection button 7.
By pressing selection button 7 a
‘snapshot’ of the actual gate
state will be made. Then this
state will be displayed in a co-
ded form.
An interrupted gate sends a ‘0’
to the corresponding digit in the
display.
Two gates are combined in the
second and fourth digit (from
RH side) of the display.
Both left and right gates (VLL,
VLR) send a ‘2’ if open to the
corresponding digit, the others a
‘1’. This value adds itself.
The RH digit is always 0.
To exit the test: Press selection
button R.
VLL
HLL
HLR
VLR
Ý
VLL
open
HLL
inter-
rupted
VLC
interrupted
HLR
open
VLR
open
1
22
RH digit is always 0
Example:
1
VLC
1
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