LAMBDA 10-2 OPERATION MANUAL – REV. 2.04 (20120224)
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In Table 4-2, “Decimal Group Value Examples” are equivalent to the values of the desired
filter wheel (0 = Wheel A), switching speed (5) and filter position (7). Their binary
equivalents are shown as the “Binary Group Values”. These eight bits are the raw data,
then, that serve as a filter command to select the filter position, switching speed and filter
wheel via the Lambda 10-2 controller’s serial or parallel port.
When the controller is in the ON LINE (Remote) mode, the eight input lines on the parallel
port are examined at 50 microsecond intervals. If the value on the 8-bit input lines (pins 2 -
9) has changed from the previous query, and if the new filter group value (pins 2 - 5) are in
the range of 0 to 9, the controller will respond as commanded with a change in the filter
position of the appropriate filter wheel. In the above example (Table 4-2), Filter Wheel A will
move to Filter Position 7, using Speed 5.
4.2.2.2
Special Commands: ON LINE, BATCH, and SHUTTER Commands
When the 8-bit command is identified by the controller as a “Special Command”, the bit
pattern is interpreted as a single command encoded by all eight bits. The functions of the
special commands are described below along with the decimal, hexadecimal, and binary
values that encode them.
Table 4-3. Special command codes.
Command
Command
Command
Command
Value
Value
Value
Value
(Decimal,,
hexadecimal,
binary)
Description
Description
Description
Description
Transfer Control to
Transfer Control to
Transfer Control to
Transfer Control to
Computer (On Line)
Computer (On Line)
Computer (On Line)
Computer (On Line)
238
EE
11101110
When the controller is in the local mode, the unit will be
forced to go ON LINE if this code is sent. The input port
from which this command is received will become active.
Sending this command via one input when the other
input is active will cause the unit to change remote input
modes. WARNING: If 238 is the current command of
either input, do not send 238 via the other channel and
do not attempt to go to the local mode! In either case,
the controller will loop between modes continuously
requiring the controller to be RESET.
Batch Transfer
Batch Transfer
Batch Transfer
Batch Transfer
223
DF
11011111
The controller reads the next four commands and acts
on them in quick succession before acting on any
subsequent command.
Open Shutter A
Open Shutter A
Open Shutter A
Open Shutter A
170
AA
10101010
Opens Shutter A
Open Shutter A
Open Shutter A
Open Shutter A
Open Shutter A
Conditionally
Conditionally
Conditionally
Conditionally
171
AB
10101011
Opens Shutter A while Wheel A is stopped. The shutter
will close each time the wheel moves and then will open
again at the end of the move.
Close Shutter A
Close Shutter A
Close Shutter A
Close Shutter A
172
AC
10101100
Closes Shutter A
