Sutter Lambda DG-4PLUS, Руководство по эксплуатации

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LAMBDA DG-4 PLUS & DG-5 PLUS OPERATION MANUAL – REV. 3.05B (20131009)
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should not be a significant problem in routine operation of a system, but it can provide
considerable frustration when developing and testing the control program. Test the WAIT
function with simple programs before you use it. Make sure that you will not lose important
data if you are forced to reboot.
4.1.8 Shutter Control
The “shutter” is treated as a special FILTER POSITION whose Galvanometer values are
assigned to FILTER NUMBER 0. These values set the Galvanometers so that the light path
is interrupted, and, therefore act as a shutter when the FILTER NUMBER 0 is selected. The
shutter is effectively opened by selecting the desired FILTER NUMBER. If, however, in
writing a routine to control the DG-4 you wish to return to the last FILTER NUMBER used
but do not want to keep track of that value in your program, shuttering can be done using
the CLOSE SHUTTER and OPEN SHUTTER commands. OPEN SHUTTER will
automatically return the Galvanometers to whatever FILTER NUMBER was last selected
before being closed by the CLOSE SHUTTER command. The mechanical effect is the same as
selecting FILTER NUMBER 0 to close the shutter followed by the desired FILTER
NUMBER to open the shutter.
Table 4-8. Shutter open and close commands.
Command Value
(Decimal,
hexadecimal,
binary)
Description
Open
Shutter
170
AA
10101010
Moves the light path away from Filter 0 (where the light is blocked) to
the filter position at which the light path was positioned prior to issuing
the Close Shutter (172) command.
Close
Shutter
172
AC
10101100
Moves the light path from the current filter position to Filter 0, where
the light is blocked. The original filter position is stored so that when the
Open Shutter (170) command is issued, the light path is moved from
Filter 0 back to the original position.
4.2 Serial Interface
4.2.1 Connecting to the Lambda DG-Series Serial Input
RS-232 serial control of the Lambda DG-4 is provided through a 9-pin connector on the rear
of the controller cabinet. Only the ground and the two data lines are connected: the hardware
control lines are not connected. This cable should not be used simultaneously with a parallel
port cable connected to the DG-4.