4.2 IEEE488 Interface
LDC340 / Page 32
4.2.4 IEEE488 bus commands
To communicate via the IEEE488 bus the standard control signals [MLA], [MTA],
[UNL], [UNT], [ATN], [REN], [SPE], [SPD] are used.
If the control program for the LDC340 is written in a basic language as e.g. BASIC,
then these IEEE488 control signals are automatically transmitted to the LDC340
according to the used driver software and do not have to be explicitly produced in the
control program.
Also in the LabVIEW
®
- or LabWindows/CVI
®
-drivers from
Thorlabs GmbH
these
functions are implemented (refer to our homepage:
http://www.Thorlabs GmbH.com
for latest driver updates).
When receiving the IEEE488 bus commands [GET], [LLO], [GTL], [DCL] and [SDC]
the LDC340 will execute the following functions:
[LLO]
Local
Lockout
The command
[LLO]
will disable the button
. Switching back into LOCAL mode
(manual operation) is only possible with the command
[GTL]
(see below.).
[GTL]
Go To Local
The command
[GTL]
switches the LDC340 into LOCAL mode (manual operation).
The previously set values for laser current, laser power etc. will no more be valid. The
set values are determined by the main dial knob.
