![THORLABS PRO800 Series Operation Manual Download Page 28](http://html.mh-extra.com/html/thorlabs/pro800-series/pro800-series_operation-manual_1110711028.webp)
24 Communication with a PC
_________________________________________________________________________________
______________________________________________________________________________________________________
© 2012 Thorlabs
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 PRO8000 (-4) / PRO800 system is written in a language
as e.g. BASIC, then these IEEE488 control signals are automatically transmitted to
the PRO8000 (-4) / PRO800 according to the used driver software and do not have
to be explicitly produced in the control program.
These functions have also already been implemented to Thorlabs LabView® or
LabWindows® drivers.
When receiving the IEEE488 bus commands [GET], [LLO], [GTL], [DCL] and [SDC]
the PRO8000 (-4) / PRO800 will execute the following functions:
[LLO]
Local
Lockout
The command [LLO] once sent will disable the key
LOCAL
throughout further
operation.
Return to LOCAL mode (manual operation) is only possible with the command [GTL]
(see below.).
[GTL]
Go To Local
The command [GTL] will return the PRO8000 (-4) / PRO800 to LOCAL mode
(manual operation). Previously set values for laser current, laser power, temperature
etc. remain valid.