Vaisala LT31 - Operation and System Commands; LT31 Commands and Command Mode

Chapter 5 ________________________________________________________________ Operation
VAISALA ______________________________________________________________________ 145
CHAPTER 5
OPERATION
This chapter contains information that is needed to operate this product.
Vaisala Transmissometer LT31 is a fully automatic instrument that does
not need any regular operation by the user. The measurement parameters
set at the factory do not usually need to be changed.
LT31 visibility messages are either send automatically or polled by the
host computer.
The LT31 system parameters can be set with the SET command or by
menu mode which is entered by the MENU command in the command
line mode. Other commands can be used to display the system status and
other maintenance data. All commands can be given either via the
maintenance line or data line. Commands given via the maintenance line
do not interfere with the message sending of the data line visibility.
LT31 Commands
NOTE
All command parameters must be separated from each other by a space
character and every command must end with pressing ENTER.
Entering and Exiting Command Mode
Before any commands can be given to LT31, the maintenance or data
line of LT31 has to be assigned to the operator. Otherwise, it is assigned
to automatic messages or polled communication.
OPEN Command
You enter the command mode with the OPEN command.
If no device identifier (ID) is defined, type the following:
OPEN