CHAPTER 4. COMPUTER CONTROL
Lambda beam user manual
All commands and queries and all responses from the device are followed by the line
termination string ”\r \n” (carriage return & line feed). All instructions have to be written
in capital letters.
Initializing the serial communication
The Lambda mini uses the communication settings displayed in
Table 4.2: Lambda mini communication settings
Baud rate
57600
Parity
None
Data bits
8
Stop bits
1
To initialize the controller, send “
INIT
”. The controller responds with the return code
0 (Command successful).
Closing the communication
Send “BYE” to close the connection to the laser controller.
Turning the laser on and off
This command is used to set the and read the ”
Laser Enable
” request. The laser can only
be activated if the key switch is in the ON position and the interlock is closed.
Table 4.3: Laser Enable commands
Command/
Query
Parameter value
Return code
Return value
O=
0: Delete Enable Request
1: Set Enable Request
COMMAND_SUCCESS
PARAMETER_ERROR
-
O?
-
COMMAND_SUCCESS
0: Enable Request not set
1: Enable Request set
Temperature settings
The Lambda beam monitors the operating temperature. If it exceeds the permitted tem-
perature range, the laser is turned off to prevent damage to the module. The commands
for temperature settings are listed in
2
Not all laser systems support this function
14