Chapter 10. Drawings, Schematics, and Pin Assignments
EQ-77X LDLS® Operation Manual
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10.5 Serial Interface Commands
The RS-485 serial interface is provided for user adjustment of laser operating power, in order to increase or decrease
light output. The
EQ-77X
lamp head is shipped with the laser power set to a factory default value of 100% of full scale
power. Laser power can be increased or decreased in increments of 0.5% of full scale. The following describes the
serial commands and their functions.
Commands consist of a single ASCII character, case-sensitive. This can be transmitted to the
EQ-77X via a terminal
emulation program, or the user's control system. Response from the
EQ-77X will be a string of ASCII characters,
format depending on the command issued.
The following table describes the serial commands and their functions.
Command Character
Function
Reply from
EQ-77X
U
Increases the present laser power setpoint by 0.5%
of full scale
Power = XX.X%
D
Decreases the present laser power setpoint by 0.5%
of full scale
Power = XX.X%
Q
Queries the value of the present laser power
setpoint (in % of full scale)
Power = XX.X%
F
Resets laser power setpoint to factory default value
Power = XX.X%
B
Saves present settings to flash memory. This
command should be issued after the settings are at
their desired values. If not, changes will be lost if
power to the
EQ-77X is interrupted.
Calibration data copied to FLASH
Memory.
H
Queries the bulb operating hours
XXXX.X hours
Z
Zeroes the bulb operating hours
Send 'z' within 10 sec. to confirm
z
(Confirm zero within 10 sec)
Bulb hours zeroed & flash saved
Serial Commands and Functions
Table 9.
