OPTOGAMA LPA-A v2 Series, Руководство пользователя

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4. Commands
4.1. Interface
The device can be controlled using either USB 2.0 or
RS-232 interface. The device will switch to the required
interface upon connection of the appropriate cable.
When using the RS-232 interface, the controller
communicates on the
configured baud rate (see
Command descriptions), using 8 data bits, no parity and
1 stop bit .
When the device is connected to the PC through the USB
interface, it will appear as a
Virtual Serial COM port , so
all PC side communications are interchangeable between
the two interfaces.
All communications with the device are conducted by
sending
literal ASCII string commands terminated with
the newline character \n . For example, the power can
be set to 10% by issuing a “ LPA>PWR!_10\n ” command
to which the device will respond with “ LPA>PWR_10\n ”.
4.2. Description
Command Response Comments
Example usage
User command Device response
Motion |
Power - PWR, Angle - ANG, Stop - STP
LPA>PWR? LPA>PWR_X.XXX
Command used to get the current power
value in percentages. (Read and
calculated from absolute encoder)
LPA>PWR? LPA>PWR!_45.125
LPA>PWR!_X.XXX LPA>PWR!_X.XXX
Command used to set a new power value
in percentages.
LPA>PWR!_10 LPA>PWR_10.000
LPA>PWR!_45.1 LPA>PWR_45.100
LPA>PWR!_0.07 LPA>PWR_0.070
LPA>ANG? LPA>ANG_X.XXX
Command used to get the current angle
value in degrees. (Read from absolute
encoder, 0-360 deg)
LPA>ANG? LPA>ANG_22.143
LPA>ANG!_X.XXX LPA>ANG_X.XXX
Command used to set the angle value in
degrees (0-360)
LPA>ANG!_22.5 LPA>ANG_22.500
LPA>STP! LPA>STP
Command used to stop motor instantly.
Device could be used normally, homing is
not require.
LPA>STP! LPA>STP
Calibration
|
Calibration - DEF
LPA>DEF! LPA>DEF_offset
Command used to define current
waveplate position as minimum power
position. Used for calibration.
LPA>DEF! LPA>DEF_34.067
LPA>DEF? LPA>DEF_offset
Command used to get an offset value
from zero to minimum power. Used for
calibration.
LPA>DEF? LPA>DEF_34.067
Settings
|
Baud rate - BAUD, Buttons lock - KEYLOCK, Default settings - LDF
LPA>BAUD? LPA>BAUD_baud rate Command used to get baud rate. LPA>BAUD? LPA>BAUD_115200
LPA>BAUD!_baud rate LPA>BAUD_baud rate
Command used to set baud rate. 115200
by default. Available speeds:
115200, 57600, 38400,
19200, 9600, 4800.
Other values are ignored.
LPA>BAUD!_57600 LPA>BAUD_57600
LPA>LDF! LPA>LDF Command used to load default settings. Device after this command must be recalibrated .
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