Impex LD8000, Руководство пользователя

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Laser Diode Driver LD8000
16
Ver. 1.0
5. Protocol description
The main microcontroller of the LD8000 comunicates using the UART (serial) interface. The
device further has a built in serial to USB converter. The USB driver software implements a
virtual serial interface at the PC side. So it comes out to a pure serial communication. At the
current revision, the transfer parameters are fixed to 76800 baud, no parity, 8 data bits, 1 stop bit.
The LD8000 acts as a slave, i.e. it only answers to requests from a master (PC) and does not send
any data by itself. Every transaction is terminated with the carriage return <CR> character
(ASCII: 13). Every instruction is echoed and responsed with the actual value. So to check a
parameter, only the pure instruction is sent. To set a new value, the instruction followed by the
new value is send and compared with the received answer. Please note, that some instructions are
read-only, i.e. the possibly transmitted value is ignored. Decimal separator is the dot (.). In
binary values, a single character T (true) means ON and an F (false) means OFF.
Examples
Set the laser target current to 1000mA
Master: RLCT1000<CR>
LD8000: RLCT1000<CR> 1000<CR>
Check the laser current
Master: RLCA<CR>
LD8000: RLCA<CR> 1000<CR>
Instructions list
Instruction LCD Text Target Description Type Unit
RLMXN
Invert Gate
Laser Invert Gate Signal bool
RLPCA
Photo Curr
Laser Photo Current Actual uint16 uA
RLPCT
Photo Curr
Laser Photo Current Target uint16 uA
RLPCC
Ph Cur Contr
Laser Photo Current Control bool
RLMBN
Burst Pulses
Laser Number of Pulses in Burst bool
RLMBS
Suppr Pulses
Laser Number of Suppressed Pulses bool
RLTLU
LD Temp Max
Laser Upper Temperature Limit float °C
RLTLL
LD Temp Min
Laser Lower Temperature Limit float °C
RCTLU
LC Temp Max
Crystal Upper Temperature Limit float °C
RCTLL
LC Temp Min
Crystal Lower Temperature Limit float °C
RHTLU
LC Temp Min
Harmonic Upper Temperature Limit float °C
RHTLL
LC Temp Min
Harmonic Lower Temperature Limit float °C
RLTCP
LTC P-Factor
Laser PID-Regulator P-Factor uint16
RLTCI
LTC I-Factor
Laser PID-Regulator I-Factor uint16
RLTCD
LTC D-Factor
Laser PID-Regulator D-Factor uint16
RLTCV
LTC Max Volt
Laser Maximal TEC Voltage uint16
RLTCS
LTC SetLevel
Laser PID-Regulator Set Level uint16
RCTCP
CTC P-Factor
Crystal PID-Regulator P-Factor uint16
RCTCI
CTC I-Factor
Crystal PID-Regulator I-Factor uint16
RCTCD
CTC D-Factor
Crystal PID-Regulator D-Factor uint16
RCTCV
LTC Max Volt
Crystal Maximal TEC Voltage uint16
RCTCS
CTC SetLevel
Crystal PID-Regulator Set Level uint16
RHTCP
HTC P-Factor
Harmonic PID-Regulator P-Factor uint16
RHTCI
HTC I-Factor
Harmonic PID-Regulator I-Factor uint16
RHTCD
HTC D-Factor
Harmonic PID-Regulator D-Factor uint16
RHTCV
HTC Max Volt
Harmonic Maximal TEC Voltage uint16
RHTCS
HTC SetLevel
Harmonic PID-Regulator Set Level uint16