Alphasense OPC-R1 - Page 29

072-0500 Alphasense User Manual
OPC-R1 Optical Particle Counter Issue 1
Alphasense Ltd Page 29 of 33 February 2019
Sensor Technology House, 300 Avenue West, Skyline 120, Great Notley. Essex.CM77 7AA. UK
Tel: +44 (0) 1376 556700 - Fax: +44 (0) 1376 335899
Email: sensors@alphasense.com - Web: www.alphasense.com
Write serial
number string
0x11
0x11 0x31 Suggest that 10 ms be used as
delay between command byte and
following byte.
0x11 0xF3
SerialStr ascii char00 0x11
SerialStr is a string of 60 characters.
This string can only be written once.
SerialStr ascii char01 SerialStr ascii char00
SerialStr ascii char58 ………………………. See 072-0501 for full details
SerialStr ascii char59 SerialStr ascii char58
Read Firmware
Version
0x12 0x12 0x31 Suggest that 10 ms be used as
delay between command byte and
following byte.
0x12 0xF3
0x12 FirmwareVerMajor FirmwareVerMajor is unsigned 8bit
integer variable.
0x12 FirmwareVerMinor FirmwareVerMinor is unsigned 8bit
integer variable.
Read
Configuration
Variables
See 072-0501 for full details
Write
Configuration
Variables
See 072-0501 for full details
Read histogram
data (and reset
histogram)
0x30
0x30 0x31 Suggest that 10 ms be used as
delay between command byte and
following byte.
0x30 0xF3
0x30 Bin0 LSB Bin Counts (Bin0 - Bin15) are
unsigned 16bit integer variables.
0x30 Bin0 MSB Value of shaded bytes doesn't
matter.
0x30 ………….
0x30 Bin15 LSB
0x30 Bin15 MSB
0x30 Bin1 MToF 'MToF' is an unsigned 8bit integer
that represents the average
0x30 Bin3 MToF amount of time that particles sized
in the stated bin took to
0x30 Bin5 MToF cross the OPC's laser beam. Each
value is in 1/3 us. i.e. a value
0x30 Bin7 MToF of 10 would represent 3.33us.