Alphasense OPC-R1 - Page 31

072-0500 Alphasense User Manual
OPC-R1 Optical Particle Counter Issue 1
Alphasense Ltd Page 31 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
0x32 0xF3
0x32 PM_A Byte0 PM_A is a float
variable occupying 4
bytes. Units are ug/m3.
0x32 PM_A Byte1
0x32 PM_A Byte2
0x32 PM_A Byte3
0x32 PM_B Byte0
PM_B is a float variable occupying 4
bytes. Units are ug/m3.
0x32 PM_B Byte1
0x32 PM_B Byte2
0x32 PM_B Byte3
0x32 PM_C Byte0
PM_C is a float variable occupying 4
bytes. Units are ug/m3.
0x32 PM_C Byte1
0x32 PM_C Byte2
0x32 PM_C Byte3
0x32 Checksum Byte0 Checksum is unsigned 16bit integer.
0x32 Checksum Byte1
Save
Configuration
Variables in non-
volatile memory
0x43
0x43 0x31 Suggest that 10 ms be used as
delay between command byte and
following byte.
0x43 0xF3
0x3F 0x43 Initial command byte must be
followed by sequence of bytes
(shown in red).
0x3C 0x3F
0x3F 0x3C
0x3C 0x3F
0x43 0x3C
Check Status
0xCF
0xCF 0x31
0xCF 0xF3
Reset
0x06
0x06 0x31
0x06 0xF3
Enter bootloader
mode
0x41
0x41 0x31
0x41 0xF3