Lighthouse SOLAIR 3350, Operating Manual

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SOLAIR 3350, 5350 MODBUS Register Map v1.48
248083387-1 Rev 10 B-9
Note:
Particle data is
always a cumulative raw
count regardless of the
instrument’s settings.
The timestamp field indicates when the data record was recorded.
Timestamps are stored as the number of seconds since 1/1/1970, the
Unix time epoch. This value can be written directly into a C/C++
time_t data type to be used by ANSI C time functions.
Data Status Byte (30007 - 30008)
Note:
Although
MODBUS sends 4 bytes
of status information,
Lighthouse instruments
only use the first (least
significant) byte.
The registers used for the Data Status Byte are 30007 and 30008.
The bit order of the Data Status Byte is 7 to 0, where bit 7 is the most
significant bit and bit 0 is the least significant bit.
30009 unsigned integer Particle Channel 1 [high]
30010 unsigned integer Particle Channel 1 [low]
30011 unsigned integer Particle Channel 2 [high]
30012 unsigned integer Particle Channel 2 [low]
30013 unsigned integer Particle Channel 3 [high]
30014 unsigned integer Particle Channel 3 [low]
30015 unsigned integer Particle Channel 4 [high]
30016 unsigned integer Particle Channel 4 [low]
30017 unsigned integer Particle Channel 5 [high]
30018 unsigned integer Particle Channel 5 [low]
30019 unsigned integer Particle Channel 6 [high]
30020 unsigned integer Particle Channel 6 [low]
30021 unsigned integer Particle Channel 7 [high]
30022 unsigned integer Particle Channel 7 [low]
30023 unsigned integer Particle Channel 8 [high]
30024 unsigned integer Particle Channel 8 [low]
...
30074 unsigned int Valid particle channels
30076 unsigned int Alarm Flags - Particle Channels
Table B-8 Data Registers
Register Data Type Description