Lighthouse RLPC 0.1m, Operating Manual

Page: 103 / 118

RLPC MODBUS Register Map v1.44
248083227-1 Rev 8 B-11
Data Units Registers
The 42xxx register series identifies the units used by data items in the
30xxx series. These registers run in parallel with the Data Registers.
For example, Data Register 30010’s Units Register is 42010.
Note:
Not all data types
have units.
LWS Particle Counters
may use units not on the
table.
Units are stored as 4 character ASCII strings across 2 registers. If the
Units string contains less than 4 characters or no characters at all, the
rest of the string is padded with NULLs.
The table below shows units that may be sent by the device. Some of
these units are not currently used but are reserved for future use.
Table B-10 Data Units
Units Description Units Description
# Count (For Particles) ft/m Feet per minute
% Percent m/s Meters per second
s Seconds "H2O Inches of water
min Minutes "Hg Inches of mercury
hour Hours mmWa Millimeters of water
F Fahrenheit mmHg Millimeters of mercury
C Celsius cmHg Centimeters of mercury
K Kelvin Pa Pascals
ft Feet kPa Kilopascals
m Meters Bar Bar
ft^2 Square feet mBar Milli-bar
m^2 Square meters V Volts
ft^3 Cubic feet mV Milli-volts
m^3 Cubic meters A Amperes
L Liters mA Milli-amps
CFM Cubic feet per minute Ohm Ohms
CMM Cubic meters per minute mOhm Milli-ohm
L/m Liters per minute p/f3 Particles per cubic foot
p/m3 Particles per cubic meter LPM Liters per minute