Lighthouse RLPC 0.1m, Operating Manual

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Lighthouse REMOTE Liquid Particle Counter (MODBUS Output) Operating Manual
6-18 248083227-1 Rev 8
controlled by the instrument ( d or ud command),
the characters represent the Sample Interval.
Tags: Tags contain three characters that identify the type
of data that follows the Tag. If the data is a particle
count, the Tag indicates particle size. If the data is
a location number, the Tag is LOC.
Ch 1, Ch 2: These characters contain the channel size and count
data from the measurements. The channel size and
count are each preceded by a space.
Size: These three characters list the particle size range.
Count: Count is six characters and indicates the number of
particles counted during Interval
at the size range.
Location: Where multiple instruments are connected to an
RS485 bus, each unit must have a unique
identifying number, called a Location. The
Location field contains a number in the range of 0
through 63.
Checksum: The Checksum is a six-character hexadecimal
number. The first two characters are always zero.
The value of the Checksum is the sum of all the
ASCII codes in the record from the status character
up to but not including the space just before the "C/
S".
End of Message The End of Message characters follow the
Checksum with no separating space. The End of
message characters are a carriage return and line
feed [CRLF] {ASCII 13 decimal and 10 decimal}.