Lighthouse RLPC 0.1m, Operating Manual, Page: 101 / 118

RLPC MODBUS Register Map v1.44
248083227-1 Rev 8 B-9
30008 (bits 1 and 2 are set TRUE).
Bits 7 to 31 are currently unused.
Valid Data in Channels (30074)
Register 30074 represents the flag bits corresponding to valid data
present in the particle register range.
Alarm Flags in Channels (30076)
Register 30076 represents the flag bits corresponding to particle
channels that have exceeded the threshold [Threshold High Registers
(45xxx series)] based on alarm mode
Data Type Registers
Note:
All data records
have the same data types
assigned to them. The
user does not have to read
the data type registers for
every record.
The 41xxx register series is used to identify the type of data items in the
30xxx series. The Data Type registers run in parallel with the Data
Registers. For example, Data Register 30041’s Data Type register is
41041.
Data Types are assigned 4 ASCII characters across 2 registers. If a
Data Type string contains less than 4 characters, then the rest of the
Table B-7 Data Status Byte
Bit Description
0 Laser Alert Status
0 = Laser is OK 1 = Laser Alert
1 Flow Alert Status
0 = Flow Rate is OK 1 = Flow Rate Alert
2 Particle Overflow Status
0 = No overflow 1 = Overflow occurred
3 Instrument Service Status
0 = Working correctly 1 = Instrument malfunction detected.
4 Threshold High Status
0 = Threshold not exceeded 1 = Threshold exceeded
5 Threshold Low Status
0 = Threshold not exceeded 1 = Threshold exceeded
6 Instrument Sampler Status
0 = Nominal Operation 1 = Sampler Error