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248083447-1 Rev 1 A-1
A ApexRemote
MODBUS Register
Map v1.50
COMM
Settings
Lighthouse particle counters with MODBUS use the following
communications settings:
Note:
ApexRemote
currently supports only
upper case.
The MODBUS slave address is set on the particle counter.
Supported
MODBUS
Commands
Visit www.modbus.org for documentation on how to use these
commands.
Table A-1 MODBUS Communications Settings
Baud Rate 19200
Data Bits 8
Stop Bits 1
Parity None
Hardware Protocol RS-232-C or RS-485 standard
Software Protocol MODBUS ASCII (supports upper/lower case)
and MODBUS RTU
Table A-2 MODBUS Registers
Hex Command Description
03 Read Holding Registers
04 Read Input Registers
06 Write Single Holding Register
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