Lighthouse Worldwide Solutions ApexR02p, Руководство оператора

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ApexRp Operators Manual
248083480-1 Rev 3 40
6
Program with MODBUS
Protocol
ApexRp instruments can be programmed using MODBUS Protocol.
The full protocol, as used, is detailed in Appendix A: “ApexRp MODBUS
Register Map v1.50” on page A-1. This chapter contains the
information needed to program the basic configuration for the
instrument using the MODBUS protocol.
DIP Switches
During power-up and reset, ApexRp reads the DIP switches.
Protocol Settings
The MODBUS Protocol is defined through an RS-232 or RS-485
interface with:
• Baud Rate: 19200
• Data Bits: 8
• Stop Bits: None
• Parity: 1
• Flow Control: None
Power On/Auto Start
When powering up the instrument, it will begin sampling using the
default configuration:
• Sample Time = 60 seconds
• Hold Time = 0 seconds
• Alarm Channel = Disabled
To stop the sampling, send the command 12 to command register
40002.
Stopping the sampling will set the Device Status bit in Register 40003
to 0.
Note: When changing
the DIP switch settings,
the instrument must be
power-cycled.
Note: The automatic
starting of the sampling
accommodates systems
that do not send a START
command, but just polls
the instrument for its
data.