Expansion Port
The AL250-V2 is equipped with one RS-485 expansion port which allows it to be
networked into a larger water treatment monitoring system via Modbus RTU. The
RS-485 expansion port is the 6 pin, watertight connector located in the upper right
hand corner of the left hand side of the AL250-V2 enclosure.
Serial Port
The AL250-V2 is equipped with one RS-232 serial port which allows it to be equipped
with an optional internal modem module for remote monitoring and downloading of
data (program updates, default set points, etc.). The RS-232 serial port is also
connected to the 5 pin, watertight connector located directly below the RS-485
expansion port on the left hand side of the AL250-V2 enclosure. Connecting to the
serial port on the side of the enclosure will automatically disconnect the internal
modem.
Data Logging
The AL250-V2 is designed to log data from the RO system. This data may be
retrieved locally through the serial port connection or remotely if the AL250-V2 unit is
equipped with the optional modem. Retrieval of logged data requires the use of
AquaGraph
TM
PC software and serial cable.
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