Specifications

1.4 Communications
The M550 provides RS485 output of all measured
parameters.
The serial port option enables remote reading and
programming of the M550 via a host computer, laptop etc.
The RS485 use the Modbus protocol allowing multi-drop
with up to 32 M550s connected in parallel. The RS485
Modbus protocol allows the M550 to be used with PC,
PLC, RTU, Data loggers and Scada programs.
Software is available for programming and displaying
parameters. Contact your local distributor for a free copy
or visit our website www.multitek-ltd.com
1.5 LED indicator
The red LED on the front of the M550 serves three
purposes:
LED continually illuminated means that the power supply
is o.k.
LED illuminated and flashing every 10 seconds means that
the power supply o.k. and the M550 is communicating
correctly.
LED illuminated and flashing every second and 2 flashes
every 10 seconds means that the power supply o.k. the, and
that the unit is communicating correctly, but there is no
input measuring voltage signal.
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M550MAN.PM5 01/08/101, 12:485