User Manual
12.
Controlling the unit remotely by ModBus protocol
On the control device installed on the unit, an input is available for serial connection on RS485 port with
ModBus protocol, to use this type of connection it is necessary a TTL/RS485 adaptor.
Observe the wiring diagram below, observing a bus type connection, and avoiding to create stars.
You can use the master and slave RS485 port, depending on the location of the instrument in the network.
To connect to the devices to be controlled simply use two minimum cross-section of 0.5 mm2 plus screen,
use the input GND only for communication problems.
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