(and IN and OUT modules) in a "cascading" manner. Avoid tree or star connections since
they reduce interference immunity.
-) The power supply to the detectors (and IN and OUT modules on the bus) must be
connected with a 2-core wire with adequate section based on the number of connected
devices, their distance from the power supply and each device’s consumption (please see
the technical manual enclosed with gas detectors for this purpose).
Note: each detector connected on the RS485 line must have its own univocal address
between 1 and 255 (247 for the ModBus protocol). Please see the gas detector technical
manual for address settings.
The diagram below shows the connection of IN and OUT detectors and remote modules
on the RS485 bus of the central unit
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