485 Bus Wiring - Pyronix EURO 46 V10 Installation Manual

485 Bus Wiring

All 485 bus peripherals; LCD
keypads, readers, expanders etc.
are connected via the D1-, D2+,
D3 and D4 terminals. This is an
example of what a typical 485 bus
may look like.
General Principles:
NOTE 1: No alarm system cable
should be run with other cables
carrying AC or digital signals.
NOTE 2: The cables should be
protected by the use of grommets
where appropriate.
NOTE 3: For greater than 1000m
range a standard isolated RS485
repeaters required.
NOTE 4: There must be a ferrite
bead fitted to one of the outgoing
data lines and secured inside
the EURO 46 V10 case itself. The
Ferrite bead is supplied packaged
with a cable-tie which must be
used to secure it in the case and
prevent it shorting any electrical
contacts (Ferrite as shown).
There must also be a ferrite bead
fitted to the data wires of a EURO-PROXE (if connected). The Ferrite bead is supplied with the reader.
NOTE 5: If an expansion module with a power supply on board is connected,
the D2+ terminal must not be connected between the main bus and module.
EURO 46 V10 Installation Manual
EURO 46
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