LEGRAND EMS CX3, Техническое руководство, Страница: 67 / 98

65
TECHNICAL GUIDE
CX³ EMS E
nErgy
M
anagEMEnt
S
yStEM
WWW.LEGRAND.COM
PRODUCT SELECTION
The CX³ EMS/RS485 interface can be
used with any RS485 product which
needs a MODBUS connection.
WIRING
■ 12 VDC power supply created by the
CX³ EMS bus via communication rail or
cable. (1)
■ Connection to the EMS CX³ bus via
communication rail or cable (1)
■ Connection to the RS485 bus via 2 RJ45
connectors for easier connection. (2) If
the interface is at the end of the RS485
bus, consider swapping the 120 ohm
line termination resistor on the side of
the RJ45 connections. (3)
■ The USB port on the front (4) is used to
connect a PC in order to configure the
CX³ EMS modules.
(3)
(2)
(4)
(1)
WIRING (CONTINUED)
■ CX³ EMS bus:
There are 2 possible solutions for connection to the bus:
At the back of the
modules via
communication rail
Cat.Nos 4 149 01/02/03
The CX³ EMS bus connection specifications are common to all CX³ EMS
products and are detailed in the product data sheets.
Use of the configuration software is described in the “CX³ EMS configuration
software” section (see page 76).
At the bottom of the
modules via
communication cables
Cat.Nos 4 149 07/08/09