1592010870 XWEB3000-5000 EVO STP GB r1.6 12.10.2018.doc XWEB3000/5000 EVO 10/22
Incorrect connection
•Keep the serial cable away from power cables and from any possible source of electromagnetic
disturbance
•Do not connect the serial cable shielding to the earth connection of the electrical system
•Do not connect the "Gnd" terminal.
•Draw a map of the installation that you are setting up: it may be useful in case of future problems or
changes
The two XWEB-EVO 485 serial ports can be used simultaneously and do not conflict with each other. The
two lines can be used to create two distinct controller networks, for example a network for the ground floor
and another for the first floor.
Attention: polarity and termination parameters on XWEB must be set according to the geography of
your controller network; pay attention to the following notes:
Notes on the use of termination resistors (TERM)
It is necessary to insert a termination resistor between the most distant instruments on the RS-485
line (typically XWEB and in conjunction with the last slave). Some devices internally integrate
termination resistors, often activated with dip-switches; it is necessary to verify that only the first and last
device of the bus have the termination resistance activated. On terminating RS-485 buses it is possible not
to insert termination resistors.
Notes on the use of polarization resistors (POL-, POL +)
In order to avoid false signals on the bus, polarization resistors must be inserted. It is important to note that
they must be placed in one and only one place in the network, otherwise the communication will get worse;
the node in which they are inserted is irrelevant even if it could be convenient to do it on XWEB, verifying
that the other instruments of the serial network have not already integrated and permanent ones.
4.2 CONTROLLER CONFIGURATION
On the same line, normally every controller is programmed with its own unique serial address, through the
Adr parameter. Refer to the instrument's installation manual to learn about the access and editing
procedures. For a simple description of the categories they belong to, organise address programming
progressively. A number of special cases are listed in the pages below.
4.2.1 CONFIGURATION FOR XC400/600/800/900 AND XH200/300/400 SERIES
These instruments have two serial addresses and must be configured in the same way. Refer to the
instrument's installation manual to learn about the access and editing procedures.
4.2.2 CONFIGURATION FOR XJA/XJP/XJM MODELS
XJA/XJP/XJM series instruments are configurable with one or more modbus addresses. Refer to their
installation manual for the configuration procedures.
