dixell xweb 5000, Operation Manual

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XWEB5000 Operation Manual
10/115 1592010600
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2.1 HARDWARE
ATTENTION: to protect both yourself and the computer from electrical hazards the XWEB should remain
turned off until you are finished connecting all electrical devices to the unit.
To avoid accidental start of the unit, remember to plug in electrical cable only when you have finished
setting up all other connection.
2.1.1 CHECK THE RS485 BEFORE STARTING
To be connected to the serial line all the Dixell Modbus instruments must be provided with direct RS485
terminals or the “TTL”-RS485 interface (XJRS485 or XJ485). Check the controller‟s manual for more
information.
The RS485 line is mainly based on two polarised terminals. Please make sure that respect the right sequence
for all the devices connected to the serial line.
Follow these important advises:

The RS485 serial line must reach all the instruments where they are installed.

Beware to the wire polarities when screwing them into the instrument terminals.
2.1.2 EACH INSTRUMENT IS PROVIDED WITH THE ADDRESS PARAMETER ADR

The cable must have 2 or 3 wires with shield, minimum section 0,5mm
2
(eg. the BELDEN 8772).

From the XWEB position the cable reaches all the instrument positions.

Do not execute loops or derivations:
Right connection
Wrong connection