1592028150 XWEB300D_500_500D stp GB r2.1 2012.06.22.doc
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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 instrument manuals for more i nformation. The RS485 line is
mainly based on two polarised terminals. Please pay respect to the right
sequence for all the devices connected to the serial line.
Follow these important instructions:
The RS485 serial line must reach all the instruments where they are installed.
Make sure of the wire polarities when screwing them into the instrument
terminals.
The cable must have 2 or 3 wires with shield, minimum section 0,5mm2 (eg. the
BELDEN 8772).
From the XWEB 500 position the cable reaches all the instrument positions.
Do not execute loops or derivations:
Right connection