Emerson X-web500 Guide d'installation télécharger pdf (Page 7)

1592028150 XWEB300D_500_500D stp GB r2.1 2012.06.22.doc

EB50

Wrong connection

Always keep the serial cable away from power cables.

Always keep the serial cable away from Electro-magnetic or frequency sources.

Do not connect shield to ground.

Do not connect the “Gnd (ground)” terminal.

Remember to draw a map of the line. This will help you to find errors if

something is wrong.

The instrument with RS485 have “+” and “-“ terminals, respect the polarity.

To keep the line balanced it is necessary a 100 Ohm resistor at the end of the

line (you can use the RS 485+ and RS 485- terminals of the last instrument

connected).

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Emerson X-web500 Guide d'installation Page 7