ACS-CONTROL-SYSTEM GmbH
l Lauterbachstr. 57 l D-84307 Eggenfelden l www.acs-controlsystem.de l [email protected]
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8. Interfaces RS232 and RS485
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The interface
RS485
is connected via a screened data line with twisted wires (Twisted
-
Pair). On each end
of the bus segment a termination of the bus lines needs to be connected. This is neccessary to ensure a
secure data transfer to the bus. For this a resistance (120 Ohm) is interposed between the lines Data B (+)
and Data A (–).
8. Interfaces RS232 and RS485
