Sharp DP-750 Servisní příručka Strana 44

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44 Fieldbus ECO-Coupler 750-343
Hardware
WAGO-I/O-SYSTEM 750
PROFIBUS
3.1.2.3 Fieldbus Connection
The PROFIBUS interface is designed as a D-Sub connection in accordance
with the US Standard EIA RS 485 for cable linked data transmission.
Fig. 3-3: Bus connection, D-Sub female connector g012102x
Pin Signal Description
3 RxD(TxD)-P Transmit (receive) signal
4 RTS Ready To Send
5 GND Supply ground (earth)
6 Vcc Voltage supply
8 RxD(TxD) N Transmit (receive) signal
The electrical isolation between the fieldbus system and the electronics is
achieved by means of DC/DC converters and optocouplers located in the
fieldbus interface.
The fieldbus connection point is designed to permit the node to fit into an 80
mm high switch box once connected.
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