Quantum 890 USE 155 Manuale Utente Pagina 26

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Installing the Bridge Hardware
26
2.6 Connecting the Serial Cable (Wiring Terminals)
Figure 10 shows the connection for serial cables at the Bridge’s wiring terminals.
Figure 10 Connecting the Serial Cable (Wiring Terminals)
RS–232
RS–485
RxD CTS RTS TxD
Signal
Ground
Signal
Ground
Signal
Ground
RS–485 / RS–422
2–Wire
4–Wire
RxD– RxD+ TxD+TxD–Data–Data+
R
Terminating
Resistor
120 Ω
1/8 W
RRR
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