Advantech PCI-1610 Manual do Utilizador descarregar pdf (Página 44)

PCI-COMMUNICATION User Manual 34

Terminator resistor setup (for PCI-1601/1602/1611/1612/1622)

You can install terminator resistors if necessary to match impedance.

Each signal line (Tx, Rx) has a separate resistor.

Especially in fields with serious electric noise, installing terminal resis-

tors is helpful to stabilize communications. Make sure that both sides of

the RS-485 communication ports are installed on BUS. See details in

Chapter 5.2.2 and 5.2.3

Figure 2.27: Resistor Selection

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