Moxa Technologies Industio CP-114 Series CP-114 Series Manual do Utilizador descarregar pdf (Página 21)

Universal PCI Board Hardware Installation

2-10

CP-112UL/CP-112UL-I

Onboard termination resistors can be activated individually for each serial port using jumpers JP1 and JP2. JP1

corresponds to serial port 1. Short the jumper pins to activate the termination resistor; leave the jumper pins

open to bypass the termination resistor. The onboard DIP switches, S1, S2, and S3, are used to select RS-232,

RS-422, or RS-485 mode for each serial port. Switch 1 corresponds to port 1 and switch 2 corresponds to port

2. S1 selects between RS-232, S2 selects between RS-422, and S3 selects between 2-wire and 4-wire RS-485,

as follows:

Mode S1 S2 S3

RS-232 ON -- --

RS-422 OFF ON --

4-Wire RS-485

OFF

2-Wire RS-485 OFF OFF OFF

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 130 131

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