Moxa Technologies Industio CP-114 Series CP-114 Series Manual do Utilizador descarregar pdf (Página 17)

Universal PCI Board Hardware Installation

2-6

Onboard termination resistors can be activated individually for each serial port using jumpers JP1 through JP4.

For CP-114UL, JP1/2/3/4 corresponds to serial port 1/2/3/4, respectively. For CP-114UL-I, JP1/2/3/4

corresponds to serial port 4/3/2/1, respectively. 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. Switches 1 through 4 on each bank correspond to the 4 serial ports. S3 selects between RS-232 and

RS-422/485, S2 selects between RS-422 and RS-485, and S1 selects between 2-wire and 4-wire RS-485, as

follows:

Mode S1 S2 S3

RS-232 --- --- ON

RS-422 --- ON OFF

4-wire RS-485 ON OFF OFF

2-wire RS-485 OFF OFF OFF

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 130 131

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Moxa Technologies Industio CP-114 Series CP-114 Series Manual do Utilizador Página 17