Advantech PCL-746+ User Manual page 13

A four port serial communication interface card

This section tells how to set the jumpers to configure your card. It

gives the card default configuration and your options for each jumper.

You configure your card to match the needs of your application by

setting jumpers. A jumper is the simplest kind of electric switch. It

consists of two metal pins and a small metal clip (often protected by a

plastic cover) that slides over the pins to connect them. To "close" a

jumper you connect the pins with the clip. To "open" a jumper you

remove the clip. Sometimes a jumper will have three pins, labeled 1, 2

and 3. In this case you would connect either pins 1 and 2 or 2 and 3.

You may find pair of needle-nose pliers useful for setting the jumpers.

If you have any doubts about the best hardware configuration for

your application, contact your local distributor or sales representative

before you make any changes.

Each port of the PCL-746+ card has two associated status jumper

groups which require configuring prior to use. One group is to select

either RS-232 or RS-422/RS-485 communication protocols. The other

group selects RS-422 or RS-485. You will then need to select the cards

appropriate I/O address and IRQ.

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PCL-746+ User's Manual

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