National Instruments PC-DIO-96 Instrukcja Użytkownika Pobierz pdf (Strona 20)

Configuration and Installation Chapter 2

PC-DIO-96 User Manual 2-2 © National Instruments Corporation

U26

Figure 2-1. PC-DIO-96 Parts Locator Diagram

Base I/O Address Settings

The base I/O address for the PC-DIO-96 is determined by the switches at position U26 (see

Figure 2-1). The switches are set at the factory for the I/O address hex 180. With this default

setting, the PC-DIO-96 uses the I/O address space hex 180 through 19F.

Note: Verify that this space is not already used by other equipment installed in your

computer. If any equipment in your computer uses this I/O address space, you must

change the base I/O address for the PC-DIO-96 or for the other device.

Each switch in U26 corresponds to one of the address lines A9 through A5. Thus, the range for

possible base I/O address settings is hex 000 through 3E0. Base I/O address values hex 000

through 0FF are reserved for system use. Base I/O values hex 100 through 3FF are available on

the I/O channel. A4, A3, A2, A1, and A0 are used by the PC-DIO-96 to decode accesses to the

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 104 105

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National Instruments PC-DIO-96 Instrukcja Użytkownika Strona 20