Configuration and Installation
Chapter 2
AT-MIO-16D User Manual
2-4
© National Instruments Corporation
A. Switches Set to Base I/O Address of Hex 000
This side down for 1
This side down for 0
1
2
3
4
B. Switches Set to Base I/O Address of Hex 220 (Factory Setting
This side down for 1
This side down for 0
F
O
F
O
N
1
2
3
4
5
U61
F
O
F
O
N
1
2
3
4
5
U61
A9
A8
A7
A6
A5
A9
A8
A7
A6
A5
Figure 2-2. Example Base I/O Address Switch Settings
The five least significant bits (LSBs) of the address (A4 through A0) are decoded by the
AT-MIO-16D to select the appropriate AT-MIO-16D register. To change the base I/O address,
remove the plastic cover on U61; press each switch to the desired position; check each switch to
make sure the switch is pressed down all the way; and replace the plastic cover. Make a note of
the new AT-MIO-16D base I/O address for use when configuring the AT-MIO-16D software (a
form is provided for you in Appendix G, Customer Communication). Table 2-3 lists the possible
switch settings, the corresponding base I/O address, and the base I/O address space used for that
setting.
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