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GFK-2059 Chapter 2 Configuration and Installation 2-5
2
Board Address Selection Switches
There are two address select DIP switches on-board the Digital-to-Analog Converter Board. Each
individual switch corresponds to an address bit, or is not used. If the switch is ON the
corresponding address bit is compared to a logic "zero". All corresponding address bits must
compare with the switch positions during a Write/Read of the DAC board. Each switch corresponds
to the address bits as shown in Figure 2-1 below. For the board switch locations are shown in
Figure 2-2 on page 2-6.
Example: For the Digital-to-Analog Converter Board to respond to a base address of
(FXFFBC40
16
) the S1 and S2 switches would be set accordingly.
Figure 2-1. Address Selection Switches
S2
OFF, OPEN = 1
ON, CLOSED = 087654321
A08 A09 A10 A11 A12 A13 A14 A15
4321
A05 A06 A07
NOT
USED
OFF
ON
S1
0011
C
B
16
16
READ THIS DIRECTION
2
2
READ THIS DIRECTION
1101
0010
2
0000
2
04
16
16
X
*
*No switches on-board to represent bits A00 through A04. These bits are understood to
be "zeros".