2/9/2012 11:11 AM
8
Double Derby X User Manual Rev. 3
Setting the Starting Address
Set the start address using the group of DIP switches located usually on bottom of the product. Each dip switch
has an associated value. Adding the value of each switch in the ON position will provide the start address.
Figuring out which switches to toggle ON given a specific start address can be accomplished by determining
which switch values will add up to the address value, and turning these switches on. Do so by doing the
following:
1)
Determine the largest value switch that is less than the start address. Turn this switch on.
2)
Subtract the value of the switch you just turned on from the starting address number.
3)
Determine the largest value switch that is less than the remainder from the previous subtraction. Turn this
switch on.
4)
Subtract the value of the switch you just turned on from the remainder of the previous subtraction.
5)
Repeat steps three and four until you have a remainder of zero.
E
XAMPLE
S
TARTING
A
DDRESS
Address 10
Switch # 4
= 8
Switch # 2
= 2
Total
= 10
Address 24
Switch # 5 = 16
Switch # 4 = 8
Total
= 24
Resolving address
using simple math.
Address 233
233 – (128) = 105, Turn ON Dip # 8
105 – (64) = 41, Turn ON Dip # 7
41 – (32) = 9, Turn ON Dip # 6
9 – (8) = 1, Turn ON Dip # 4
1 – (1) = 0, Turn ON Dip # 1
D
IPSWITCH
(DMX
V
ALUE
)
1
2
3
4
5
6
7
8
9
1
2
4
8
16
32
64
128
256
1
3
4
5
6
7
8
9
ON
OFF
1
2
4
8
16
32
64
128
256
1
3
4
5
6
7
8
9
ON
OFF
1
2
4
8
16
32
64
128
256
1
3
4
5
6
7
8
9
ON
OFF
1
2
4
8
16
32
64
128
256
1
3
4
5
6
7
8
9
ON
OFF
1
2
4
8
16
32
64
128
256
1
3
4
5
6
7
8
9
ON
OFF
1
2
4
8
16
32
64
128
256
1
2
2
2
2
2
2
3
4
5
6
7
8
9
ON
OFF
1
2
4
8
16
32
64
128
256
1
2
3
4
5
6
7
8
9
ON
OFF
1
2
4
8
16
32
64
128
256
1
2
3
4
5
6
7
8
9
ON
OFF
1
2
4
8
16
32
64
128
256
1
2
3
4
5
6
7
8
9
ON
OFF
1
2
4
8
16
32
64
128
256
1
2
3
4
5
6
7
8
9
ON
OFF
1
2
4
8
16
32
64
128
256
1
2
3
4
5
6
7
8
9
ON
OFF
1
2
4
8
16
32
64
128
256
1
2
3
4
5
6
7
8
9
ON
OFF
1
2
4
8
16
32
64
128
256