PiXtend eIO Hardware Manual
Overview of possible serial device addresses:
Device address
1
2
3
4
5
6
7
8
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
2
0
1
0
0
0
0
0
0
3
1
1
0
0
0
0
0
0
4
0
0
1
0
0
0
0
0
5
1
0
1
0
0
0
0
0
6
0
1
1
0
0
0
0
0
7
1
1
1
0
0
0
0
0
8
0
0
0
1
0
0
0
0
9
1
0
0
1
0
0
0
0
10
0
1
0
1
0
0
0
0
11
1
1
0
1
0
0
0
0
12
0
0
1
1
0
0
0
0
13
1
0
1
1
0
0
0
0
14
0
1
1
1
0
0
0
0
15
1
1
1
1
0
0
0
0
16
0
0
0
0
1
0
0
0
17
1
0
0
0
1
0
0
0
18
0
1
0
0
1
0
0
0
19
1
1
0
0
1
0
0
0
20
0
0
1
0
1
0
0
0
21
1
0
1
0
1
0
0
0
22
0
1
1
0
1
0
0
0
23
1
1
1
0
1
0
0
0
24
0
0
0
1
1
0
0
0
25
1
0
0
1
1
0
0
0
26
0
1
0
1
1
0
0
0
27
1
1
0
1
1
0
0
0
28
0
0
1
1
1
0
0
0
29
1
0
1
1
1
0
0
0
30
0
1
1
1
1
0
0
0
31
1
1
1
1
1
0
0
0
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