Справочник Пользователя для National Instruments NI 9144

The scan list channel codes consist of two bit fields in a 32-bit entry.

Bits 23..16 describe the data offset to store a conversion at time t, and 
bits 7..0 describe the conversion control code that takes effect 
two conversions in the future, at time t+2. On the NI 9201/9221, this 
conversion code is a bit flag where bit 0 represents a conversion on channel 
0, through bit 7 for channel 7.

So, for example, the scan list entry 0x00010008 indicates this scan stores 
at address 1, and the conversion two in the future is channel 3 (bit 3 set = 8).

Table 6 contains the default scan list.

Table 5.  NI 9201/9221 Scan List Format

31:24

= 0 

23:16

Data Offset[t]

15:8

= 0

7:0

Convert Flag[t+2]

Table 6.  NI 9201/9221 Default Scan List

0x2001

0

ARR:U32

9

1

8

2

0x00000004

3

0x00010008

4

0x00020010

5

0x00030020

6

0x00040040

7

0x00050080

8

0x00060001

9

0x00070002