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one conversion in the future, at time t+1. The conversion code is listed in 
Table 29.

The conversion rate for every channel must match the value of the conversion speed 

control in 0x2002.

For example, the scan list entry 0x00000001FC indicates this scan stores at 
address 1, and the next conversion is channel 2 at high-accuracy.

Table 30 contains the default scan list.

The NI 9217 has four RTD channels that can measure 100 

Ω RTD in 3-wire 

and 4-wire mode. There is a 1 mA excitation current source per channel and 
the module range is –500 

Ω to 500 Ω. The resistance range specified in the 

manual is 0 to 400 

Ω. This range is tested and covers the temperature range 

of –200 ºC to 850 ºC for the standard platinum RTD. The channel does not 
read negative resistance.

Each channel has an associated LSB weight, which is the number of 
Ω per bit, and an offset, which is the number of Ω per bit measured when 
the inputs are grounded.

Table 29.  NI 9217 Conversion Code

7:3

Conversion rate: 0b11111 = 31, 
High-Accuracy
0b00010 = 2, High-Speed

2:1

Channel number

0

Reserved

Table 30.  NI 9217 Scan List Format

0x2001

0

ARR:U32

5

1

4

2

0x0000 | 0xF8 | 0x02

3

0x0100 | 0xF8 | 0x04

4

0x0200 | 0xF8 | 0x06

5

0x0300 | 0xF8 | 0x00