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The order in which you send the commands is important.

Configuration 1: All Channels (ai0:ai3) for Voltage AI, ±15 Volt Range, 
High Speed Mode (100 Hz Max Sample Rate):

(0x0F)

Quarter-Bridge

350 

Ω

(0x10)

120 

Ω

(0x11)

Half-Bridge

1 V/V

(0x13)

Full-Bridge

CJC

62.5 mV/V

(0x14)

7.8 mV/V

(0x17)

CJC range

Table 41.  NI 9219 Configuration 1: Command Bytes

0x01

ADC Mode Configuration Byte – Channel 0

0x01

Data Byte

0x46

CRC value

0x1F

Mode/Range Configuration – Channel 0

0x01

Data Byte

0xC6

CRC value

0x04

Calibration Offset MSB – Channel 0

0x7F

Data Byte

0x54

CRC value

0x05

Calibration Offset Byte 2 – Channel 0

0xFF

Data Byte

0xB6

CRC value

0x06

Calibration Offset LSB – Channel 0

0x85

Data Byte

Table 40.  NI 9219 Mode and Range Type (Continued)