National Instruments Deterministic Ethernet Expansion Chassis NI 9144 Manual de usuario descargar pdf (Pagina 26)

NI 9144 User Guide and Specifications 26 ni.com

Table 11 contains the default scan list.

NI 9203 Calibration Data

The NI 9203 has eight channels each with two modes. Each channel can

have a nominal unipolar input range of 0–20 mA or bipolar ±20 mA. Each

channel has an associated LSB weight, which is the number of amps per bit,

and an offset, which is the number of amps per bit measured when the

inputs are open.

Note LSB weight is referred to as Gain in the object dictionary.

The difference in offset from channel to channel is negligible.

The calibration data gives one offset and eight gains for each mode, a total

of 2 offsets and 16 gains in total. All channels in a given mode use the same

offset. The host can then take these constants and adjust the raw data into

calibrated data.

Table 11. NI 9203 Scan List Format

Index Sub Type Value

0x2001 0 ARR:U32 9

1 8

2 0x00000002

3 0x00010006

4 0x00020001

5 0x00030005

6 0x00040003

7 0x00050007

8 0x00060000

9 0x00070004

1 2 ... 21 22 23 24 25 26 27 28 29 30 31 ... 64 65

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National Instruments Deterministic Ethernet Expansion Chassis NI 9144 Manual de usuario Pagina 26