National Instruments Deterministic Ethernet Expansion Chassis NI..., Руководство пользователя

Страница: 28 / 65

NI 9144 User Guide and Specifications 28 ni.com
NI 9205/9206
NI 9205/9206 Scan List
The scan list channel codes consist of eight bit fields in a 32-bit entry.
Bits 23..16 describe the data offset to store a conversion at time t , and
bits 15..0 describe a complex conversion control code that takes effect
two conversions in the future, at time t+2 . On the NI 9205/9206, this
conversion code is listed in Table 16.
Table 14. NI 9205/9206 Vendor Configuration Extensions
Index Sub Type R/W Description
0x2001 0 ARR:U32 Scan List = 33
1 R Channels to Convert = 1..32, default = 32
2..33 R/W Channel Code
0x2100 0 ARR:U32 — Calibration = 24
1 R Coeff 3
2 R Coeff 2
3 R Coeff 1
4 R Coeff 0
5 R 10 V offset
6 R 10 V gain
7 R 5 V offset
... — —
13 R User calibration, Coeff 3
... — —
Table 15. Scan List Format
Bits Field
31:24 = 0
23:16 Data Offset[ t ]
15:0 Conversion Code[ t +2}