Programming the slot 0 hardscan circuitry, Programming the slot 0 hardscan circuitry -13 – National Instruments SCXI-1121 User Manual
Page 104
Chapter 5
Programming
© National Instruments Corporation
5-13
channel. See the
subsection of the
Acquisition Board Setup Programming
section earlier in this chapter. You
can use the MIO-16 boards in conjunction with the SCXI-1350
multichassis adapter for multichassis scanning.
For each chassis, program the modules according to the appropriate mode
of operation, disregarding the fact that other chassis will be involved.
For example, you want to scan thirteen modules. Twelve modules are in one
chassis. The thirteenth is in the second chassis and is to be scanned through
a fourteenth module that is cabled to the data acquisition board but is not
involved in the scan. Program the twelve modules in the first chassis
according to the steps in the previous
section, and program the thirteenth and fourteenth modules
Channel Scanning from the SCXI-1121 via Another Module
earlier in this chapter.
3. Programming the Slot 0 Hardscan Circuitry
The following section describes how to program the Slot 0 circuitry for
scanning operations. For a more detailed description of the Slot 0 scanning
circuitry, consult the SCXI-1000/1001 User Manual. Descriptions of the
Slot 0 registers are given in the section
Chapter 4,
. Skip this section if you are doing
single-module parallel scanning.
To program the hardscan circuitry, perform the following steps:
1.
Write binary
0000 0000
to the HSCR.
2.
Write binary
0000 1000
to the HSCR.
3.
Write the Slot 0 scan list to the FIFO.
4.
Write binary
0010 1100
to the HSCR.
5.
Write binary
101S 1100
to the HSCR.
6.
Write binary
101S 1110
to the HSCR.
7.
Write binary
101S 1111
to the HSCR.
To program the hardscan circuitry to use the current scan list, perform the
following steps:
1.
Write binary
0000 1000
to the HSCR.
2.
Write binary
0100 1000
to the HSCR.
3.
Write binary
0000 1000
to the HSCR.
4.
Write binary
0010 1100
to the HSCR.