National Instruments SCXI 1346, Руководство по установке, Страница: 16 / 19

SCXI-1346 Shielded Multichassis Cable Adapter 16 ni.com
Figure 15. Multi-Chassis System with a PXI-1011 and Two External SCXI Chassis
Addressing specific channels in a system with both SCXI chassis, and
PXI-1010 or PXI-1011 combination chassis is slightly different than
systems with only SCXI chassis and is covered in the
SCXI Chassis with
PXI-1010 or PXI-1011 Chassis Systems section.
Reading Channels from Multi-Chassis Systems
The following sections explain how to read channels from multi-chassis
systems that use SCXI chassis exclusively and systems that use external
SCXI chassis in conjunction with PXI-1010 or PXI-1011 combination
chassis.
SCXI Chassis Systems
For LabVIEW, Measure, Visual Basic, and the MAX Test Panel, the
channel string determines the sequence in which SCXI channels are
scanned. In LabVIEW, an array of these channel strings configures
multiple modules in the scan list. When the application program runs,
the channel string is used for programming the channel information
into the SCXI system. The format of the channel string is
ob x ! sc y ! md z ! channels
.
1 SCXI Module
2 Shielded Cable Connected to SCXI-1346 Cable
Adapter
3 SCXI-1000 or SCXI-1001 Chassis
4 Shielded Cable Connected to SCXI-1349 Cable
Adapter
5 PXI-1010 Combination Chassis
6 68-Pin PXI DAQ Device
3
4
2
5
6
1