Hardware And Software Scanning - NI SCXI-1127 User Manual

V
2
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One-Wire
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Two-Wire
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Four-Wire
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Hardware and Software Scanning

© National Instruments Corporation
two-wire, one-wire, and four-wire channels connected to its front at the
same time, as shown in Figure 2-10.
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–
–
R
1
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Iex
Figure 2-10. Mixed Mode Scanning with an SCXI-1331
You can scan the channels in any sequence you want. You can connect more
than one SCXI-1127 module together using the HVAB-backplane adapter
from the SCXI-1357/1358 kits to expand the channel count of the system.
When combining different modes in one module it is important to use the
channels efficiently. Generally you should connect the four-wire channels
first, followed by the two-wire channels, and finally by the one-wire
channels.
The SCXI-1127 provides a very flexible scanning architecture. You can
scan the channels randomly and can have multiple input modes in the same
scan. This is useful for connecting multiple sensor types to one module.
2-11
Chapter 2 Using the SCXI-1127
SCXI-1127
SCXI-1127 User Manual