
Chapter 14 SCXI Hardware
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National Instruments Corporation 14-23 DAQ Hardware Overview Guide
When you cable a DIO-96 to an SCXI-1162, SCXI-1162HV, SCXI-1163,
or SCXI-1163R in parallel mode, the lines in DIO-96 ports 0 to 3 are
directly connected to the channels on the module. If you configure the
module for parallel (secondary) mode and cable the second half of the
ribbon cable to the module, DIO-96 ports 6 to 9 are directly connected to
the digital channels on the module.
You can use the
DIG_In_Prt and DIG_Out_Prt functions to access the
SCXI-1162, SCXI-1162HV, SCXI-1163, and SCXI-1163R digital
channels in parallel mode by using the correct onboard port numbers, listed
above.
You cannot cable a DIO-24 or DIO-96 to an analog input module.
DIO-32F and 6533 Device
The DIO-32F and the 6533 device digital I/O devices support the digital
modules and analog output modules. It is important to remember that when
a digital I/O device is cabled to an SCXI module, some of the digital device
I/O pins, and therefore some of the device resources, are reserved for SCXI
use. SCXI reserves the following DIO-32F and 6533 device resources
when cabled to a digital or analog output module in multiplexed mode:
• DIO-32F digital I/O lines DIOB0 to DIOB3 are the output
communication lines to the SCXI module. The entire port is reserved
by NI-DAQ.
• DIO-32F digital I/O line DIOA0 is the input communication line from
the SCXI module. The remaining lines of this port are available only
for input.
• 6533 digital I/O lines DIOB0 to DIOB3 are output communication
lines to the SCXI module. The remaining lines of this port are available
for either input or output.
• 6533 digital I/O line DIOA0 is the input communication line from the
SCXI module. The remaining lines of this port are available for either
input or output.
Use an SCXI-1348 cable assembly to cable a DIO-32F or an SCXI-1355
cable assembly to cable a 6533 device to an SCXI-1162, SCXI-1162HV,
SCXI-1163, or SCXI-1163R in parallel mode. The 32 digital lines on the
DIO-32F or 6533 device are directly connected to the 32 channels on the
module. You can use the
DIG_In_Port and DIG_Out_Port functions to
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