National Instruments cDAQ-9133, Руководство пользователя

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NI cDAQ-9132/9133/9134/9135/9136/9137 User Manual
C Series Module
National Instruments C Series modules provide built-in signal conditioning and screw terminal,
spring terminal, BNC, D-SUB, or RJ-50 connectors. A wide variety of I/O types are available,
allowing you to customize the cDAQ controller to meet your application needs.
C Series modules are hot-swappable and automatically detected by the cDAQ controller.
I/O channels are accessible using the NI-DAQmx driver software.
Because the modules contain built-in signal conditioning for extended voltage ranges or
industrial signal types, you can usually make your wiring connections directly from the C Series
modules to your sensors/actuators. C Series modules can sometimes provide isolation from
channel-to-earth ground and channel-to-channel.
For more information about which C Series modules are compatible with the cDAQ controller,
refer to the
C Series Support in NI-DAQmx document by going to
ni.com/info
and entering
the Info Code
rdcdaq
.
Parallel versus Serial DIO Modules
Digital module capabilities are determined by the type of digital signals that the module is
capable of measuring or generating.
•
Serial digital modules are designed for signals that change slowly and are accessed by
either software-timed or hardware-timed reads and writes.
• Parallel digital modules are for signals that change rapidly and are updated by either
software-timed or hardware-timed reads and writes.
For more information about digital modules, refer to Chapter 4, Digital Input/Output and PFI .
cDAQ Module Interface
The cDAQ module interface manages data transfers between the STC3 and the C Series
I/O modules. The interface also handles autodetection, signal routing, and synchronization.
STC3
The STC3 features independent high-speed data streams; flexible AI, AO, and DIO sample
timing; triggering; PFI signals for multi-device synchronization; flexible counter/timers with
hardware gating; digital waveform acquisition and generation; and static DIO.
•
AI, AO, and DIO Sample Timing —The STC3 contains advanced AI, AO, and DIO
timing engines. A wide range of timing and synchronization signals are available through
the PFI lines. Refer to the following sections for more information about the configuration
of these signals:
–
The Analog Input Timing Signals section of Chapter 2, Analog Input
– The Analog Output Timing Signals section of Chapter 3, Analog Output
– The Digital Input Timing Signals section of Chapter 4, Digital Input/Output and PFI