Datasheet > 778783-01

778783-01

更新时间： 2022-12-19 10:22:22

品牌	Logo	应用领域
美国国家仪器公司 - NI		控制器
页数	文件大小	规格书
6页	519K
描述
Controller Area Network (CAN) Interfaces

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778783-01 数据手册

Controller Area Network (CAN) Interfaces

NI-CAN Features in

Connector

Measurement & Automation Explorer

PCI-CAN and PXI-846x interfaces have a 9-pin male D-Sub (DB9)

Test Panel

connector for each port. The 9-pin D-Sub connector follows the pinout

You can communicate with a specific CAN channel without recommended by CiA DS 102. Figure 2 shows the 9-pin D-Sub

programming using Test Panel, a simple debugging tool to experiment connector pinout for high-speed and low-speed/fault-tolerant

with CAN channels. Using a graphical interface, the tool reads CAN interfaces. PCMCIA-CAN cables have both a 9-pin male D-Sub and

data in engineering units and plots or writes to the device.

Combicon-style pluggable screw terminal connector for each port.¹

¹As shown in Figure 3 on page 4.

Bus Monitor

Note: See the NI CAN hardware and software reference manual for pinouts for single-wire

and software-selectable interfaces.

To quickly monitor all CAN bus traffic, use the Bus Monitor, a utility

that provides an easy-to-use interface to view all CAN traffic and log

it to disk. It also provides options to control, display, and view

bus statistics.

CAN Device Simulator

The National Instruments CAN Device Simulator, when

communicating with NI CAN and data acquisition (DAQ) hardware

NI Spy

NI Spy gives you an easy way to monitor the NI-CAN API calls your on a PC, provides a tool to demonstrate the concepts of CAN

application makes without having to recompile or rebuild. Use it to communication, DAQ, and CAN/DAQ synchronization.

verify that your application is working properly, troubleshoot

The NI CAN Device Simulator has a function generator, one high-

problems with your application, or verify the communication with speed CAN interface, one high-speed CAN monitor connector, a

your CAN device. NI Spy dynamically captures and displays all 68-pin DAQ connector, access to the DAQ interface TRIG1, TRIG2,

NI-CAN API calls made by any applications running in the system.

and FREQOUT pins, and digital input switches.

Physical Layer

The CAN physical layer connects the CAN controller to the physical

bus wires. The boards contain the PCI and PXI physical layers. They are

powered internally (from the boards) via a DC-DC converter,

and optically isolated up to 500 V. This isolation protects your

NI-CAN hardware and the PC it is installed in from being damaged by

high-voltage spikes on the CAN bus.

For PCMCIA-CAN cards, the physical layer is implemented inside

the cable. The cables can be powered either internally (from the host

computer) via an onboard DC-DC converter, or externally (from the

CAN bus) via a voltage regulator. PCMCIA-CAN physical layer cables

are included with PCMCIA interfaces.

Figure 1. NI CAN Device Simulator

^{National Instruments • Tel: (800) 813 3693 • info@ni.com • ni.com}3

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