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RS-232，RS-422和 RS-485 串口通讯接口的快速比较 NI Home 4 ratings: 3 out of 5 Rate this Document RS-232，RS-422和 RS-485 串口通讯接口的快速比较 硬件: Serial>>RS-485>>PCI-485/2 问题: RS-232，RS-422以及RS-485串口的基本区别是什么？ 解答: 下面的表格比较了：工作方式，驱动器和接收器的总数，电缆的最大长度及最大传输速率。RS-232 是大多数计算机通用的接口，比如COM1 和 COM2。注意，大多数计算机的接口COM1以及COM2并不是RS-422/RS-485。然而，RS-422 URL: http://digital.ni.com/public.nsf/allkb/C26D1B994F540A938625713B0022D9DC

Setting the Transceiver Wire Mode on Ports for National Instruments Serial Boards How can I set the transceiver wire mode for ports on my National Instruments serial boards? URL: http://digital.ni.com/public.nsf/allkb/1D516C10D7EDFAC6862571110073B8F4

对National Instruments的串口卡进行端口的收发线模式设置 如何对National Instruments的串口卡进行端口的收发线模式设置? URL: http://digital.ni.com/public.nsf/allkb/3E821A4AC1954A75862573C7004FDA8C

Is RS-422 Compatible With LabVIEW Real-Time? I need to use RS-422 communication to some of my instruments. Is this possible within LabVIEW Real-Time? URL: http://digital.ni.com/public.nsf/allkb/35B22C0EF47BED45862570B60053E450

RS-422 은 랩뷰 리얼타임(LabVIEW Real-Time)에서 사용할수 있습니까? 가지고 있는 장비와 RS-422 을 사용하여 통신해야 합니다. 랩뷰 리얼타임(LabVIEW Real-Time)내에서 사용할수 있습니까? URL: http://digital.ni.com/public.nsf/allkb/874A45F9F6F32532862570BA0004CD2E

What is the Address of My PCI-485/PXI-485 Card? I have a serial 485 card. There is no documentation stating its address or how to change it. What is the address of my 485 ports? URL: http://digital.ni.com/public.nsf/allkb/778804C0AD3F8EA586256F89008268BE

如何定址我的 PCI-485/PXI-485卡片? 我有一張 serial 485卡片。並沒有文件提到如何設定或改變其位址。如何得知485接埠的位址呢？ URL: http://digital.ni.com/public.nsf/allkb/1C757FEC708DF3C286256F9E0012A4DA

Changing the Wire Mode of a Serial Card on LabVIEW RT 7.1 on a PXI-814x Series Controller Fails with Error -1073807360 I have an application running in LabVIEW RT that changes the wire mode of my RS-485 serial card dynamically. After I upgraded to LabVIEW RT 7.1, it stopped working. I found KnowledgeBase 2EMAARXY (see link below) that explains that you need to set the wire mode using property nodes, instead URL: http://digital.ni.com/public.nsf/allkb/15D2D4942781D7E986256F43006E6F4A

What Is the 10 Pin Connector for the PCI-232/4 Commonly Referred To As? I am trying to build a custom cable for my PCI-232/4 or PCI-485/4 device. Your catalog shows that I need to use a 10 pin connector for this purpose. But I could not find information about the pins in the catalog. Is there a common industrial equivalent for this connector or is it simply the RJ 45 URL: http://digital.ni.com/public.nsf/allkb/6B82ECD1B09152CF86256F3D007074F0

Handshaking in Serial 485 Two Wire Modes I could not find any documentation on when the CTS, RTS, and DTR lines are used in the Serial 485 - Two Wire Transceiver Modes. What are these for? URL: http://digital.ni.com/public.nsf/allkb/3417A78E145D6D6586256F3B005E8503