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串口通信的基本概念 NI Home 33 ratings: 4.21 out of 5 Rate this Document 串口通信的基本概念 主要软件: Driver Software>>NI-Serial 主要软件版本: 1.7 主要软件修正版本: N/A 次要软件: N/A 硬件: Serial 问题: 我从那里能够学到串口通信的基本知识 解答: 串口通信的基本概念 1，什么是串口？ 2，什么是RS-232？ 3，什么是RS-422？ 4，什么是RS-485？ 5，什么是握手？ 1，什么是串口？ 串口是计算机上一种非常通用设备通信的协议（不要与通用串行总线Universal Serial URL: http://digital.ni.com/public.nsf/allkb/9F439B3D68D9072F4825703000383197

序列埠通訊基本概念 NI Home 7 ratings: 3.85 out of 5 Rate this Document 序列埠通訊基本概念 主要軟體: Driver Software>>NI-Serial 主要軟體版本: 1.7 主要軟體修正版本: 次要軟體: N/A 硬體: Serial 問題: 我從哪裡可以學習到序列埠通訊的基本概念呢? 解答: 序列埠通信的基本概念 1，什麼是序列埠？ 2，什麼是RS-232？ 3，什麼是RS-422？ 4，什麼是RS-485？ 5，什麼是交握？ 1，什麼是序列埠？ 序列埠是電腦上一種非常通用設備通信的協定（不要與通用串列匯流排Universal Serial URL: http://digital.ni.com/public.nsf/allkb/4CFF7C3555A421F78625705D002AFCF4

Why is the Most Significant Bit Left Out for Every Other Byte in a Serial Communication? Why is the most significant bit sometimes left out in serial communication? For example, when I want to send FFFFFF the value that is actually sent is FF7F7F. URL: http://digital.ni.com/public.nsf/allkb/3BA3353607FCBEA586256F69005B6DB4

Why Can I Not Access COM Port 10 and Higher After Upgrading From LabVIEW 6.1? After upgrading to LabVIEW 7.0 from LabVIEW 6.1, my serial communication on COM Port 10 and higher no longer works, even though the rest of my ports are communicating just fine. URL: http://digital.ni.com/public.nsf/allkb/4E85E5BC52865F8A86256E9B00677BAB

Comunicación Serial: Conceptos Generales ¿Existe algún documento que explique las bases de la comunicación serial? URL: http://digital.ni.com/public.nsf/allkb/039001258CEF8FB686256E0F005888D1

VISA Cannot Read the Wire Mode Property as Set in Device Manager I am using a 485 Serial port in Two-Wire (half-duplex) mode. When I read the property node for wire mode in VISAIC or LabVIEW it returns a -1 (Unknown) even though I have set the wire mode for the port externally. Why does this happen? URL: http://digital.ni.com/public.nsf/allkb/70A8A30CAE629BFA86256DC9007A0423

My Operating System Hangs When Booting With Powered-On Devices Connected to My Serial Ports I have a serial board installed in my computer with Windows NT. My operating system hangs when booting with powered-on devices that are connected to my serial ports. URL: http://digital.ni.com/public.nsf/allkb/348367225079F32E86256930006FD480

Serial Communication General Concepts What is Serial? Back to Top Serial is a very common protocol (not to be confused with Universal Serial Bus or USB) for device communication that comes standard on just about every PC. Most computers include two RS-232 based serial ports. URL: http://digital.ni.com/public.nsf/allkb/2AD81B9060162E708625678C006DFC62

My PCI-232/8 and PCI-232/4 Hangs My Computer My PCI-232/8 or PCI-232/4 board passes the diagnostics. As soon as I read from my board, Windows 95 crashes. When writing to my board, it works fine. The same boards that failed in my computer work in other computers for both reads and writes. URL: http://digital.ni.com/public.nsf/allkb/CFF61C1F2ECED61B862566B900808B33

RS-232 Function ComRdTerm Incorrectly Sets rs232err to -99 When using the RS-232 ComRdTerm function, if the specified termination character is read from the in queue buffer, the function should return with the data received and the rs232err global variable should be set to zero. It is incorrectly being set to -99 which states that URL: http://digital.ni.com/public.nsf/allkb/265D743ECD71677A86256107004F24F0