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并行通信和串行通信是CPU与外部设备之间进行信息交换的基本方法。采用并行通信时，构成一个字符或数据的各位同时传送，每一位都占用一条通信线，另外还需要联络以保证和外围设备协调地工作，它具有较高的传输速度。但由于在长线上驱动和接收信号较困难，驱动和接收电路较复杂，因此并行通信的传输距离受到限制，这种通信方式多用于计算机内部，或者作为计算机与近距离外围设备传输信息用。,Parallel and serial communication is communication between the CPU
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介绍了如何在VC平台下，实现PC与PLC的一个串行通讯-How VC platform, the PC and PLC serial communication
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Communication networks and
systems in substations –
Part 9-1:
Specific Communication Service
Mapping (SCSM) –
Sampled values over serial unidirectional
multidrop point to point link
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0下载：
Communication networks and
systems in substations –
Part 9-1:
Specific Communication Service
Mapping (SCSM) –
Sampled values over serial unidirectional
multidrop point to point link
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win32. rs232 communication source
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Serial com communication
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Matlab communication with a Programmable Logic Controller (PLC) over an RS-232 serial interface using ASCII Modbus protocol. This code was developed while working with an Eaton-ELC PLC device and was modified for general distribution. Standard Modbus
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serial communication toolbox matlab.. the coding it must want certain toolbox to include-serial communication toolbox matlab.. the coding it must want certain toolbox to include..
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The basic knowledge of serial communication concept (232, 422, 485). PDF
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DESIGN OF SERIAL COMMUNICATION BASED ON VB AND MITSUBISHI PROTOCOL.pdf
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