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delta
- 臺達變頻器通信模塊﹒為RS-485﹐通信模式為MODBUS﹐直接用C語言編譯程序可打開﹒-Taiwan converter communication module. For RS-485, MODBUS communications model, the direct use of C language compiler can be opened.
RS-232RS-422andRS-485
- 详细讲述了RS232,RS485,RS422电平间的不同,及各电平的特点等问题。
MAX485_1281849
- The MAX481E, MAX483E, MAX485E, MAX487E–MAX491E, and MAX1487E are low-power transceivers for RS-485 and RS-422 communications in harsh environments. Each driver output and receiver input is protected against ±15kV electrostatic discharge (ESD)
AccessPort120
- RS-485标准定义了一个极为坚固和可靠的通信链路,具有高噪声抑制、宽共模范围、长传输距离、冲突保护等特性。 但一个真正牢靠的RS-485网络还有赖于合理的应用。合理的网络布局、信号通道的连续性、周全的保护措施等,在设计之初就应该有一个总体规划-RS-485 standard definition of a very robust and reliable communication links with high noise suppression, and wide common-mode
communicate
- VC++ 6.0做的一个串口通信程序,功能与串口调试助手类似。它可以实现两台电脑的串口之间或者一台电脑的两个串口之间互相收发数据。左上角可以通过下拉列表选择不同的串口,默认的是COM1,考虑到笔记本电脑上一般没有串口,用USB转RS-232转换器之后,其COM口一般不为COM1,所以在程序中不做死COM口而是可以在界面中选择COM口,单击“关闭串口”就停止数据的收发。“接收区”对接收到的数据进行显示,接收可以选择自动接收或手动接收,自动接收状态只有检测到有数据发过来就进行显示,不处于自动接收状态
232rs
- vc++6.0编写的串口采集程序,用了缓冲区,实时显示效果很好,供大家学习参考-vc++6.0 prepared by serial acquisition program, with the buffer zone, real-time display a good effect, for them to learn information