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multi RS485的简单现场总线通信系统设
- 基于RS485的简单现场总线通信系统设计,功能如下:单发单收,在发送状态,能够连续发送从0到99的数字; 单发单收,在接收状态,能够接收数据,并在数码管上正确地显示出来; 单发多收,在AB完成的基础上,接上多个接收设备,能够正确发送和接收; -Based on a simple RS485 field bus communication system design, the following functions: single single collection, send
107215819TCPmodbushy
- modbus协议已经成为工控领域的一种重要的现场总线标准。本源代码用C语言描述了Modbus协议的实现。-Modbus protocol has become an important industrial area of the field bus standard. Using C language source code describes the implementation of the Modbus protocol.
vbclienter
- 这是一个关于OPC现场工业总线技术的工程。主要解决上位机与下位机之间的通信。-This is a bus on the OPC field of industrial engineering. Mainly to solve the host computer and the next crew communication.
VB_ADS_PLC
- VB和PLC之间进行ADS通讯的实现源码,行业为有关计算机控制和现场总线技术的,BECKHO-VB and PLC ADS communication between the implementation of source, industry-related computer control and field bus technology, BECKHOFF
VB_ADS_PLC_RT
- VB和PLC之间进行ADS通讯的实现源码,行业为有关计算机控制和现场总线技术的,BECKHO-VB and PLC ADS communication between the implementation of source, industry-related computer control and field bus technology, BECKHOFF
VB_ADS_PLC_Test
- VB和PLC之间进行ADS通讯的实现源码,行业为有关计算机控制和现场总线技术的,BECKHO-VB and PLC ADS communication between the implementation of source, industry-related computer control and field bus technology, BECKHOFF
ADS-OCX_Sample01
- VB和PLC之间进行ADS通讯的实现源码,行业为有关计算机控制和现场总线技术的,BECKHO-VB and PLC ADS communication between the implementation of source, industry-related computer control and field bus technology, BECKHOFF
ADS-OCX_Sample02
- VB和PLC之间进行ADS通讯的实现源码,行业为有关计算机控制和现场总线技术的,BECKHO-VB and PLC ADS communication between the implementation of source, industry-related computer control and field bus technology, BECKHOFF
pcbianpinqi
- 目前,在我国现场控制总线中,RS-485 使用最为普遍。RS-485 总线的共模输出电压在 -7V 至+12V 之间,具有抑制共模干扰的能力,数据传输速率最大为10Mbit/s,当波特率为1200bps 时最大的传输距离理论上可达15 千米。RS-485 网络所具有的设备简单、容易实现、传输距离远、维护方便等优点而被许多变频器厂家所采用。源码基于RS-485 变频器与PC 机串行通信的硬件特性,通信协议及软件实现,实验表明该通信软件稳定可靠,能直观的观看变频器的实际运行状态,并能比较方便的进