vb与三菱PLC的通信例子 对初学者很有用的
上传时间： 2016-10-18
上传用户：笨小孩
The Inter IC bus or I2C bus is a simple bidirectional two wire bus designed primarily for general control and data transfer communication between ICs. Some of the features of the I2C bus are: • Two signal lines, a serial data line (SDA) and a serial clock line (SCL), and ground are required. A 12V supply line (500mA max.) for powering the peripherals often may be present. • Each device connected to the bus is software addressable by a unique address and simple master/ slave relationships exist at all times masters can operate as master-transmitters or as master-receivers. • The I2C bus is a true multi-master bus including collision detection and arbitration to prevent data corruption if two or more masters simultaneously initiate data transfer systems. • Serial, 8-bit oriented, bidirectional data transfers can be made at up to 100 KBit/s in the standard mode or up to 400 KBit/s in the fast mode.
标签： bus bidirectional primarily designed
上传时间： 2013-12-11
上传用户：jeffery
一个垃圾压缩车的PLC程序。采用X端口作为模拟量转换后的数据量输入口。这种方法不需要买模拟量模块，1000块就省下来了！
上传时间： 2013-12-18
上传用户：waitingfy
Universal Serial Bus Device Class Specification for Device Firmware Upgrade
标签： Device Specification Universal Firmware
上传时间： 2016-10-22
上传用户：671145514
VB环境下PLC和上位机通信的实现 关键词：上位机；MSComm通信；可编程控制器
上传时间： 2013-12-05
上传用户：xaijhqx
omron PLC的编程实例。可编程控制器控制led一秒闪烁，红绿灯程序，可编程控制器实现算数平均值等
上传时间： 2016-10-23
上传用户：shawvi
Introduce the wishbone bus .
标签： Introduce wishbone the bus
上传时间： 2013-11-28
上传用户：lacsx
从西门PLC读取数据，上传到pc机，需要西门子Prodave封装库（隐式方法，.lib文件）
上传时间： 2014-01-12
上传用户：coeus
Discription: This multi-master driver provides the software interface to the I2C Bus hardware of the M3062x series of MitsubishiMCU.
标签： multi-master Discription interface the
上传时间： 2016-10-28
上传用户：ljt101007
西门子 PRODAVE 使用手册 可用于VB VC 与PLC通讯
上传时间： 2016-10-31
上传用户：chenxichenyue
