LabVIEW串口通信 串口通信(Serial Communications)的概念非常简单,串口按位(bit)发送和接收字节的通信方式。在LabVIEW中串口通信使用范围非常广泛,例如,通过串口使用ModBus协议驱动仪器、串口驱动PLC设备等。 在LabVIEW中有专业的VI(VISA)可以驱动串口进行数据读、写操作,在函数面板 → 仪器I/O → 串口子面板中,如下图...
利用rs485使用serial作连结 Modbus_Serial.vi (52.48 KB, 下载次数: 33)//--- 好贴哦，...
1、Modbus库 1.1、线圈操作 1.1.1、读取线圈 1.1.2、写入单线圈 1.1.3、写入多线圈 1.2、保持寄存器操作 1.2.1、读取保持寄存器 1.2.2、 写入单个保持寄存器 1.2.3、写入多个保持寄存器 1.3、读取离散输入 1.4、 读取输入寄存器 2、VISA串口 2.1、线圈操作 2.1.1、读取线圈 2.1.2、 写入单线圈 2.1.3、...
See Also: Using Touch Screens with LabVIEW through Modbus Serial - Example VIs 2. Required Hardware and Software You must have the following hardware and software installed to perform the procedures outlined in this document: Host PC and/or NI CVS-145x device LabVIEW version 7.1 and later ...
NI Modbus库下载地址http://www.ni.com/example/29756/en/ 下载后,将NI Modbus.llb文件拷贝到 National Instruments\LabVIEW 2018\vi.lib目录下 打开Labview,可以在程序框图看到NI Modbus palette. 读取接口数据: Serial Parements: VISA resource name:
NI LabVIEW software can communicate with a programmable logic controller (PLC) in a variety of ways. Modbus is a serial communication protocol published by Modicon in 1979 to communicate with PLC, and was then extended to the TCP protocol. Modbus became
LabVIEW Modbus API The MODBUS library is a free, downloadable set of Virtual Instruments (VIs) that provide Modbus communication from any standard Ethernet or serial port. The LabVIEW library implements the Modbus protocol in software and offers both master and slave functionality. Using the Modbus...
...30 八,使用虚拟串口...34 九,使用串口调试小助手...
具体可参考LabVIEW例子,help --> find example --> search:serial。 [2006-10-12 11:39:58] [问:yuyuqingcheng] 信号发生、数字滤波等模块能否公开其源代码?如果能看,应当如何操作? [答:bf] LabVIEW的VI都有详细的帮助,如果对其不了解,也可以询问NI的技术支持。 [2006-10-12 11:40:59] [问:my...
Delphi Modbus RTU Library supporting serial and tcp/ip data connections under Windows and Linux . Perform easily Modbus client-server device functionality in your application written for example with C++, C#, Delphi, LabVIEW, Pascal, Visual Basic (incl. NET, NET Core) or Java. Modbus protocol ...