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c# plc modibus 通信
c# 串口 以太网通信 modibus 连接 plc
从文本框输入负数 -2 补码=反+1=进位+原数
Vb 清除输入缓冲区 输出缓冲区 c#用不用清除??哪个函数??
//發送二進制數據 ??????????????
private void SendBytesData(SerialPort serialPort)
{ ////从 文本框取得数据 如果负数 -2 怎么办????
byte[] bytesSend = Encoding.Default.GetBytes(txtSend.Text);
spcom.Write(bytesSend, 0, bytesSend.Length);
}
通过MODBUS TCP读写PLC源码
功能模块一:读写PLC主模块
using System;
using System.Net;
using System.Net.Sockets;
public static void WriteWord(int mwAddress,int mwValue)
{写字到以太网
if (init_plc() == 0)
{
try
{
hi = mwAddress / 256;
low = mwAddress - hi * 256;
hi1 = mwValue / 256; ///////////16bit
low1 = mwValue - hi * 256;
sendBuf[7] = 6;
sendBuf[8] = (byte)hi;
sendBuf[9] = (byte)low;
sendBuf[10]
- 2022-07-10 15:42:30下载
- 积分:1
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LEACH-energy,
leach energy caluation
- 2022-03-24 23:39:46下载
- 积分:1
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本文是关于自动频率控制在通信系统中的应用方面的文章
本文是关于自动频率控制在通信系统中的应用方面的文章-This is the automatic frequency control on the communication system in the application of article
- 2022-02-01 12:02:15下载
- 积分:1
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directories algorithm is simple, but complex, the primary value cards issued
通讯录 算法简单,但是比较复杂,有初级卡发价值-directories algorithm is simple, but complex, the primary value cards issued
- 2022-08-22 21:05:13下载
- 积分:1
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C++实现的串口通信类,已经封装好的,希望有帮助。
C++实现的串口通信类,已经封装好的,希望有帮助。-C++ Realize the serial communication type has a good package, I hope have helped.
- 2023-07-31 00:00:02下载
- 积分:1
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7号信令的使用说明
7号信令的使用说明 -Usage of SS7
- 2022-03-23 23:55:06下载
- 积分:1
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3G mobile communication UMTS PCCard message monitoring
3G移动通信UMTS PCCard短信监控-3G mobile communication UMTS PCCard message monitoring
- 2022-03-24 07:09:11下载
- 积分:1
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数字通信好书!! 伯克利教材
数字通信好书!! 伯克利教材-Digital communications books! ! ! ! Berkeley Teaching Materials
- 2022-04-16 01:51:53下载
- 积分:1
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dos environment in assembly language to write the clock procedures, including ma...
在dos环境下用汇编语言写的clock程序,包括许多中断处理-dos environment in assembly language to write the clock procedures, including many interrupt handling
- 2022-04-22 18:48:18下载
- 积分:1
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Chinese RFC documents, without translation, the right to study very helpful!
中文RFC文件,无需翻译,对学习很有帮助!
- 2022-01-25 23:23:38下载
- 积分:1