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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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LTE关键技术
LTE的关键技术,包含ofdm、MIMO技术、快速MAC调度技术、双工技术、链路自适应技术、告诫调制等。频域多只。
- 2022-08-17 18:56:05下载
- 积分:1
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波峰因数消减在无线通信系统的设计研究,包括wcdma,Td
波峰因数消减在无线通信系统的设计研究,包括wcdma,Td-scdma以及wimax等系统-peaks abatement factor in the wireless communications system design, including wcdma. Td- scdma systems and wimax
- 2022-05-28 05:16:11下载
- 积分:1
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文件为Delphi下的.pas源文件,该文件为一个串口通讯的封装类....
文件为Delphi下的.pas源文件,该文件为一个串口通讯的封装类.-document for the Delphi. Pas source document, which for a serial communications package category.
- 2022-07-21 06:13:10下载
- 积分:1
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提出一种改进的波形存储直读法产生宽带雷达线性调频信号的设计方隶...
提出一种改进的波形存储直读法产生宽带雷达线性调频信号的设计方隶-An improved waveform storage method produce wideband radar LFM the design side scribe
- 2022-10-04 23:25:04下载
- 积分:1
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CRC verification, specific methods can be used in many programs
CRC的验证,具体方法可以运用在许多程序中-CRC verification, specific methods can be used in many programs
- 2022-03-21 18:21:38下载
- 积分:1
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文章中研究了在MC
文章中研究了在MC-MFSK通信系统的多址通信检测问题-Research article Communication in the MC-MFSK multiple access communication system detection
- 2022-03-22 00:04:54下载
- 积分:1
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基于BlueSleil的Sample
查找附近的蓝牙设备
确定安装了蓝牙和BlueSleil...
基于BlueSleil的Sample
查找附近的蓝牙设备
确定安装了蓝牙和BlueSleil-BlueSleil based on the search for near Sample Bluetooth equipment installed to determine Bluetooth and B lueSleil
- 2023-07-23 07:20:04下载
- 积分:1
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用C编写的GPS时间采集程序,对于对时间精度要求很高系统值得借鉴...
用C编写的GPS时间采集程序,对于对时间精度要求很高系统值得借鉴- GPS time gathering procedure compiles which with C, regarding
is worth to the time precision request very high system profiting from
- 2022-08-14 21:07:06下载
- 积分:1
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AT Command for work with pc and mobile modem and etc.
AT Command for work with pc and mobile modem and etc.
- 2022-05-18 02:29:56下载
- 积分:1