communication.zip_PLC_触摸屏资源-CSDN文库

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3 浏览量 2022-07-14 14:51:04 上传评论收藏 11KB ZIP 举报

在工控领域，PLC（可编程逻辑控制器）和触摸屏是常见的自动化设备，用于实现设备控制和人机交互。本话题将详细讲解"communication.zip_PLC_触摸屏"所涉及的知识点，主要关注S3C2410处理器如何在工控触摸屏与电脑、PLC之间建立通讯。 S3C2410是一款基于ARM920T内核的微处理器，由Samsung公司设计，广泛应用于嵌入式系统，包括工控设备。它拥有强大的处理能力，支持多种外设接口，如UART、USB、SPI和I2C等，这些都是实现通讯的关键。在"communication.c"这个源文件中，我们可以推测这是实现通讯协议和功能的核心代码。它可能包含了初始化通讯端口、设置波特率、数据位、停止位以及校验方式的函数，以及发送和接收数据的函数。在工控触摸屏与PLC通讯时，通常会采用串行通讯协议，如RS-232或RS-485，因为它们在长距离传输和多点连接方面具有优势。对于PLC，它通常通过串行接口与外部设备通信，如使用Modbus协议。Modbus是一种通用、公开的工业通讯协议，适用于工业设备间的通信，尤其适合PLC。在"communication.c"中，可能有实现Modbus RTU或ASCII模式的代码，通过解析和构建Modbus报文来与PLC进行数据交换。工控触摸屏一般具备图形化用户界面，允许操作员直观地监控和控制设备。触摸屏与PLC的通讯，通常是为了获取PLC状态、设置参数或发送控制指令。在"communication.c"中，可能会有读取和写入PLC寄存器的函数，这些寄存器对应着PLC的输入/输出点、数据存储区等。至于与电脑的通讯，通常会通过网络接口实现，例如TCP/IP协议。S3C2410支持以太网接口，可以构建基于TCP/IP的网络通讯。"communication.c"可能包含创建网络连接、发送和接收数据的网络编程代码，使得电脑能够远程监控和配置工控触摸屏及与其连接的PLC。总结来说，"communication.zip_PLC_触摸屏"中的"communication.c"文件涵盖了以下关键知识点： 1. S3C2410处理器的通讯接口及其配置。 2. Modbus协议的实现，用于PLC通讯。 3. 串行通讯协议的使用，如RS-232或RS-485。 4. 工控触摸屏与PLC的数据交换机制，包括读写PLC寄存器。 5. 可能涉及的网络编程，实现与电脑的TCP/IP通讯。了解并掌握这些知识点，对开发工控系统和进行设备集成至关重要。通过深入研究"communication.c"，我们可以更深入地理解通讯过程，从而优化和扩展自动化系统的功能。

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communication.zip （1个子文件）

communication.c 83KB

#include <stdlib.h> #include <string.h> #include <stdio.h> #include "2416addr.h" #include "2416lib.h" #include "..\inc\def.h" #include "..\inc\option.h" #include "..\inc\communication.h" #include "..\inc\systemconf.h" //#include <stdio.h> extern char PlcType; extern INTERALMEMORY g_InteralMemory; extern int whichUart; extern U8 com_frequence; extern U8 g_com_Flag ; INT8U ReadBit(INT16U DevNumber,char *DevName) { INT8U bitValue; INT8U num; int count; if((strcmp(DevName,"P_KB")==0) ||(strcmp(DevName,"P_B")==0 )) { return Inn_ReadBit(DevNumber,DevName); } com_frequence++; if(com_frequence > 2) { com_frequence = 0; FeedWacthDog(); } switch(PlcType) { case 0: return FP_ReadBit(DevName[0],DevNumber); break; case 1: return NA_ReadBit(DevNumber); break; case 2: return FX_ReadBit(DevName[0],DevNumber); break; case 3: return DVP_ReadBit(DevName[0],DevNumber); break; case 4: //永宏PLC return FATEK_ReadBit(DevName[0],DevNumber); break; case 7: return Scm_ReadBit(DevNumber); break; case 8: return UniTel_ReadBit(DevNumber); break; case 9://080731 RTU { num = 0; do { for(count=0; count<DELAY_TIME; count++); // 10000 bitValue = RTU_ReadBit(DevNumber); num++; } while((0xff == bitValue) && (num<2)); // 2 通讯失败的时候多试几次 return bitValue; } //return RTU_ReadBit(DevNumber); break; case 10: return VIGOR_ReadBit(DevName[0],DevNumber); break; default: return 255; } } INT8U WriteBit(INT16U DevNumber,char *DevName,U8 Value) { INT8U boolSucceed; INT8U num; int count; if((strcmp(DevName,"P_KB")==0) ||(strcmp(DevName,"P_B")==0 )) { return Inn_WriteBit(DevNumber,DevName,Value); } com_frequence++; if(com_frequence > 2) { com_frequence = 0; FeedWacthDog(); } switch(PlcType) { case 0: boolSucceed = FP_WriteBit(DevName[0],DevNumber,Value); break; case 1: boolSucceed = NA_WriteBit(DevNumber,Value); break; case 2: boolSucceed = FX_WriteBit(DevName[0],DevNumber,Value); break; case 3: boolSucceed = DVP_WriteBit(DevName[0],DevNumber,Value); break; case 4: boolSucceed = FATEK_WriteBit(DevName[0],DevNumber,Value); break; case 7: { num = 0; do { boolSucceed = Scm_WriteBit(DevNumber,Value); num++; } while((FALSE == boolSucceed) && (num<3)); // 通讯失败的时候多试几次 //return boolSucceed; } //return Scm_WriteBit(DevNumber,Value); break; case 8: boolSucceed = UniTel_WriteBit(DevNumber,Value); break; case 9://080731 RTU { num = 0; do { for(count=0; count<DELAY_TIME; count++); // 10000 boolSucceed = RTU_WriteBit(DevNumber,Value); num++; } while((FALSE == boolSucceed) && (num<5)); // 通讯失败的时候多试几次3 //return boolSucceed; } //return RTU_WriteBit(DevNumber,Value); break; case 10: boolSucceed = VIGOR_WriteBit(DevName[0],DevNumber,Value); break; default: boolSucceed = 255; } return boolSucceed; } int ReadWord(INT16U DevNumber,char *DevName) { int wordValue; INT8U num; int count; if((strcmp(DevName,"P_KW")==0) ||(strcmp(DevName,"P_W")==0 )) { return Inn_ReadWord(DevNumber,DevName); } com_frequence++; if(com_frequence > 2) { com_frequence = 0; FeedWacthDog(); } g_com_Flag = TRUE; // 通讯标志 switch(PlcType) { case 0: return FP_ReadWord(DevName,DevNumber); break; case 1: return NA_ReadWord(DevNumber); break; case 2: return FX_ReadWord(DevName,DevNumber); break; case 3: return DVP_ReadWord(DevName[0],DevNumber); break; case 4: return FATEK_ReadWord(DevName[0],DevNumber); break; case 7: return Scm_ReadWord(DevNumber); break; case 8: return UniTel_ReadWord(DevNumber); break; case 9://080731 RTU { num = 0; do { for(count=0; count<DELAY_TIME; count++); // 10000 wordValue = RTU_ReadWord(DevNumber); num++; } while((-1 == wordValue) && (num<2)); // 2 通讯失败的时候多试几次 return wordValue; } // return RTU_ReadWord(DevNumber); break; case 10: return VIGOR_ReadWord(DevName[0],DevNumber); break; default: return 255; } } INT8U WriteWord(INT16U DevNumber,char *DevName,int Value) { INT8U boolSucceed; INT8U num; int count; if((strcmp(DevName,"P_KW")==0) ||(strcmp(DevName,"P_W")==0 )) { return Inn_WriteWord(DevNumber,DevName,Value); } com_frequence++; if(com_frequence > 2) { com_frequence = 0; FeedWacthDog(); } switch(PlcType) { case 0: return FP_WriteWord(DevName,DevNumber,Value); break; case 1: return NA_WriteWord(DevNumber,Value); break; case 2: return FX_WriteWord(DevName,DevNumber,Value); break; case 3: return DVP_WriteWord(DevName[0],DevNumber,Value); break; case 4: return FATEK_WriteWord(DevName[0],DevNumber,Value); break; case 7: { num = 0; do { boolSucceed = Scm_WriteWord(DevNumber,Value); num++; } while((FALSE == boolSucceed) && (num<3)); // 通讯失败的时候多试几次 return boolSucceed; } //return Scm_WriteWord(DevNumber,Value); break; case 8: return UniTel_WriteWord(DevNumber,Value); break; case 9://080731 RTU { num = 0; do { for(count=0; count<DELAY_TIME; count++); // 10000 boolSucceed = RTU_WriteWord(DevNumber,Value); num++; } while((FALSE == boolSucceed) && (num<5)); // 通讯失败的时候多试几次3 return boolSucceed; } //return RTU_WriteWord(DevNumber,Value); break; case 10: return VIGOR_WriteWord(DevName[0],DevNumber,Value); break; default: return 255; } } //////////////////////////////////////////////////////////////////////////////////////// /////////// NERO___PLC /////////// //////////////////////////////////////////////////////////////////////////////////////// INT8U NA_ReadBit(INT16U DevNumber) { U8 auchMsg[7],SendArray[16],RecArray[16]; U8 Result=FALSE; U8 Count; int i; auchMsg[0]=1; auchMsg[1]=1; auchMsg[2]=DevNumber/256; auchMsg[3]=DevNumber % 256; auchMsg[4]=0; auchMsg[5]=1; auchMsg[6]=LRC(auchMsg,6); //校验码 SendArray[0]=0x3a; for(Count=0;Count<7;Count++) { SendArray[Count*2+1]=DataToChar(auchMsg[Count]/16); SendArray[Count*2+2]=DataToChar(auchMsg[Count] % 16); } SendArray[15]=0x0a; //rINTMSK |=BIT_GLOBAL; for(Count=0;Count<16;Count++) //发字符串 { Uart_SendByte(SendArray[Count]); } for(i=0;i<1000;i++); Count = 0; while((RecArray[0]=Uart_Getch())!=':' && Count<=20) Count++; if(RecArray[0]==':') { RecArray[1]=Uart_Getch(); if((RecArray[2]=Uart_Getch())!=0) { for(Count=3;Count<15;Count++) //收字符串 { RecArray[Count]=Uart_Getch(); } } else Result=3; } else Result=3; if(Result!=3) { if(RecArray[4]=='1' && RecArray[3]=='0' && RecArray[7]=='0' && RecArray[8]=='1') { Result=TRUE; } } //rINTMSK &=~(BIT_GLOBAL|BIT_EINT1); return Result ; } U8 NA_WriteBit(INT16U DevNumber,U8 Value) { U8 auchMsg[7],SendArray[16],RecArray[17]; U8 Count; U8 Result=FALSE; int i; auchMsg[0]=1; auchMsg[1]=5; auchMsg[2]=DevNumber/256; auchMsg[3]=DevNumber % 256; if(Value==0) { auchMsg[4]=0; auchMs

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