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Modbus 的代码
modbus.cpp
#include "modbus.h"
//#include "extern.h"
#define READ_DI 0x02
#define READWORD 0x03
#define READ_AI 0x04
#define SET_COIL 0x05
void CModbus::send_yxyc()
{
INT16U temp;
askb
modbus.c
#include
#include
#include
#define uchar unsigned char
#define uint unsigned int
#define ulong unsigned long
/* CRC 高位字节值表 */
static uchar code
modbus.lst
C51 COMPILER V7.06 MODBUS 06/26/2006 22:51:02 PAGE 1
C51 COMPILER V7.06, COMPILATION OF MODULE MODBUS
OBJECT MODULE PLACED IN
modbus.c
#include
#include
#include
#define BUFFLEN 1024 /*定义缓冲区大小*/
#define len 50
void InitCOM(); /*PC机232串口初始化，设置波特率和缓冲区，然后打开串口开始通讯*/
void OpenPort(); /*开串口*/
void ClosePo