modbus Rtu/Ascii/Tcp 源码，实现了01 , 02, 03, 04，05，06，10, 0F功能码的功能，可以直接加在项目中使用
2019-12-21 22:15:31
86KB
1
usb转rs-485，基于ModBus RTU获取气象站信息，包括CRC校验，增加掉线检测，掉线重连
2019-12-21 22:14:30
614KB
1
void presetSingleRegister(void) //设置单个寄存器
{
U8 addr;
U8 tempAddr;
U8 setCount;
U16 crcData;
U16 tempData;
//addr = (receBuf[2]<<8) + receBuf[3];
//tempAddr = addr & 0xfff;
addr = receBuf[3];
tempAddr = addr; //& 0xff
tempData = ( receBuf[4]<> 8;
sendBuf[3] = addr & 0xff;
sendBuf[4] = receBuf[4];
sendBuf[5] = receBuf[5] ;
setCount = 6; //共6个字节
crcData = crc16(sendBuf,6);
sendBuf[6] = crcData >> 8;
sendBuf[7] = crcData & 0xff;
sendCount = 8;
beginSend();
}
//设置多个寄存器
void presetMultipleRegisters(void)
{
UINT8 addr;
UINT8 tempAddr;
UINT8 byteCount;
UINT8 setCount;
UINT16 crcData;
UINT16 tempData;
UINT8 i;
//addr = (receBuf[2]<<8) + receBuf[3];
//tempAddr = addr & 0xfff;
addr = receBuf[3];
tempAddr = addr & 0xff;
//setCount = (receBuf[4]<<8) + receBuf[5];
setCount = receBuf[5];
byteCount = receBuf[6];
for (i = 0; i < setCount; i++, tempAddr++) {
//SBUF = receBuf[i*2+7];
//SBUF = receBuf[i*2+8];
tempData = (receBuf[i*2+7] <> 8;
sendBuf[3] = addr & 0xff;
sendBuf[4] = setCount >> 8;
sendBuf[5] = setCount & 0xff;
crcData = crc16(sendBuf, 6);
sendBuf[6] = crcData >> 8;
sendBuf[7] = crcData & 0xff;
sendCount = 8;
beginSend();
}码
2019-12-21 22:05:12
8.16MB
1
usb转rs-485，基于ModBus RTU获取气象站信息，包括简单数据库操作，使用vs2013，包括CRC校验，增加掉线检测，掉线重连
2019-12-21 21:56:31
135KB
1
基于QT库的Modbus RTU上位机(Master) ,跨平台,代码功能强大,可扫描从机地址,具备03,06功能,备注全面,已在漏水检测项目中使用,稍加修改即可!
2019-12-21 21:46:11
1.29MB
1
STM32 做的modbus_rtu程序，使用KEIL编写，没有移植FREEMODBUS,适合搞MODBUS协议开发的朋友
2019-12-21 21:36:31
3.82MB
1