对于modbus ascii协议可以自动计算添加LRC校验码。-For modbus ascii protocol can automatically add the LRC checksum calculation.

LRC校验，一款很实用的校验工具，用于串口配置过程中的校验，数据传输时候用的，简单便捷，相信会帮到大家。-LRC check, a very useful verification tool for serial configuration process validation, data transfer time to use, simple and convenient, I believe will help you.

CRC校验码，用于modbus，可以保证传输数据不出错(CRC check code, used in modbus, can guarantee the transmission of data without error)