这是用MCS51编的Modbus传输的CRC校验源程序，以通过实战的校验，简短！-This is MCS51 series Modbus transmission CRC checksum source in order to realize the check, the short!

This document describes the MODBUS over Serial Line protocol. MODBUS Serial Line protocol is a Master-Slave protocol. This protocol takes place at level 2 of the OSI model. A master-slave type system has one node (the master node) that issues exp

short to modbus server

RS232，RS485是一个物理接口，简单的说是硬件。也可以说是一种通信接口。MODBUS是一种国际标准的通讯协议，用于不同厂商之间的设备交换数据（一般是工业用途）；所谓协议，也可以理解为有人说的“语言”吧，简单的说是软件(RS232, RS485 is a physical interface, in short, hardware. It can also be said to be a communication interface. MODBUS is an international