模拟MODBUS主从站通信的程序，很经典，程序拿来可用-MODBUS master and slave traffic simulation program, it is classic, the program can be used

modbus协议主站程序，可以用来读写slave站信息，采用SDI方法实现。通讯方式为TCP/IP。-agreement modbus master program, can be used to read and write the slave station, using the SDI method. Means of communication for the TCP/IP.

Modpoll utility for linux and windows platform, this is modbus master(client) utility using it, u can test your modbus slave