modbus 协议和测试用的源码，适合于GNU/Linux-modbus protocol and testing of the source code, for GNU/Linux

最新开源Modbus协议栈，包括RTU和TCP功能。-libmodbus is a free software library to send/receive data with a device which respects the Modbus protocol. This library can use a serial port or an Ethernet connection.

libmodbus 针对linux的平台还是还非常好的代码(Libmodbus's platform for Linux is still very good code)