Modbus Master and Slave for Arduino  1.2
Arduino library for implementing a Modbus Master or Slave through Serial port
Class List
Here are the classes, structs, unions and interfaces with brief descriptions:
oCModbusArduino class library for communicating with Modbus devices over USB/RS232/485 (via RTU protocol)
\Cmodbus_tMaster query structure: This includes all the necessary fields to make the Master generate a Modbus query. A Master may keep several of these structures and send them cyclically or use them according to program needs