Microprocessor-network communicaiton method and apparatus

A singal adapter (20) function as an intermediary between a microprossor software and hardware strucutres and transmits the reformated signal to the microporcessor (25). The signal adapter (20) also trnasforms a signal received from the microprocessor (25) into a signal compatible with the network protocol and transmites the transformed signal to the network gateway (12). The signal adapter (20) is capable of establishing a network communciaiton for various kinds of microprocessors without significantly modifying or reprogramming the microprocessors.