Multiprocessor implementation is gaining considerable significance in modern day embedded systems. In systems where more than one processor is used the need for multiprocessor communication occurs. The various motivations for using multiprocessor communication are increased performance, increased reliability, functional modularity, physical distribution of processing power. In this paper multiprocessor approach is implemented for a real time boiler plant control application. A simple prototype for industrial multiprocessor communication system using ATMEL 89C51 microcontroller via serial communication RS-232 protocol is discussed. In this communication scheme failure in communication link is detected by using microprocessor-fault detection protocol.