through the research of EPA Industrial Ethernet technology, MODBUS fieldbus technology, ARM embedded system
and ȝC/OS-II real-time operating system, this paper discusses how to design and develop communication gateway of
EPA and MODBUS. The communication gateway can realize bidirectional data transceiving on EPA protocol and
MODBUS protocol. The communication gateway can provide a stable, secure, real-time and flexible solution for
process control of the power plant.