PLC HAVING WIRELESS COMMUNICATION FUNCTION, ESPECIALLY MOUNTING A BLUETOOTH MODULE IN PLC

摘要

PURPOSE: A PLC(Programmable Logic Controller) having a wireless communication function is provided to perform a wireless communication operation between the PLC and peripheral devices by mounting a Bluetooth module for supporting short distance wireless communication into the PLC. CONSTITUTION: A PLC includes a power module(10), a CPU module(20), and a communication module(30). A Bluetooth module(31) for supporting short distance wireless communication is mounted in the communication module of the PLC. The CPU module and the communication module communicate with each other by the Bluetooth module. Accordingly, PLC slaves(a,b,c) including the Bluetooth module and the PLC communicate with each other by the Bluetooth module using a wireless communication method.