This paper implies Bluetooth technology, which is put into effect to alter extant, wired into wireless Programmable Logic Controller (PLC). Here two Bluetooth devices are employed as a transceiver to transmit and receives the input signal to contrive wireless PLC. The main advantage of PLC is to control the output according to the status of input. In Bluetooth technology, the handshaking between the two Bluetooth modules takes place, which is interfaced with a microcontroller board (Arduino board) and then to PLC such that field devices can be controlled without wire.

翻译：本文提出采用蓝牙技术将现有的有线可编程逻辑控制器（PLC）改造为无线PLC的方案。该方案使用两个蓝牙设备作为收发器，通过传输与接收输入信号来实现无线PLC控制。PLC的主要优势在于能够根据输入状态控制输出。在蓝牙技术中，两个蓝牙模块之间通过握手协议建立通信，该模块与微控制器板（Arduino板）连接后接入PLC，从而实现无需布线的现场设备控制。