A programmable logic controller (PLC) with voice control includes a CPU configured to run an application program, a condition monitoring system (CMS) configured to provide condition data of an industrial unit, a microphone input for providing microphone data, the microphone input connected with the CMS, which is configured to receive the microphone data, determine an audio file using the received microphone data, and provide the audio file to the CPU; wherein the application program is configured to determine a control command for the PLC using the provided audio file.

The method includes a car diagnostic method based on mobile phone voice mode which includes the following steps: step 1, providing a connector which will be mounted to a car, downloading a client to a mobile phone, opening a microphone of the mobile phone or opening the client by a user to input voice; step 2, interpreting voice content and executing commands by the client after the client had received the input voice; step 3, communicating the client software with the connector mounted on the car automatically; step 4, starting a diagnostic software, collecting data from the car, and analyzing the data from the car professionally to form a diagnostic result, by the client; step 5, transmitting the diagnostic result to the client, outputting the diagnostic result to the user via voice mode, and storing the diagnostic result.

A programmable logic controller (PLC) with voice control includes a CPU configured to run an application program, a condition monitoring system (CMS) configured to provide condition data of an industrial unit, a microphone input for providing microphone data, the microphone input connected with the CMS, which is configured to receive the microphone data, determine an audio file using the received microphone data, and provide the audio file to the CPU; wherein the application program is configured to determine a control command for the PLC using the provided audio file.