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The performance of a machine cutting tool has a significant effect on the processing quality. Thus, it is essential to design a robust system for monitoring and predicting failures of a machine tool by using its working parameters. In this study, a wireless sensor system has been developed for monitoring the processing state of the machine cutting tool. The proposed sensor system architecture is based on the IEEE 1451 smart transducer interface standard. This IEEE 1451-based sensor system is integrated within the tool holder. The collected data are wirelessly transmitted to an external embedded device in real time, thereby enhancing the processing quality. These acquired sensor data are preprocessed and parsed for feature extraction. The experimental results show that the proposed IEEE 1451-based sensor system successfully detects the vibration instability in a CNC milling operation.Keywords-machine monitoring; intelligent sensors; network capable application processor (NCAP); smart transducer interface module (STIM); transducer electronic data sheet (TEDS); transducer independent interface (TII)