CNC Cutting Machine Practice Test 2025 – Complete Exam Preparation

The digital to analog converter (DAC) plays a crucial role in the operation of CNC machines by transforming program instructions from digital code into analog voltage signals. This process is essential because the CNC machine components, such as motors and drives, often require analog signals to operate effectively.

When a CNC program is created, instructions are encoded in digital format, which represents commands for movement and operation. However, the physical components of the CNC machine, such as stepper or servo motors, need these commands to be converted into electrical signals they can use. The DAC facilitates this by taking the digital values—instructing the machine on how to move, at what speed, and in which direction—and converting them into corresponding voltage levels that can be interpreted by the hardware.

This capability allows the machine to achieve precise control over its movements by translating the programmed digital commands into the real-world actions required for operations like cutting, milling, or engraving.