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CNC program execution in different modes



 CNC program execution in different modes: MDI, Single Block, and Auto. These modes offer varying levels of control and are used for different stages of machining.

1. Manual Data Input (MDI) Mode

MDI mode allows the operator to input and execute single lines or a short sequence of CNC program commands directly through the machine's control panel. It's like having a direct conversation with the CNC machine, telling it exactly what to do, one step at a time.

Key Characteristics:

  • Line-by-Line Execution: Each block of code entered in MDI is executed immediately after the operator presses the cycle start button.
  • Immediate Action: This mode is ideal for performing quick, one-off tasks or checks without needing to write or load an entire program.
  • Setup and Testing: MDI is frequently used during machine setup for tasks like:
    • Moving axes to specific positions.
    • Setting tool offsets.
    • Testing spindle rotation and coolant functions.
    • Executing simple machining operations for testing purposes.
  • No Program Storage (Usually): Generally, the commands entered in MDI are not permanently stored as a program, although some controls might offer the option to save a short sequence.
  • Manual Input: The operator manually types in the G-codes and M-codes required for the desired action.

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