| Address Characters As per DIN 66025 |
| Character | Meaning |
| A | Rotation about, X-axis |
| B | Rotation about, Y-axis |
| C | Rotation about, Z-axis |
| D & E | Rotational about additional axis |
| F | Feed |
| G | Preparatory Function |
| H | Unassigned |
| I | Thread pitches parallel to X-axis |
| J | Thread pitches parallel to Y-axis |
| K | Thread pitches parallel to Z-axis |
| L | Unassigned |
| M | Machine Function |
| N | Block Number |
| O | Program Number |
| P, Q, R | Parameter are used in cycles |
| S | Spindle speed |
| T | Tool function |
| U, V, W | Second movement parallel to X, Y, Z axes respectively |
| X | Movement in X-axis |
| Y | Movement in Y-axis |
| Z | Movement in Z-axis |