CYCLE FACE(81) - G82 drilling cycle
Kept for compatibility. CYCLE is retained only for compatibility with older postprocessors. Current versions of the CAM system generate the extended cycle command EXTCYCLE instead: it offers more capabilities and lets the CAM system fully simulate all of the cycle's nested motions, which CYCLE does not. Output of CYCLE can still be turned on in the CAM system settings, but this is not recommended.
G82 drilling with dwell canned cycle performs drilling with rapid approach to safe level, dwell at Z min level with work feed rate and retracts to the safe plane level at rapid feed rate. Dwell is specified by command parameters.

G82 drilling cycle includes:
- Rapid approach to Z safe level.
- Work feed rate travel to Z min level.
- Dwell at Z min level.
- Rapid retraction to Safe plane level.
Command
CYCLE FACE(81), A a, MMPM(315), N nm, F f, P p, DWELL(279) h, T t
or
CYCLE FACE(81), A a, MMPR(316), M nm, F f, P p, DWELL(279) h, T t
Parameters
| Parameter | CLD array | CLD name | Description |
|---|---|---|---|
| FACE(81) | CLD[1] | CLD.Type | Cycle type 81 (FACE). |
| a | CLD[2] | CLD.A | Hole depth in current measure units (mm or inches). |
| MMPM(315) MMPR(316) |
CLD[3] | CLD.MMPM | Feedrate measure units: 315 (MMPM) – mm per minute (inches per minute), 316 (MMPR) – mm per revolution (inches per revolution). |
| nm | CLD[4] | CLD.NM | Feedrate value. |
| f | CLD[5] | CLD.F | Safe level. |
| CLD[6] CLD[7] |
Reserved. | ||
| p | CLD[8] | CLD.P | Safe plane level. |
| DWELL | CLD[9] | CLD.DWell | Dwell time keyword. |
| h | CLD[10] | CLD.H | Dwell time in seconds. |
| t | CLD[11] | CLD.Top | Hole top level. |
Access from .NET
Delivered through the OnCycle handler (dispatch on the cycle type in cmd/cld[1]):
public override void OnCycle(ICLDCycleCommand cmd, CLDArray cld)
See Hole machining cycles (CYCLE) for the common .NET model.