EXTCYCLE - Extended cycle

Command caption

How the command appears in the CLData command list:

EXTCYCLE ON(71)|CALL(52)|OFF(72) DRILL(163)|FACE(81)|TAP(168)|DEEP(153)|W5DDrill(481)|
         W5DBore5(485)|LATHEROUGH(401)|LATHETHREAD(403)|... {, a} {, b} {, c} ...

Use the extended cycle command EXTCYCLE to process standard cycles. The following is the list of standard cycles supported by the EXTCYCLE command:

• Lathe finish cycle G70, G73 - LATHEFINISH(400)
• Lathe roughing cycle G71, G72 - LATHEROUGH(401)
• Lathe grooving cycle G74,G75 - LATHEGROOVE(402)
• Lathe threading cycle G76 - LATHETHREAD(403)
• Lathe threading single pass cycle G92 - LATHETHREADG92(404)
• Lathe drilling cycle G81 - DRILL(163)
• Lathe drilling cycle G82 - FACE(81)
• Lathe tapping cycle G84 - TAP(168)
• Lathe drilling with chip breaking cycle - BRKCHP(288)
• Lathe drilling with chip removing cycle - DEEP(153)
• Drilling cycle G81 - W5DDrill(481)
• Drilling cycle G82 - W5DFace(482)
• Drilling with chip removing cycle G83 - W5DChipRemoving(483)
• Drilling with chip breaking cycle G73 - W5DChipBreaking(473)
• Tapping cycle G84 - W5DTap(484)
• Drilling cycle G85 - W5DBore5(485)
• Drilling cycle G86 - W5DBore6(486)
• Drilling cycle G87 - W5DBore7(487)
• Drilling cycle G88 - W5DBore8(488)
• Drilling cycle G89 - W5DBore9(489)
• Thread milling cycle - W5DThreadMill(490)
• Hole pocketing cycle - W5DHolePocketing(491)
• Probing cycle - WProbing(500)

Access from sppx

Handler: program ExtCycle

The cld array is read by index or by name - in sppx by the typed short name (e.g. cld.X), in .NET by the same name as a string key (e.g. cld["X"]).

Parameter	CLD array	CLD name	Description
ON(71) CALL(52) OFF(72)	CLD[1]	CLD.SubCmd	Command modifier: ON(71) – turn standard cycle ON, CALL(52) – call standard cycle, OFF(72) – turn standard cycle OFF.
LATHEFINISH(400) LATHEROUGH(401) LATHEGROOVE(402) LATHETHREAD(403) DRILL(163) FACE(81) TAP(168) BRKCHP(288) DEEP(153) W5DDrill(481) W5DFace(482) W5DChipRemoving(483) W5DChipBreaking(473) W5DTap(484) W5DBore5(485) W5DBore6(486) W5DBore7(487) W5DBore8(488) W5DBore9(489) W5DThreadMill(490) W5DHolePocketing(491) WProbing(500)	CLD[2]	CLD.SubType	Cycle type identifier.
a, b, c, d …	CLD[3] – CLD[258]	CLD.CLParams(1) – CLD.CLParams(256)	Cycle parameters list.

The first parameter is used to specify the start, call and cancellation of the standard cycle.

CAM system usually generates technology command sequence containing EXTCYCLE command similar to the following:

EXTCYCLE ON(71) ...
FEDRAT ...
GOTO ...
GOTO ...
EXTCYCLE CALL(52) ...
FEDRAT ...
GOTO ...
GOTO ...
EXTCYCLE CALL(52) ...
FEDRAT ...
GOTO ...
GOTO ...
EXTCYCLE CALL(52) ...
EXTCYCLE OFF(72) ...

The list of parameters depends on the cycle type.

Example (from the Fanuc (30i)_Mill postprocessor):

program ExtCycle
  if cld[1] = 71 then CycleOn = 1                    ! cycle On
  else if cld[1] = 72 then begin                     ! cycle Off
    if (CLD.SubType >= 473) and (CLD.SubType <= 489) then Cycle = 80
    OutBlock
  end else if cld[1] = 52 then begin                 ! cycle Call
    if cld[10] > 0 then
      if cld[9] = 0 then Fr = cld[10]*S else Fr = cld[10]   ! feed units / value
  end

Access from .NET

Besides the base OnExtCycle, the command is dispatched (by cycle family) to one of the specialized handlers below:

public override void OnExtCycle(ICLDExtCycleCommand cmd, CLDArray cld)        // base
public override void OnHoleExtCycle(ICLDExtCycleCommand cmd, CLDArray cld)    // hole cycles
// also, by cycle family: OnTurnExtCycle, OnProbeExtCycle, OnWeldingExtCycle, OnPickAndPlaceExtCycle

Inheritance: ICLDExtCycleCommand : ICLDCommand.

Read the parameters from the strongly-typed cmd object (recommended); the raw cld[i] array (same indices as in sppx) and the named cmd[...] helpers are available too. The table lists the command's members, including those inherited from its base interfaces; the common ICLDCommand members (navigation, CLD, CLDFile, TechOperation, ...) are described in the CLData access model. The raw cld[i] array is available with the same indices as in sppx, and the parameters are also reachable by numerical code through cmd.Prm.

Member	Type	Description
cmd.IsOn cmd.IsOff cmd.IsCall	bool	True if it is a cycle switch-ON / switch-OFF / CALL command.
cmd.CycleType	int	Numerical code of the cycle type (simple drilling, deep drilling, tapping, OD turning, ...). See the constants in the CLDCycle class.
cmd.Prm	ICodeParametersOfCLDCommand	The parameter list; get a value by its numerical code.

cmd.Prm gives ParamCount, Code(i), ParamType(i), IndexOfCode(code), and value indexers Prm.Flt[code] / Prm.Int[code] / Prm.Bol[code] / Prm.Str[code].

Example (from the Sinumerik 840D mill postprocessor - note the cld[i] access):

public override void OnHoleExtCycle(ICLDExtCycleCommand cmd, CLDArray cld)
{
    if (cmd.IsOn)
    {
        nc.GFeed.v = cld[9] == 1 ? 94 : 95;   // work-feed units (same cld index as sppx)
        nc.Feed.v = cld[10];                  // work-feed value
        nc.Block.Out();
    }
    else if (cmd.IsOff)
        nc.G.Show(80);                        // cancel the cycle
    // else if (cmd.IsCall) dispatch by cmd.CycleType ...
}

See also

• CLData access model