Display of technology data

Activation for reading the technology data

In order to read the above-mentioned parameters, activation via ADS is required first.

The function must be activated before the start of the NC program, or earlier. It remains active until either a TwinCAT restart is performed or the function is reset explicitly.

Reading the currently active zero shift

This command reads the active zero shift of the segment currently in block execution (SAF). If no zero shift is active (G53), the structure for the individual components contains a zero vector. These data can be used for switching the display between machine coordinates and programming coordinates, for example.

The data, which are read with the function block 'ItpReadZeroShift', for example, may differ from these values, since the interpreter data are read with the function block, which may already take into account new offsets.

Reading the currently active rotation

This command reads the active rotation of the segment currently in block execution (SAF).

Reading the currently active G-Code

The G-Code is subdivided into groups. For example, the geometries types with modal effect (G01, G02...) and the plane selection (G17..G19) form separate groups. When the G-Code information is read, the enumerator for the groups is also read. These can then be displayed in an application-specific manner.

Since the read command comes with a parameter to be read, not all groups have to be read. The memory provided is always filled by group 1. If, for example, the transferred memory size is 3x8 bytes, the data for the block counter, group 1 and 2 are returned.

#define GCodeOffset 0x1000
#define CommonIdentOffset 0x2000 // used for non-g-code commands, like rot, cfc...

Group 1: ModalGeoTypes

enum GCodeGroup_ModalGeoTypes
{
    ModalGeoTypeUndefined = 0,
    ModalGeoTypeG0 = 0 + GCodeOffset, // line - rapid traverse
    ModalGeoTypeG01 = 1 + GCodeOffset, // straight line
    ModalGeoTypeG02 = 2 + GCodeOffset, // circle clockwise
    ModalGeoTypeG03 = 3 + GCodeOffset // circle anticlockwise
}; 

Group 2: BlockwiseGeoTypes

enum GCodeGroup_BlockwiseGeoTypes
{
    BlockwiseGeoTypeNone = 0,
    BlockwiseGeoTypeG04 = 4 + GCodeOffset, // dwell time
    BlockwiseGeoTypeG74 = 74 + GCodeOffset, // homing
    BlockwiseGeoTypeCip = 1 + CommonIdentOffset // circle parametrized with 3 points
}; 

Group 3: ModalPlaneSelection

enum GCodeGroup_ModalPlaneSelection
{
    ModalPlaneSelectUndefined = 0,
    ModalPlaneSelectG17 = 17 + GCodeOffset, // xy-plane
    ModalPlaneSelectG18 = 18 + GCodeOffset, // zx-plane
    ModalPlaneSelectG19 = 19 + GCodeOffset // yz-plane
}; 

Group 4: ModalToolCompensation

enum GCodeGroup_ModalToolCompensation
{
    ModalToolCompUndefined = 0,
    ModalToolCompG40 = 40 + GCodeOffset, // tool compensation off
    ModalToolCompG41 = 41 + GCodeOffset, // tool compensation left
    ModalToolCompG42 = 42 + GCodeOffset // tool compensation right
}; 

Group 5: ModalToolFeedDirection

enum GCodeGroup_ModalToolFeedDirection
{
    ModalToolFeedDirUndefined = 0,
    ModalToolFeedDirPos = 2 + CommonIdentOffset, // tool feed direction positive
    ModalToolFeedDirNeg = 3 + CommonIdentOffset // tool feed direction negative
}; 

Group 6: ModalZeroShift

enum GCodeGroup_ModalZeroShift
{
    ModalZeroShiftUndefined = 0,
    ModalZeroShiftG53 = 53 + GCodeOffset, // zero shift off
    ModalZeroShiftG54G58G59 = 54 + GCodeOffset, // zero shift G54 + G58+ G59
    ModalZeroShiftG55G58G59 = 55 + GCodeOffset, // zero shift G55 + G58+ G59
    ModalZeroShiftG56G58G59 = 56 + GCodeOffset, // zero shift G56 + G58+ G59
    ModalZeroShiftG57G58G59 = 57 + GCodeOffset // zero shift G57 + G58+ G59
}; 

Group 7: ModalAccurateStop

enum GCodeGroup_ModalAccurateStop
{
    ModalAccurateStopNone = 0,
    ModalAccurateStopG60 = 60 + GCodeOffset // modal accurate stop
}; 

Group 8: BlockwiseAccurateStop

enum GCodeGroup_BlockwiseAccurateStop
{
    BlockwiseAccurateStopNone = 0,
    BlockwiseAccurateStopG09 = 9 + GCodeOffset, // common accurate stop
    BlockwiseAccurateStopTpm = 4 + CommonIdentOffset // target position monitoring
}; 

Group 9: ModalDesignationAbsInc

enum GCodeGroup_ModalDesignationAbsInc
{
    ModalDesignAbsIncUndefined = 0,
    ModalDesignAbsIncG90 = 90 + GCodeOffset, // absolute designation
    ModalDesignAbsIncG91 = 91 + GCodeOffset // incremental designation
}; 

Group 10: ModalDesignationInchMetric

enum
GCodeGroup_ModalDesignationInchMetric
{
    ModalDesignInchMetricUndefined = 0,
    ModalDesignInchMetricG70 = 70 + GCodeOffset, // designation inch
    ModalDesignInchMetricG71 = 71 + GCodeOffset, // designation metric
    ModalDesignInchMetricG700 = 700 + GCodeOffset, // designation inch & feedrate recalculated
    ModalDesignInchMetricG710 = 710 + GCodeOffset // designation metric & feedrate recalculated
}; 

Group 11: ModalFeedRateInCurve

enum GCodeGroup_ModalFeedRateInCurve
{
    ModalFeedRateInCurveUndefined = 0,
    ModalFeedRateInCurveCfc = 5 + CommonIdentOffset, // constant feed contour
    ModalFeedRateInCurveCfin = 6 + CommonIdentOffset, // constant feed inner contour
    ModalFeedRateInCurveCftcp = 7 + CommonIdentOffset // constant feed tool center point
}; 

Group 12: ModalCenterpointCorr

enum GCodeGroup_ModalCenterpointCorr
{
    ModalCenterpointCorrUndefined = 0,
    ModalCenterpointCorrOn = 8 + CommonIdentOffset, // circle centerpoint correction on
    ModalCenterpointCorrOff = 9 + CommonIdentOffset // circle centerpoint correction off
}; 

Group 13: ModalCircleCpAbsInc

enum GCodeGroup_ModalCircleCpAbsInc
{
    ModalCircleCpUndefined = 0,
    ModalCircleCpIncremental = 10 + CommonIdentOffset, // circle centerpoint incremental to start point
    ModalCircleCpAbsolute = 11 + CommonIdentOffset // circle centerpoint absolute
}; 

Group 14: ModalCollisionDetection

enum GCodeGroup_ModalCollisionDetection
{
    ModalCollisionDetectionUndefined = 0,
    ModalCollisionDetectionOn = 12 + CommonIdentOffset, //collision detection on
    ModalCollisionDetectionOff = 13 + CommonIdentOffset //collision detection off
};

Group 15: ModalRotation

enum GCodeGroup_ModalRotation
{
    ModalRotationUndefined = 0,
    ModalRotationOn = 14 + CommonIdentOffset, // rotation is turned on
    ModalRotationOff = 15 + CommonIdentOffset // rotation is turned off
}; 

Group 16: ModalCalcExRot

enum GCodeGroup_ModalCalcExRot
{
    ModalCalcExRotUndefined = 0,
    ModalCalcExRotOn = 16 + CommonIdentOffset, // extended calculation for rotation turned on
    ModalCalcExRotOff = 17 + CommonIdentOffset // extended calculation for rotation turned off
}; 

Group 17: ModalDiam

enum GCodeGroup_ModalDiam
{
    ModalDiamUndefined = 0,
    ModalDiamOn = 18 + CommonIdentOffset, // diameter programming on
    ModalDiamOff = 19 + CommonIdentOffset // diameter programming off
}; 

Group 18: ModalFeedrateIpol

enum GCodeGroup_ModalFeedrateIpol
{
    ModalFeedrateIpolUndefined = 0,
    ModalFeedrateIpolConst = 20 + CommonIdentOffset, // federate interpolation constant (default)
    ModalFeedrateIpolLinear = 21 + CommonIdentOffset // federate interpoaltion linear to remaining path
}; 

Group 19: ModalMirror

enum GCodeGroup_ModalMirror
{
    // value - (32+CommonIdentOffset) shows the bitmask for mirrored axes
    // that's why the sequence seems to be strange...
    //
    ModalMirrorUndefined = 0,
    ModalMirrorOff = 32 + CommonIdentOffset,
    ModalMirrorX = 33 + CommonIdentOffset,
    ModalMirrorY = 34 + CommonIdentOffset,
    ModalMirrorXY = 35 + CommonIdentOffset,
    ModalMirrorZ = 36 + CommonIdentOffset,
    ModalMirrorZX = 37 + CommonIdentOffset,
    ModalMirrorYZ = 38 + CommonIdentOffset,
    ModalMirrorXYZ = 39 + CommonIdentOffset
};