G3 command make arc + 1 full revolution and wrong direction

[cncgoko]

Hello,

Firmware build : 440.18 Issuing a G3 command on the G18 plane move TinyG 1 full revolution + the expected arc move. My guess is that it turns in the wrong direction (In G18 plane, both G2 and G3 turns in the same direction). On G17 and G19 they work properly (G2 works properly in all planes).

	G2	G3
G17	OK	OK
G18	OK	BUG
G19	OK	OK

For instance :

g0 x0 y0 z0
g17 g3 y20 j10   // works properly

g0 x0 y0 z0
g19 g3 z20 k10   // works properly

g0 x0 y0 z0
g18 g3 z20 k10   // bug

Below is an extract of the communication from TinyG. We can see that X position and Z position loop.

G0 X32.5 Y11.625 Z20.
    {"r":{"gc":"G0X32.5Y11.625Z20."},"f":[1,0,22,566]}
    {"sr":{"posx":-51.032,"posy":11.625,"posz":15.000,"posa":0.000,"feed":500.00,"vel":15.64,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"qr":31,"qi":1,"qo":0}
    {"sr":{"posx":32.500,"posy":11.625,"posz":20.000,"posa":0.000,"feed":500.00,"vel":0.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":3}}
    {"qr":32,"qi":0,"qo":1}
G18 G3 X27.5 Z15. I-5. K0. F500.
    {"r":{"gc":"G18G3X27.5Z15.I-5.K0.F500."},"f":[1,0,33,7997]}
    {"sr":{"posx":27.500,"posy":11.625,"posz":15.000,"posa":0.000,"feed":500.00,"vel":0.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":3}}
    {"sr":{"posx":32.498,"posy":11.625,"posz":19.966,"posa":0.000,"feed":500.00,"vel":64.45,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":32.484,"posy":11.625,"posz":19.754,"posa":0.000,"feed":500.00,"vel":168.62,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":32.467,"posy":11.625,"posz":19.486,"posa":0.000,"feed":500.00,"vel":138.04,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":32.460,"posy":11.625,"posz":19.371,"posa":0.000,"feed":500.00,"vel":14.85,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"qr":4,"qi":29,"qo":1}
    {"sr":{"posx":32.459,"posy":11.625,"posz":19.366,"posa":0.000,"feed":500.00,"vel":10.18,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":32.439,"posy":11.625,"posz":19.260,"posa":0.000,"feed":500.00,"vel":141.19,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":32.370,"posy":11.625,"posz":18.901,"posa":0.000,"feed":500.00,"vel":267.92,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"qr":3,"qi":2,"qo":1}
    {"sr":{"posx":32.219,"posy":11.625,"posz":18.376,"posa":0.000,"feed":500.00,"vel":491.95,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":31.889,"posy":11.625,"posz":17.609,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"qr":4,"qi":2,"qo":3}
    {"sr":{"posx":31.454,"posy":11.625,"posz":16.950,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":30.892,"posy":11.625,"posz":16.340,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":30.274,"posy":11.625,"posz":15.849,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"qr":4,"qi":3,"qo":3}
    {"sr":{"posx":29.551,"posy":11.625,"posz":15.442,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":28.766,"posy":11.625,"posz":15.173,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"qr":4,"qi":3,"qo":3}
    {"sr":{"posx":27.989,"posy":11.625,"posz":15.033,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":27.160,"posy":11.625,"posz":15.014,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"qr":4,"qi":3,"qo":3}
    {"sr":{"posx":26.341,"posy":11.625,"posz":15.144,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":25.590,"posy":11.625,"posz":15.390,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":24.852,"posy":11.625,"posz":15.766,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"qr":4,"qi":3,"qo":3}
    {"sr":{"posx":24.186,"posy":11.625,"posz":16.261,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":23.642,"posy":11.625,"posz":16.834,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"qr":4,"qi":3,"qo":3}
    {"sr":{"posx":23.171,"posy":11.625,"posz":17.516,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":22.811,"posy":11.625,"posz":18.263,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"qr":4,"qi":3,"qo":3}
    {"sr":{"posx":22.603,"posy":11.625,"posz":19.026,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":22.512,"posy":11.625,"posz":19.850,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":22.547,"posy":11.625,"posz":20.639,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"qr":4,"qi":3,"qo":3}
    {"sr":{"posx":22.719,"posy":11.625,"posz":21.450,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":23.030,"posy":11.625,"posz":22.219,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"qr":4,"qi":3,"qo":3}
    {"sr":{"posx":23.435,"posy":11.625,"posz":22.897,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":23.964,"posy":11.625,"posz":23.536,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"qr":4,"qi":3,"qo":3}
    {"sr":{"posx":24.603,"posy":11.625,"posz":24.065,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":25.281,"posy":11.625,"posz":24.470,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":26.050,"posy":11.625,"posz":24.781,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"qr":5,"qi":2,"qo":3}
    {"sr":{"posx":26.861,"posy":11.625,"posz":24.953,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":27.650,"posy":11.625,"posz":24.988,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"qr":8,"qi":0,"qo":3}
    {"sr":{"posx":28.474,"posy":11.625,"posz":24.897,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":29.273,"posy":11.625,"posz":24.673,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"qr":11,"qi":0,"qo":3}
    {"sr":{"posx":29.984,"posy":11.625,"posz":24.329,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":30.666,"posy":11.625,"posz":23.858,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":31.239,"posy":11.625,"posz":23.314,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"qr":14,"qi":0,"qo":3}
    {"sr":{"posx":31.734,"posy":11.625,"posz":22.648,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":32.110,"posy":11.625,"posz":21.910,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"qr":17,"qi":0,"qo":3}
    {"sr":{"posx":32.356,"posy":11.625,"posz":21.159,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":32.486,"posy":11.625,"posz":20.340,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"qr":20,"qi":0,"qo":3}
    {"sr":{"posx":32.467,"posy":11.625,"posz":19.511,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":32.327,"posy":11.625,"posz":18.734,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":32.058,"posy":11.625,"posz":17.949,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"qr":23,"qi":0,"qo":3}
    {"sr":{"posx":31.651,"posy":11.625,"posz":17.226,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":31.160,"posy":11.625,"posz":16.608,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"qr":26,"qi":0,"qo":3}
    {"sr":{"posx":30.550,"posy":11.625,"posz":16.046,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":29.891,"posy":11.625,"posz":15.594,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"qr":29,"qi":0,"qo":3}
    {"sr":{"posx":29.129,"posy":11.625,"posz":15.283,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":28.326,"posy":11.625,"posz":15.077,"posa":0.000,"feed":500.00,"vel":500.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":27.549,"posy":11.625,"posz":15.003,"posa":0.000,"feed":500.00,"vel":410.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":5}}
    {"sr":{"posx":27.500,"posy":11.625,"posz":15.000,"posa":0.000,"feed":500.00,"vel":0.00,"unit":1,"coor":1,"dist":0,"frmo":1,"stat":3}}
    {"qr":32,"qi":0,"qo":3}

[cncgoko]

Any update on this issue ?