[Semus]

Hey guys, I'm having a weird problem.

I don't know if this is a g-code issue, or a Mach3 issue.

Whenever my operations begin, Mach3 moves my tool down a bit, then stops for about 2-3 seconds, then moves to the first cutting location. This is fine, but I'm wondering why the machine stops for 2-3 seconds. When this happens, it looks as if it's trying to start my spindle (spindle CW(F5) flashing) for about 2-3 seconds, then the machine goes on about it's business.

I have checked in the settings and did just about everything I can think of to disable the spindle control, but the machine still hesitates for 2-3 seconds. Is this a g-code problem or am I not checking some box properly within Mach3?

I was also having an issue where it would try to change tools before starting the operation, but I fixed that by disabling M6 during the post process through Fusion 360 (which I use to create my g-code).

Any ideas?

[ger21]

Config >Ports and Pins > Spindle > Spindle delays maybe?

[Semus]

Config >Ports and Pins > Spindle > Spindle delays maybe?

At the moment, they're all set to 1 second. The first value was set to 5 seconds, but I changed it to 1. Should I try different values?

[CitizenOfDreams]

If the delay value is set to 1, Mach3 will wait for 1 second after the "spindle on" command, even if the spindle is disabled elsewhere in the config. To eliminate the delay, you need to enter 0 (who would have guessed?).

[ger21]

Can you post some of your g-code?
Does it have a G4 in it?

[Semus]

Here is the first bit of g-code from one of my ops.

(PROFILES)
(T1  D=0.1875 CR=0. - ZMIN=-0.21 - FLAT END MILL)
G90 G94 G91.1 G40 G49 G17
G20
G28 G91 Z0.
G90

(PROFILES)
M5
M9
T1
S24000 M3
G54
M9
G0 X22.5132 Y-9.6716
G43 Z0.8 H1
Z0.21
G1 Z0.0494 F55.
Z0.02
X16.9616 Y-8.8102 Z0.0093
G2 X16.8543 Y-8.7557 Z0.0091 R0.1937
G1 X16.1996 Y-8.101 Z0.0074
G2 X16.1428 Y-7.964 Z0.0071 R0.1937
G1 Y-7.2554 Z0.0057
G2 X16.2366 Y-7.1617 Z0.0054 R0.0937
G1 X26.2366 Z-0.0135
G2 X26.3096 Y-7.1967 Z-0.0137 R0.0937
X26.3303 Y-7.2554 Z-0.0138 R0.0937
G1 Y-12.4054 Z-0.0236
G2 X26.1366 Y-12.5992 Z-0.0241 R0.1938
G1 X23.8109 Z-0.0285
G2 X23.6254 Y-12.4612 Z-0.029 R0.1937
G1 X22.8011 Y-9.7198 Z-0.0344
G3 X22.7961 Y-9.7155 Z-0.0345 R0.0062
G1 X16.9616 Y-8.8102 Z-0.0457
G2 X16.8543 Y-8.7557 Z-0.0459 R0.1937
G1 X16.1996 Y-8.101 Z-0.0476
G2 X16.1428 Y-7.964 Z-0.0479 R0.1937
G1 Y-7.2554 Z-0.0493
G2 X16.2366 Y-7.1617 Z-0.0496 R0.0937
G1 X26.2366 Z-0.0685
G2 X26.3096 Y-7.1967 Z-0.0687 R0.0937
X26.3303 Y-7.2554 Z-0.0688 R0.0937
G1 Y-12.4054 Z-0.0786
G2 X26.1366 Y-12.5992 Z-0.0791 R0.1938
G1 X23.8109 Z-0.0835
G2 X23.6254 Y-12.4612 Z-0.084 R0.1937
G1 X22.8011 Y-9.7198 Z-0.0894
G3 X22.7961 Y-9.7155 Z-0.0895 R0.0062
G1 X16.9616 Y-8.8102 Z-0.1007
G2 X16.8543 Y-8.7557 Z-0.1009 R0.1937
G1 X16.1996 Y-8.101 Z-0.1026
G2 X16.1428 Y-7.964 Z-0.1029 R0.1937
G1 Y-7.2554 Z-0.1043
G2 X16.2366 Y-7.1617 Z-0.1046 R0.0937
G1 X26.2366 Z-0.1235
G2 X26.3096 Y-7.1967 Z-0.1237 R0.0937
X26.3303 Y-7.2554 Z-0.1238 R0.0937
G1 Y-12.4054 Z-0.1336
G2 X26.1366 Y-12.5992 Z-0.1341 R0.1938
G1 X23.8109 Z-0.1385
G2 X23.6254 Y-12.4612 Z-0.139 R0.1937
G1 X22.8011 Y-9.7198 Z-0.1444
G3 X22.7961 Y-9.7155 Z-0.1445 R0.0062
G1 X16.9616 Y-8.8102 Z-0.1557
G2 X16.8543 Y-8.7557 Z-0.1559 R0.1937
G1 X16.1996 Y-8.101 Z-0.1576
G2 X16.1428 Y-7.964 Z-0.1579 R0.1937
G1 Y-7.2554 Z-0.1593
G2 X16.2366 Y-7.1617 Z-0.1596 R0.0937
G1 X26.2366 Z-0.1785
G2 X26.3096 Y-7.1967 Z-0.1787 R0.0937
X26.3303 Y-7.2554 Z-0.1788 R0.0937
G1 Y-12.4054 Z-0.1886
G2 X26.1366 Y-12.5992 Z-0.1891 R0.1938
G1 X23.8109 Z-0.1935
G2 X23.6254 Y-12.4612 Z-0.194 R0.1937
G1 X22.8011 Y-9.7198 Z-0.1994
G3 X22.7961 Y-9.7155 Z-0.1995 R0.0062
G1 X17.3019 Y-8.863 Z-0.21
X16.9616 Y-8.8102
G2 X16.8543 Y-8.7557 R0.1937
G1 X16.1996 Y-8.101
G2 X16.1428 Y-7.964 R0.1937
G1 Y-7.2554
G2 X16.2366 Y-7.1617 R0.0937
G1 X26.2366
G2 X26.3303 Y-7.2554 R0.0937
G1 Y-12.4054
G2 X26.1366 Y-12.5992 R0.1938
G1 X23.8109
G2 X23.6254 Y-12.4612 R0.1937
G1 X22.8011 Y-9.7198
G3 X22.7961 Y-9.7155 R0.0062
G1 X17.3019 Y-8.863
G0 Z0.4
X13.9414 Y-7.1692
Z0.21

[CitizenOfDreams]

This is where your 2-second delay comes from:

M5 - 1-second spindle off delay
M9
T1
S24000 M3 - 1-second spindle on delay

Set both delays to 0 in Mach3 config if you don't need them (I presume you turn the spindle on manually?).
Also, why do you even need M5 there?

[Semus]

This is where your 2-second delay comes from:

M5 - 1-second spindle off delay
M9
T1
S24000 M3 - 1-second spindle on delay

Set both delays to 0 in Mach3 config if you don't need them (I presume you turn the spindle on manually?).
Also, why do you even need M5 there?

Thanks, I'll do that.

I use Fusion 360 to create all my g-code, so Fusion is putting that in there. There may be a setting in the post process or CAM setup within Fusion that I need to check or uncheck.