Built a new Z-Axis with a new spindle, and now i get Alarm 2 when trying to probe for tool length #336

Klippert · 2023-10-05T19:26:28Z

Klippert
Oct 5, 2023

Hello,

I'm somewhat baffled here. I've got a nice CNC that's been working reliably for over 2.5 years now. Then i finally pulled myself together and made a new Z-Axis with better guides, ballscrew and so on. And its working like a charm. On the new Z-Axis i also got room for a new 2.2kw watercooled china spindle and watercooling. So far so good.
I had some issues controlling the VFD as the inputs gennerally just wants an "open" input instead of a +5v high. But i found my way around it with a little mosfet board. So VFD is working and Spindle control is working. The Z-axis behaves perfectly when jogging.

As the New Z-axis is higher than the old one, I have updated the Z-Travel to 205mm. (soft limit)
I've also had to increase the probing distance to 170mm, where 80mm was sufficient before.

Now when i probe my tool length sensor, I get this behaviour:

I home the machine
I go to probing and select all three (Probe Fixture... , Establish reference offset, Set coordinate system)
I click start, and the machine lift z to max, moves over the probe and starts the initial probing seek.
When the tool hits the probe it retracts 10mm (as i played with the latch distance to see if that made a difference)
Then i get a probing failed. as in the below screenshot:

I cant go to the GRBL tab and see the error, though by closing iosender, and then reopening it, it comes up with a message "unable to communicate, trying a soft reset, and then it shows the Alarm 2 state.

Any suggestions would be most welcome, as my logic says that there should be no changes.

Best
Kristoffer

Answered by terjeio

Oct 6, 2023

And update the sender as well since the version you do not use the latch distance for the second probe move, later versions uses the latch distance * 1.5, minimum 2mm, to avoid triggering soft limits.:

View full answer

terjeio · 2023-10-05T19:42:24Z

terjeio
Oct 5, 2023
Maintainer

Alarm 2 is soft limits triggered.
To see what is happening open the console via the File menu and check Verbose. The last 10-20 lines before the alarm may provide clues.
BTW which version of ioSender and the controller are you using?

I cant go to the GRBL tab and see the error

Is the tab greyed out or not responding on clicks?

0 replies

Klippert · 2023-10-05T22:49:14Z

Klippert
Oct 5, 2023
Author

I'll check via the file menu with Verbose. The tab is not greyed out, it's just not responding to clicks. Version of IOSender is 2.0.30 - i don't think i updated it since i got everything working about 2.5 years ago. Grbl is set up as follows: % ; grblHAL ; 1.1f.20210313 ; [OPT:VNMPZHSL+,35,1024,4,0] ; [NEWOPT:ENUMS,RT+,HOME,ES,TC,ETH] ; [FIRMWARE:grblHAL] ; [NVS STORAGE:*FLASH] ; [DRIVER:iMXRT1062] ; [DRIVER VERSION:210313] ; [DRIVER OPTIONS:USB.2] ; [BOARD:T41U5XBB] ; [IP:0.0.0.0] ; $N0= $N1= ; 0 - Step pulse time $0=10.0 ; 1 - Step idle delay $1=255 ; 2 - Step pulse invert $2=1 ; 3 - Step direction invert $3=6 ; 4 - Invert step enable pin(s) $4=7 ; 5 - Invert limit pins $5=15 ; 6 - Invert probe pin $6=0 ; 7 - Disable spindle with zero speed $7=0 ; 10 - Status report options $10=511 ; 11 - Junction deviation $11=0.010 ; 12 - Arc tolerance $12=0.002 ; 13 - Report in inches $13=0 ; 14 - Invert control pins $14=79 ; 15 - Invert coolant pins $15=0 ; 16 - Invert spindle signals $16=0 ; 17 - Pullup disable control pins $17=0 ; 18 - Pullup disable limit pins $18=0 ; 19 - Pullup disable probe pin $19=0 ; 20 - Soft limits enable $20=1 ; 21 - Hard limits enable $21=1 ; 22 - Homing cycle $22=11 ; 23 - Homing direction invert $23=3 ; 24 - Homing locate feed rate $24=25.0 ; 25 - Homing search seek rate $25=1800.0 ; 26 - Homing switch debounce delay $26=250 ; 27 - Homing switch pull-off distance $27=1.200 ; 28 - G73 Retract distance $28=0.100 ; 29 - Pulse delay $29=0.0 ; 30 - Maximum spindle speed $30=24000.000 ; 31 - Minimum spindle speed $31=0.000 ; 32 - Mode of operation $32=0 ; 33 - Spindle PWM frequency $33=5000 ; 34 - Spindle PWM off value $34=0.0 ; 35 - Spindle PWM min value $35=0.0 ; 36 - Spindle PWM max value $36=100.0 ; 37 - Steppers deenergize $37=7 ; 39 - Enable legacy RT commands $39=1 ; 40 - Limit jog commands $40=1 ; 41 - Parking cycle $41=1 ; 42 - Parking axis $42=2 ; 43 - Homing passes $43=1 ; 44 - Axes homing, first pass $44=4 ; 45 - Axes homing, second pass $45=3 ; 46 - Axes homing, third pass $46=0 ; 47 - Axes homing, fourth pass $47=0 ; 56 - Parking pull-out distance $56=5.0 ; 57 - Parking pull-out rate $57=100.0 ; 58 - Parking target $58=-5.0 ; 59 - Parking fast rate $59=1000.0 ; 60 - Restore overrides $60=0 ; 61 - Safety door options $61=0 ; 62 - Sleep enable $62=0 ; 63 - Feed hold actions $63=2 ; 64 - Force init alarm $64=0 ; 65 - Probing feed override $65=0 ; 70 - Network Services $70=3 ; 80 - Spindle P-gain $80=1.000 ; 81 - Spindle I-gain $81=0.010 ; 82 - Spindle D-gain $82=0.000 ; 84 - Spindle PID max error $84=0.000 ; 85 - Spindle PID max I error $85=10.000 ; 90 - Spindle sync P-gain $90=0.000 ; 91 - Spindle sync I-gain $91=0.000 ; 92 - Spindle sync D-gain $92=0.000 ; 95 - Spindle sync PID max I error $95=0.000 ; 100 - X-axis travel resolution $100=200.000 ; 101 - Y-axis travel resolution $101=200.000 ; 102 - Z-axis travel resolution $102=500.000 ; 103 - A-axis travel resolution $103=250.000 ; 110 - X-axis maximum rate $110=15000.000 ; 111 - Y-axis maximum rate $111=15000.000 ; 112 - Z-axis maximum rate $112=8000.000 ; 113 - A-axis maximum rate $113=500.000 ; 120 - X-axis acceleration $120=125.000 ; 121 - Y-axis acceleration $121=120.000 ; 122 - Z-axis acceleration $122=75.000 ; 123 - A-axis acceleration $123=1000.000 ; 130 - X-axis maximum travel $130=253.000 ; 131 - Y-axis maximum travel $131=522.000 ; 132 - Z-axis maximum travel $132=205.000 ; 133 - A-axis maximum travel $133=200.000 ; 300 - Hostname $300=GRBL ; 301 - IP Mode $301=1 ; 302 - IP Address $302=192.168.5.1 ; 303 - Gateway $303=192.168.5.1 ; 304 - Netmask $304=255.255.255.0 ; 305 - Telnet port $305=23 ; 307 - Websocket port $307=80 ; 341 - Tool change mode $341=2 ; 342 - Tool change probing distance $342=170.0 ; 343 - Tool change locate feed rate $343=25.0 ; 344 - Tool change search seek rate $344=350.0 ; 345 - Tool change probe pull-off rate $345=500.0 ; 347 - Dual axis length fail $347=5.0 ; 348 - Dual axis length fail min $348=2.500 ; 349 - Dual axis length fail max $349=25.000 ; 370 - Invert I/O Port inputs $370=0 ; 372 - Invert I/O Port outputs $372=0 %

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On Thu, 5 Oct 2023 at 21:42, Terje Io ***@***.***> wrote: Alarm 2 is soft limits triggered. To see what is happening open the console via the *File* menu and check *Verbose*. The last 10-20 lines before the alarm may provide clues. BTW which version of ioSender and the controller are you using? I cant go to the GRBL tab and see the error Is the tab greyed out or not responding on clicks? — Reply to this email directly, view it on GitHub <#336 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AM3JUEDPBMCCOADJ3MNSQTTX54ESZAVCNFSM6AAAAAA5UX6WQ6VHI2DSMVQWIX3LMV43SRDJONRXK43TNFXW4Q3PNVWWK3TUHM3TEMBSGQ4TA> . You are receiving this because you authored the thread.Message ID: ***@***.***>

5 replies

Klippert Oct 5, 2023
Author

This is the probing with verbose logging:

phil-barrett Oct 6, 2023
Collaborator

You really should update your firmware. The good news is the web builder makes it easy to stay current.

terjeio Oct 6, 2023
Maintainer

And update the sender as well since the version you do not use the latch distance for the second probe move, later versions uses the latch distance * 1.5, minimum 2mm, to avoid triggering soft limits.:

Answer selected by Klippert

Klippert Oct 7, 2023
Author

Hello Again,

Thanks for the suggestions.
I just increased the Z-Axis max length to 500mm and now probing works. This kills the softlimit on Z but at least I was able to run my Job. So this confirms what was wrong.

Now in an attempt to build a new firmware I went through the web interface, and of course I can't remember half the configuration from 2 years ago when I last built it :)
So it's a bit of a case of from the top.
Is there an easy-ish way of digging out my old configuration files and checking my options are the same?

terjeio Oct 7, 2023
Maintainer

It seems to be a basic build with dual axis (Y auto squared?) and safety door input enabled. From the settings dump above:

; [DRIVER:iMXRT1062]
...
; [BOARD:T41U5XBB]

Ethernet is enabled but since the IP address is not set it is not in use.

Backup before and restore after flashing the controller settings from the Settings: Grbl tab.

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Built a new Z-Axis with a new spindle, and now i get Alarm 2 when trying to probe for tool length #336

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Built a new Z-Axis with a new spindle, and now i get Alarm 2 when trying to probe for tool length #336

Klippert Oct 5, 2023

Replies: 2 comments · 5 replies

terjeio Oct 5, 2023 Maintainer

Klippert Oct 5, 2023 Author

Klippert Oct 5, 2023 Author

phil-barrett Oct 6, 2023 Collaborator

terjeio Oct 6, 2023 Maintainer

Klippert Oct 7, 2023 Author

terjeio Oct 7, 2023 Maintainer

Klippert
Oct 5, 2023

Replies: 2 comments 5 replies

terjeio
Oct 5, 2023
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Klippert
Oct 5, 2023
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Klippert Oct 5, 2023
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phil-barrett Oct 6, 2023
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terjeio Oct 6, 2023
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Klippert Oct 7, 2023
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terjeio Oct 7, 2023
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