I’m having several issues that are identical to the person that made the linked post. I am using an altmill mk2 2x4 with a G computer and g sender 1.5.4.
I am able to home my spindle, but once there I am getting (alarms 9, 10, 14).
Any guidance would be tremendously appreciated. I know this is a process and although frustrated I’m learning a lot about G sender.
@Jahuntle I’m not sure you are successfully homing your spindle. Homing involves moving each gantry until they approach the inductive sensors. That establishes the machine’s limits. It may generate those errors before homing is complete if there’s a problem with the sensors.
Copied from other thread:
I think the homing sequence is z-y-x . If it goes to the rear left corner, your z is probably ok.
Check the inductive sensors to make sure they are not set too far back (but also not too far forward). You do not want them to get hit by the gantries as they approach.
Also check that they all light up when you approach a metal object. Do them one by one. Each time, the LED at the back of the sensor should light up AND gSender should trip an alarm 14. (I just checked mine and they all do that except the right Y inductive sensor - so I’ll have to check that out. @jens do both your Y1 and Y2 light up and generate error 14 when triggered by a metal object?)).
Also check the wiring for them. When I initially set up the sensors, the LED lit up on one of them but it was still not working. Turns out one of the pins on the Z sensor was bent and not engaging in the connector. Also check the connections on the SLB.
And as mentioned before, verify all the dip switch settings.
@Jahuntle in response to the post in the other thread, when. I home, it only goes to the rear left. For you, it is going to the rear right? I don’t think it’s supposed to do that.
FWIW, another user also had errors and the wiring on the motors was incorrect. edit This is the post I was referring to: E-Stop (Alarm 10) - Community Support / 
Something’s Up - Sienci Community Forum. It doesn’t necessarily describe your issue but it does point out that you can’t rule out manufacturing issues when you troubleshoot.
@Jahuntle Did you look at the troubleshooting steps found here: Homing and Machine Limits - AltMill CNC?
Oh wow, I’ll compare that photo to mine. Thanks for sharing. I have gone through all of the troubleshooting docs I have been able to find.
I think are right correct, it is not completing the homing process. It goes to the right rear and triggers alarm 14. Both y axis sensors are lit up red. I put a metal wrench in front of the x axis and the red light comes on but I’m not getting an alarm.
I found that in the other thread, before you started this one. Isn’t the AltMill supposed to Home to the left rear corner? Maybe you misspoke but if the X sensor is on the left side of the machine it should home to the left.
If that is the case, the sensor is on the left but the homing travels to the right, it can be changed in the settings. There are toggle buttons to switch the homing direction of each axis. That could explain ALARM 9 as it’s moving away from the sensor and doesn’t find it before the max travel is exceeded.
Thanks, Michael. I made that change and unfortunately I’m still getting alarms. I think it may be related to a damaged z sensor. I have a request into sienci for replacement, I’m hoping it’s sent soon, so I can continue troubleshooting.
@Jahuntle You could swap the Y2 sensor (right-rear) with the damaged z sensor. Y2 is not used for homing.
And after you’ve done that, try this.
Thanks. The sensors now integrated into the bump stop, so I’m at least certain their placement is correct.
If I don’t hear from sienci tomorrow ill try moving the y2 sensor and see if it works.
For the Z sensor too?
No. But that one is destroyed 
.
Here are some other settings. The these are either default or in the case of the x and y max travel they are a bit short of the default figures, something that a Facebook group user suggested. Do you see anything there that looks off?
@Jahuntle Dunno. Won’t be back home until late tomorrow.
Thanks. My motors match what is shown in the picture.
Replaced the Z sensor. Still having the same issues.
When the spindle goes to the top of the z-
Let’s take it step by step. Clear the alarm and then put a metal object in front of the Z sensor. You should only get alarm 14.
Clear the alarm and press the home button in gSender. What do you get then?
Initially, when i put a piece of metal in front of the Z sensor the red light illuminates on the back of the sensor, but I don’t get any alarms. The same goes for the X sensor and both y-axis sensors.
Then I enabled the soft limit and tried and the same thing occurred. Then I enabled the hard limits and put a piece of metal in front of the Z-axis sensor and now it is throwing an alarm 1 and 14. The same goes for the x-axis sensor and Y1 sensor, but the Y2 sensor is not throwing the alarm. Interestingly it lights up red when I place a piece of metal in front of it, but it is not throwing alarms. It’s also interesting that when I attempt to home it the spindle goes to that sensor (y2) and throws a homing alarm 8. I’m wondering if I have a setting off or if the sensor is faulty.
@Jahuntle the Y2 sensor will not throw an alarm if dual y homing is disabled - which it apparently is by default. Y2 is used for squaring. The led will still light up if you put a metal object to it.
@Jahuntle When you home, it should home Z first, then go to the rear left and home on X and Y1.
Are you saying homing takes the spindle to rear-right? That should not be the case. In the homing section of gSender, what is the setting for “Homing direction invert” for X? It should be enabled to home to the left (negative). Otherwise, it will try to home to the right (positive), but there is no X sensor on the right
Yes, home takes it to the right rear. When it arrives there it bumps the right corner and then alarms (9, 10 and 14) occur.
@Jahuntle See previous post about “Homing Direction invert”. The default is enabled for X but disabled for the others.
