# New Machine isn't homing (EX Controller) \ **URL:** \ **Category:** General Chat\ **Created:** [September 15, 2024, 4:17pm UTC](https://forum.avidcnc.com/t/new-machine-isnt-homing-ex-controller-solved/3697 "2024-09-15T16:17:21Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![Heiko77](https://avatars.discourse-cdn.com/v4/letter/h/67e7ee/32.png) [@Heiko77](https://forum.avidcnc.com/u/Heiko77)\ **Post date:** [September 15, 2024, 4:17pm UTC](https://forum.avidcnc.com/t/new-machine-isnt-homing-ex-controller-solved/3697/1 "2024-09-15T16:17:21Z")
Hi, I just assembled my brand new AVID and it went really smoothly. I can jog all axis and everything seems to work, but homing. When I home the machine all proximity sensors are detected and it drives the machine on all Axis to a hard stop. After that I get an error message that says that one of my proximity sensors is still trigerred after a hard stop and I have to re-adjust them. When I look at the machine both Y sensors and the X Sensor is triggered and the machine is still at the hard stop position. On Z the sensor is not triggered and the machine is 10mm lower than the hard stop position. I readjusted all sensors in both directions but no change… Any Ideas? Heiko ---
**Author:** ![Heiko77](https://avatars.discourse-cdn.com/v4/letter/h/67e7ee/32.png) [@Heiko77](https://forum.avidcnc.com/u/Heiko77)\ **Post date:** [September 15, 2024, 4:59pm UTC](https://forum.avidcnc.com/t/new-machine-isnt-homing-ex-controller-solved/3697/2 "2024-09-15T16:59:08Z")
I found it - it is a bug in the servo.hom file for metric users. A line like > IF #4006 EQ 21 THEN #110 = [#110 \* 25.4] ;backoff distance for metric is missing. So for metric users the backoff distance remains a fracture of a mm instead of 1/3 inch. Works for me now, but needs to be fixed in the generator. Heiko ---
**Author:** ![Eric](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.avidcnc.com/eric/32/3220_2.png) [@Eric](https://forum.avidcnc.com/u/Eric)\ **Post date:** [September 15, 2024, 10:39pm UTC](https://forum.avidcnc.com/t/new-machine-isnt-homing-ex-controller-solved/3697/3 "2024-09-15T22:39:23Z")
Great catch! I’ll look into it and make sure it’s corrected ---
**Author:** ![LucasPe](https://avatars.discourse-cdn.com/v4/letter/l/3be4f8/32.png) [@LucasPe](https://forum.avidcnc.com/u/LucasPe)\ **Post date:** [September 17, 2024, 3:32am UTC](https://forum.avidcnc.com/t/new-machine-isnt-homing-ex-controller-solved/3697/4 "2024-09-17T03:32:27Z")
Hi Heiko, i have a question about the ex controller bundle, did you get yours as an upgrade or with a new machine? If you got it as an upgrade, did avid send you new rack and pinion mount plates or did the existing plates work with the servos? Lucas ---
**Author:** ![Heiko77](https://avatars.discourse-cdn.com/v4/letter/h/67e7ee/32.png) [@Heiko77](https://forum.avidcnc.com/u/Heiko77)\ **Post date:** [September 17, 2024, 3:47am UTC](https://forum.avidcnc.com/t/new-machine-isnt-homing-ex-controller-solved/3697/5 "2024-09-17T03:47:55Z")
Hi Lucas. It is a brand new machine. Heiko ---
**Author:** ![Johnkay](https://avatars.discourse-cdn.com/v4/letter/j/c37758/32.png) [@Johnkay](https://forum.avidcnc.com/u/Johnkay)\ **Post date:** [September 17, 2024, 11:35am UTC](https://forum.avidcnc.com/t/new-machine-isnt-homing-ex-controller-solved/3697/6 "2024-09-17T11:35:42Z")
I just took delivery of the upgrade version. You reuse the mount plates. The only new piece of hardware replaced is the motor pulley, the rest is swapped over. ---
**Author:** ![LucasPe](https://avatars.discourse-cdn.com/v4/letter/l/3be4f8/32.png) [@LucasPe](https://forum.avidcnc.com/u/LucasPe)\ **Post date:** [September 17, 2024, 1:19pm UTC](https://forum.avidcnc.com/t/new-machine-isnt-homing-ex-controller-solved/3697/7 "2024-09-17T13:19:42Z")
Yeh, i got the same, i was just wondering because my invoice says rack and pinion upgrade kit. But nothing on the rack and pinion gets changed other than the pully which was a seperate line item. ---
**Author:** ![lamoreux](https://avatars.discourse-cdn.com/v4/letter/l/e495f1/32.png) [@lamoreux](https://forum.avidcnc.com/u/lamoreux)\ **Post date:** [October 22, 2024, 8:55pm UTC](https://forum.avidcnc.com/t/new-machine-isnt-homing-ex-controller-solved/3697/8 "2024-10-22T20:55:24Z")
I am receiving this error now as well with the ex controller. Is there an update that I need to do to fix this or do I need to manually update the servo.hom file manually? ---
**Author:** ![Heiko77](https://avatars.discourse-cdn.com/v4/letter/h/67e7ee/32.png) [@Heiko77](https://forum.avidcnc.com/u/Heiko77)\ **Post date:** [October 23, 2024, 3:14am UTC](https://forum.avidcnc.com/t/new-machine-isnt-homing-ex-controller-solved/3697/9 "2024-10-23T03:14:51Z")
Are you using metric coordinates? ---
**Author:** ![lamoreux](https://avatars.discourse-cdn.com/v4/letter/l/e495f1/32.png) [@lamoreux](https://forum.avidcnc.com/u/lamoreux)\ **Post date:** [October 23, 2024, 3:24pm UTC](https://forum.avidcnc.com/t/new-machine-isnt-homing-ex-controller-solved/3697/10 "2024-10-23T15:24:34Z")
I was using metric and this issue comes up. If I switch to inches, it no longer happens. The problem seems to be whne using metric specifically. ---
**Author:** ![Eric](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.avidcnc.com/eric/32/3220_2.png) [@Eric](https://forum.avidcnc.com/u/Eric)\ **Post date:** [October 23, 2024, 5:17pm UTC](https://forum.avidcnc.com/t/new-machine-isnt-homing-ex-controller-solved/3697/11 "2024-10-23T17:17:05Z")
We have a fix for metric going up in a day or so. If you need it earlier message me here and I can set you up. ---
**Author:** ![lamoreux](https://avatars.discourse-cdn.com/v4/letter/l/e495f1/32.png) [@lamoreux](https://forum.avidcnc.com/u/lamoreux)\ **Post date:** [October 23, 2024, 5:28pm UTC](https://forum.avidcnc.com/t/new-machine-isnt-homing-ex-controller-solved/3697/12 "2024-10-23T17:28:21Z")
I think I will be good running in inches until you are able to get the fix up in a couple of days. Thanks, @Eric