# Problems with calibration
**URL:** https://forums.maslowcnc.com/t/problems-with-calibration/3644
**Category:** Ground Control
**Created:** [April 28, 2018, 12:11pm UTC](https://forums.maslowcnc.com/t/problems-with-calibration/3644 "2018-04-28T12:11:59Z")
**Posts on this page:** 9
**Page:** 1
### Author:  [@ogle](https://forums.maslowcnc.com/u/ogle)
#### Post date: [April 28, 2018, 12:11pm UTC](https://forums.maslowcnc.com/t/problems-with-calibration/3644/1 "2018-04-28T12:11:59Z")
Hi guys, I am so excited to get my Maslow up and running but I cant seem to calibrate.
Hoping it is something simple?
I run through all the calibration but when I get to the page
‘Now we are going to adjust chain length’
I keep getting the error
‘the sled is not keeping up with its expected postion - make note if line number then click stop to clear alarm’
has anyone else run into this issue.
when I just run the test on the motors they all pass.
any help hugely appreciated
Kind regards
Lloyd
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### Author:  [@ogle](https://forums.maslowcnc.com/u/ogle)
#### Post date: [April 28, 2018, 12:31pm UTC](https://forums.maslowcnc.com/t/problems-with-calibration/3644/2 "2018-04-28T12:31:23Z")
Also not sure if this is relevant but it seems the left motor stalls when this error occurs
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### Author:  [@Dustcloud](https://forums.maslowcnc.com/u/Dustcloud)
#### Post date: [April 28, 2018, 1:32pm UTC](https://forums.maslowcnc.com/t/problems-with-calibration/3644/3 "2018-04-28T13:32:21Z")
Welcome to the forum!
What version of firmware and software are you using? I just upgraded to v1.12 on both, and have seen that error during the “measure motor spacing” routine (which I have done several times in the last 24 hours to try to solve some chain length issues). I am pretty new at this myself, but have not seen that error in the earlier versions I have used (v1.10 and 1.11). In my case, the machine stops when the message appears, and it is not possible to follow that instruction. After the error recurred, I exited and re-entered Ground Control, still had the problem, and then tried resetting the computer (which I think also resets the Arduino board). That helped me, but I haven’t gone as far in the cal routine as you. Hopefully later this AM I will get through the whole process. If this proves to be a recurring problem for you, I would suggest going to v1.11 for both firm and hardware, as I did not see that error there.
Hang in there, read the forum, and take a break when you feel like pushing the thing out the door!
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### Author:  [@jwolter](https://forums.maslowcnc.com/u/jwolter)
#### Post date: [April 28, 2018, 1:45pm UTC](https://forums.maslowcnc.com/t/problems-with-calibration/3644/4 "2018-04-28T13:45:28Z")
Welcome ogle!
Check out this thread: [Calibration : Adjusting the left chain left to attach the sled (second part of the calibration, attaching the sled)](https://forums.maslowcnc.com/t/calibration-adjusting-the-left-chain-left-to-attach-the-sled-second-part-of-the-calibration-attaching-the-sled/3602). It appears to be associated with a new, not-fully-tuned feature in 1.12.
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### Author:  [@ogle](https://forums.maslowcnc.com/u/ogle)
#### Post date: [April 28, 2018, 11:35pm UTC](https://forums.maslowcnc.com/t/problems-with-calibration/3644/5 "2018-04-28T23:35:20Z")
Wow thank you for the reply’s…
I have now managed to get to the test cut by increasing the alarm setting…
My next problem is getting my z-axis to work…
Any tips on this?
When I ‘define zero’ and start the test cut, the z acis raises but then when it plunges for the cut, it does not break the surface…
I have rigged up my own, and feel my adjustment may be using a too finer thread??
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### Author:  [@creigpat](https://forums.maslowcnc.com/u/creigpat)
#### Post date: [April 28, 2018, 11:49pm UTC](https://forums.maslowcnc.com/t/problems-with-calibration/3644/6 "2018-04-28T23:49:33Z")
Does the z-axis motor run without lowering the router? That has been a common problem.
You can test to see if this is the problem by applying light pressure to the back of the router when the z-axis is lowering. If that works, then you can run a bungee cord over the top of the router to apply constant pressure that helps the router down.
[Here](https://forums.maslowcnc.com/t/z-axis-bungee-to-ensure-correct-depth/481) are some examples of how others have fixed this.
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### Author:  [@ogle](https://forums.maslowcnc.com/u/ogle)
#### Post date: [April 29, 2018, 7:17am UTC](https://forums.maslowcnc.com/t/problems-with-calibration/3644/7 "2018-04-29T07:17:54Z")
Hi Craigpat,
Thanks for the reply, the router does move… and when I hit raise and lower and set the mm depth the unit moves well…
It just seems that when I set the zero… and the unit goes to cut… it raises the router first but then does not plunge to a cutting depth it seems to just plunge back to zero…
I’m thinking it’s all within the settings of ground control as the axis does move freely
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### Author:  [@dlang](https://forums.maslowcnc.com/u/dlang)
#### Post date: [April 29, 2018, 8:16am UTC](https://forums.maslowcnc.com/t/problems-with-calibration/3644/8 "2018-04-29T08:16:27Z")
let’s see the g-code you are trying to cut.
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### Author:  [@Bee](https://forums.maslowcnc.com/u/Bee)
#### Post date: [April 29, 2018, 11:40pm UTC](https://forums.maslowcnc.com/t/problems-with-calibration/3644/9 "2018-04-29T23:40:36Z")
@ogle Welcome to the group.
It might be worth noting with the Ridgid routers some people need to use a bungie cord over the top of the router to assist it in the downward direction.
Can you post a ful picture of the router/ sled/ Z axis?
Thank you