|
|
Post by lostwoodworker on Feb 19, 2018 2:08:28 GMT
I just went use my homing switches and noticed my Z switch has stopped working. I’ve checked the connections and they are fine. It used to work but has stopped. Any suggestions?
|
|
|
|
Post by ahahlberg on Feb 19, 2018 5:26:39 GMT
I assume you tried using Verbose mode in UGS to see if the switch is actually being seen by the computer? There are several posts on various homing issues but Derek's suggestions have been spot on. My issue was apparently one related to the Z-axis homing switch being the longest wiring run and possibly picking up electrical noise and falsely appearing to be homed when the Z-axis was not near home. Is that the kind of issue you're having? If so, first thing is to go to Tools/options/Sender Options and set Verbose mode - then the scrolling command window will start dumping what the overall USB interface sees coming back from the machine. If you manually press up on the Z-axis switch you should see the code Pn:Z show up at the end of each line while the switch is held. If you do then the switch is working and the computer sees it - but if it doesn't then you may have a wiring problem.
There are several discussions on this topic in the forums here - search for "Z-axis homing" and you'll see stuff on broken or intermittent wires and broken capacitor leads and the issue I had with electrical noise in the environment. There's even a suggestion on Page 38 of the Carve King Assembly Manual about rewiring using shielded cable for the z-axis home switch - which seems to have solved my problem. But my switch, using the verbose mode, was always being seen by the computer - but acted like it was closed when it wasn't do to electrical noise - at least that's my best guess - but it's working now.
|
|
|
|
Post by Derek the Admin on Feb 20, 2018 13:24:25 GMT
I’d check to make sure nothing got pulled out and also look at the verbose output to see what, if anything, is registering when you manually press the switch.
|
|
|
|
Post by lostwoodworker on Feb 21, 2018 2:57:22 GMT
I went to Tools, Options but there is no Verbose option. I don’t even see that as an option. I assume you tried using Verbose mode in UGS to see if the switch is actually being seen by the computer? There are several posts on various homing issues but Derek's suggestions have been spot on. My issue was apparently one related to the Z-axis homing switch being the longest wiring run and possibly picking up electrical noise and falsely appearing to be homed when the Z-axis was not near home. Is that the kind of issue you're having? If so, first thing is to go to Tools/options/Sender Options and set Verbose mode - then the scrolling command window will start dumping what the overall USB interface sees coming back from the machine. If you manually press up on the Z-axis switch you should see the code Pn:Z show up at the end of each line while the switch is held. If you do then the switch is working and the computer sees it - but if it doesn't then you may have a wiring problem. There are several discussions on this topic in the forums here - search for "Z-axis homing" and you'll see stuff on broken or intermittent wires and broken capacitor leads and the issue I had with electrical noise in the environment. There's even a suggestion on Page 38 of the Carve King Assembly Manual about rewiring using shielded cable for the z-axis home switch - which seems to have solved my problem. But my switch, using the verbose mode, was always being seen by the computer - but acted like it was closed when it wasn't do to electrical noise - at least that's my best guess - but it's working now. |
|
|
|
Post by lostwoodworker on Feb 21, 2018 3:05:48 GMT
Ok I found verbose mode on mine. It was a little different as follows.... Tools, Options, UGS, then check “show verbose output” Box. Hit apply and it starts populating the Console window. I then held down the homing switch and it populated the Console window with Pn:Z.
|
|
|
|
Post by lostwoodworker on Feb 21, 2018 3:06:26 GMT
I’d check to make sure nothing got pulled out and also look at the verbose output to see what, if anything, is registering when you manually press the switch. See my comment above. I ran test. What do I do next? |
|
|
|
Post by Derek the Admin on Feb 21, 2018 17:34:36 GMT
Post your settings by typing $$ in the command line and hitting enter and copying and pasting here.
If it recognizes the switch hit there shouldn't be much reason homing should fail other than something like pulloff or steps/mm being off.
|
|
|
|
Post by lostwoodworker on Feb 22, 2018 5:02:38 GMT
Post your settings by typing $$ in the command line and hitting enter and copying and pasting here. If it recognizes the switch hit there shouldn't be much reason homing should fail other than something like pulloff or steps/mm being off. Thanks. I’ll get readouts copies over tomorrow. I did notice that my Z axis doesn’t seem to cut level anymore like the steps are off when creating a pocket |
|
|
|
Post by ahahlberg on Feb 22, 2018 6:05:12 GMT
I was having a Z-axis homing switch problem until I rewired the switch with shielded cable as the assembly manual suggested. Since rewiring with shielded cable the problem has not recurred. It's a minor pain in the butt to reroute a replacement cable since you have to go through both drag chains - but it hasn't failed once - knock on wood - since doing that!
I think the switch wires can act as an antenna at times and pick up stray noise that makes it appear like a short at times. But for about 75 cents worth of shielded two-conductor wire, a cheap and apparently needed suggestion covered on the last page of instructions!
And sorry about the misdirection on where the Sender Options were - I thought I might have been incomplete, but Derek's directions in other posts about how to troubleshoot it had it right all along!
|
|
|
|
Post by lostwoodworker on Feb 28, 2018 19:17:46 GMT
Post your settings by typing $$ in the command line and hitting enter and copying and pasting here. If it recognizes the switch hit there shouldn't be much reason homing should fail other than something like pulloff or steps/mm being off. Sorry for the delay. I am missing steps in my hight when cutting. It climbs and descends enough to mess my piece up. Anyways here is my settings. $0 = 10 $1 = 255 $2 = 0 $3 - $6 = 0 $10 = 1 $11 = 0.010 $12 = 0.002 $13 = 0 $20 = 0 $21 = 0 $22 = 1 $23 = 0 $24 = 35.000 $25 = 1200.000 $26 = 94 $27 = 4.000 $30 = 12000 $31 = 0 $32 = 0 $100 = 200.000 $101 = 200.000 $102 = 200.000 $110 = 5000.000 $111 = 5000.000 $112 = 1000.000 $120 = 240.000 $121 = 240.000 $122 = 240.000 $130 = 432.000 $131 = 432.000 $132 = 95.000 |
|
|
|
Post by Derek the Admin on Mar 1, 2018 2:29:49 GMT
Check it mechanically first, like the coupler being loose or v wheels or antibacklash nut being too tight.
Some of the settings you have there are different than default. The first thing to do will be to restore those defaults by type by $RST=$ in the command line.
|
|
|
|
Post by garyeb on Sept 15, 2018 21:45:51 GMT
It may just have been an anomaly with my CK machine but my Z-axis homing switch stopped working yesterday when the capacitor leads broke and the switch stopped working (vibration fatigue?). Fortunately I saw the cap lying on the bed and quickly discovered the impact when I tried to home the machine. Soldering in a replacement was an easy fix but worth checking when debugging homing problems.
|
|
