Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: Mr.Chips on March 23, 2008, 01:00:37 PM
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OK I must have touched something I should not have because it will only Jog very slowly.
Here is the history leading up to this problem the best that I remember.
I was setting my Motor Home and Soft Limits. And everything was working fine. I would tell it to go to 0,0 and it would rapid then slow and stop right on 0,0 the same for G28 (think that is the Home code) Hey this is nice and I liked the sound of the steppers when thay slowed.
I then started working on my limit switches (with soft limits turned off, no green box around icon), I would jog and it would stop when hitting the switches all at the normal jog speeds. These were beyond the Motor Home and Soft Limits but since the soft limits turned off I didn't think it would effect anything, and at the time it didn't, jog speed normal.
I then found a utility within Mach3 that woud automatically set the X+ X- and XHome (and other axis also) I would jog (speed normal) to the X+ switch then click the screen it then stepped through the other axis. to do the same for the other axis.
I think it was after this that the machine would only Jog very slowly. But I'm not exactly sure. :-[
I think it was after this that my Jog was always in the slow mode.
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Press the tab key and in the flyout windo type 100 into the slow jog DRO and press enter, it should now be back to normal. If its already at 100% then what is this "utility" you are talking about?
Hood
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Hi, Mr.Chips
On the Program Run screen is the Feedrate set to 6.0 now, That may be whats going on, Mach defaults to that speed unless you put a F### speed in Config, General Config settings Page.
Try a MDI line move G00 X2 on your MDI screen, Should move at your Velocity setting speed.
Hope this Helps, Chip
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Press the tab key and in the flyout windo type 100 into the slow jog DRO and press enter, it should now be back to normal. If its already at 100% then what is this "utility" you are talking about?
Hood
I changed it from 10 to 100 and the Jog sped is still the same at both settings.
I could not find the limit home utility again, I think it is burried somewhere in Mach3.
Have attached a shot of what I changed just in case I did not understand. Hey it happens.
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Hi, Mr.Chips
On the Program Run screen is the Feedrate set to 6.0 now, That may be whats going on, Mach defaults to that speed unless you put a F### speed in Config, General Config settings Page.
Try a MDI line move G00 X2 on your MDI screen, Should move at your Velocity setting speed.
Hope this Helps, Chip
"On the Program Run screen is the Feedrate set to 6.0 now" ? Yes it was.
"Mach defaults to that speed unless you put a F### speed in Config" I added F75 to the Initializing string and restarted Mach3.
Now the Program Run screen displays a feedrate of 75. But the jog speed is still slow, not changed.
"Try a MDI line move G00 X2 on your MDI screen" I did that and the speed is back on that command, but Jog is unchanged and slow.
On the General Logic Configuration I see you have the Motion Mode clicked on Exact Stop I have Constant Velocity. Would that have anything to do with my problem, hey I'm grasping at straws here.
Thanks Chip
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Mr.Chips
Not really const vel should be quicker.
If your still up PM your Phone # I'll give you a call.
I'll PM my # if you want to Call.
Thanks, Chip
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Mr.Chips
Not really const vel should be quicker.
If your still up PM your Phone # I'll give you a call.
I'll PM my # if you want to Call.
Thanks for the chat.
I took your advise and downloaded the latest version of Mach 3 and installed it. And my slow jog problem is gone!!!!! Hurrrray
OK on to the next issue.
No matter if I jog Y+ or Y- it always moves Y+ any ideas on that issue.
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Mr.Chips
Check the Y dir. pin for 0 & 5 volts at your stepper cont. box/board, Jog one way then the other way.
Thanks, Chip
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Chip,
Here are some pictures and details about my system.
Hager Hay
http://www.cnczone.com/gallery/useralbums.php
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Hi, Hager Hay
Got this Msg. when trying to view your Pic's, "Sorry, Personal Albums are not enabled."
Thanks, Chip
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I could not find my inline breakout board, could I unplug the cable and test the voltages directly from it?
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Mr.Chips
Check at the printer port, If it's good, Check at the Stepper Control board, If it's good there to, It's your stepper board.
If it's not good at the Stepper Control board, It would be ether your wiring or brake-out board.
Thanks, Chip
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I unplugged the parallel cable and tested X Y and Z dir. on the cable
X+ = 5.1 X- = 0
Y+ = 0 Y- =5.1
Z+ = 0 Z- =5.1
So the signal is good coming out of the parallel port and cable.
I’m not able to identify the Dir pins on either the BOB or driver cards.
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Ha Ha from the photos I posted I can see the Dir and Gnd connections of the X Y and Z. Bot don't tee any markings on the Driver boards.
I'll go out and check the BOB anyway.
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Checking voltages on BOB
X+ = 5.1 X- = 0 Moves on both directions
Y+ = 0 Y- = 0 Only moves in one direction
Z+ = 5.1 Z- =5.1 Only moves in one direction
BOB output voltages are not correct on Y and Z axis.
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Mr.Chips
Are the step/dir Low actives set the same as your X axis in Ports & pins ?
Maybe this board is wear-ed, Try changing the dir Low actives for Y, Z to opposite state
Lost your Phone # give me a call.
Thanks, Chip
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Mr.Chips
Are the step/dir Low actives set the same as your X axis in Ports & pins ?
Maybe this board is wear-ed, Try changing the dir Low actives for Y, Z to opposite state
Lost your Phone # give me a call.
Thanks, Chip
Here is a shot of the ports and pins and they are currently set.
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Here are the electrical test results, looks like my BOB might be damaged.
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Chip
I have to run an errand will be back later
Thanks
Hager
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Hi, Mr.Chips
Thy should be like this, Try using the A axis on your bob for one of the bad axises.
Thanks, Chip
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Took your advice and changed the Motor Outputs to “A” and the input signals to A also.
See screen shots below.
Moved the jumper from Z on the BOB to the A position and the other end to the Z driver.
X and Y are working normally. Z will not move + or -.
Checked the Dir voltage and both + and - were 0.
Connected the jumper from A on the BOB to the Y driver.
The Y stepper will move + and -.
Could not measure voltage cables in way.
Connected the jumper from the Y on the BOB to the Z driver.
The Z stepper will not move.
Looks like the Z driver card is not operating.
Replaced jumpers back to Y-Y and A-Z
Took the Y cable connection to stepper and put it on Z stepper. Z stepper will go + and – when going through the Y drive card.
Nothing is wrong with the Z stepper.
Could it still be Mach3?
I'll send PM with phone no.