Netmos 9865 pci parallel port help

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17 Jun 2016 11:29 #76206 by andypugh

Getting an Unexpected Realtime Delay message in axis. No motor movement.


That message is information only. It's a concern, but won't stop the machine running.

Have you taken Axis out of e-stop and turned it on? (top left pair of buttons, or F1 then F2)

If the motors turn freely when Axis in on, and there is no movement in Axis then this may well be the amp-enable signals (though the wiring diagram shows the amp-enables of the drives unconnected. The stepconf axis test does not toggle the amp-enable signals, but the final configuration produced does (but of course, this can only have any effect if the enables are wired up)

The wiring diagram suggests that the amp-enables are 5V for on (or disconnected for on), ie apply 0V to ENA- to turn off the drive.

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17 Jun 2016 12:19 #76211 by chadrat6458
I did not take Axis out of e-stop or turned it on. I will try it. Thanks.

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18 Jun 2016 03:30 #76238 by chadrat6458
taking Axis out of e-stop or turning it on worked!

Just need to tweak my settings. I have it microstep set to 8. I thinking going down to 4 for x and y. X and Y seem a little choppy. Any ideas on how to smooth them out?

Thanks!

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18 Jun 2016 10:19 #76249 by andypugh

X and Y seem a little choppy. Any ideas on how to smooth them out?


You could try lower acceleration numbers.

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18 Jun 2016 22:26 #76270 by tommylight
Make the timings longer and also the base thread.
That will smooth the drives.
Regards,
Tom

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18 Jun 2016 23:30 #76271 by andypugh

Make the timings longer and also the base thread.
That will smooth the drives.


I don't think this is true.

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19 Jun 2016 23:20 #76295 by tommylight
It actually is for chinese drives. Cheap drives use slow optocouplers that tend to be very picky for timing and also very slow to react.
The drive power set low can do that same choppy movement, but that can be checked by lowering the machine velocity.
Regards,
Tom

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19 Jun 2016 23:22 #76296 by tommylight
I am sorry Andy, i just read my post again and it says "drives", i meant motors.

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27 Jun 2016 15:24 #76710 by chadrat6458
What is a good starting point for max_acceleration and max_velocity? Thanks.

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27 Jun 2016 15:34 - 27 Jun 2016 15:38 #76712 by Todd Zuercher
That depends, how heavy are the moving parts, how powerful are the motors, gear reduction?
These are the settings I have on an old Digitaltool CNC router, 20 inches/sec^2 acceleration rate and 10 inches/sec (600ipm).
But what will work best for your machine will depend on your machine.

For the most part you will want to set the acceleration as high as you can without loosing steps even at the highest speed you will use, minus a safety margin.
Last edit: 27 Jun 2016 15:38 by Todd Zuercher.

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