Spindle Speed display backwards
18 Jan 2024 20:38 - 18 Jan 2024 21:21 #291060
by lucas-767
Spindle Speed display backwards was created by lucas-767
I'm trying to configure a lathe using Linuxcnc 2.9. Now I'm adding an encoder like the one in the attachments. I used the stepper config wizard, selected custom pyVCP GUI panel and the spindle speed display option. I tested the encoder using Hal Meter and the connection is fine. When I turn the spindle on the speed display starts to count, but with wrong values and when I increase the speed this value decrease until reach 0.
I tried some troubleshootings in hal files, but I'm really newbie in Linuxcnc.
I'm using a BOB like the one in attachments.
My VFD is the 9600 nflixin
Here is a video about the problem
I tried some troubleshootings in hal files, but I'm really newbie in Linuxcnc.
I'm using a BOB like the one in attachments.
My VFD is the 9600 nflixin
Here is a video about the problem
Last edit: 18 Jan 2024 21:21 by lucas-767.
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18 Jan 2024 22:42 #291069
by tommylight
Replied by tommylight on topic Spindle Speed display backwards
Encoder info and PPR?
Ini file?
Seems like to high count rate so the parallel port can not count the pulses at higher speeds.
Ini file?
Seems like to high count rate so the parallel port can not count the pulses at higher speeds.
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19 Jan 2024 13:02 - 19 Jan 2024 14:59 #291113
by lucas-767
Replied by lucas-767 on topic Spindle Speed display backwards
My encoder is the LPD3806-360BM-G5-24C with 360 PPR.
It's connected with a 1:2 reduction so I'm putting 720 cycles per revolution in Linuxcnc, is this right?
It's connected with a 1:2 reduction so I'm putting 720 cycles per revolution in Linuxcnc, is this right?
Last edit: 19 Jan 2024 14:59 by lucas-767.
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19 Jan 2024 15:14 #291125
by lucas-767
Replied by lucas-767 on topic Spindle Speed display backwards
You are right, Tommy it's a paraport limitation.
I tested using an optical sensor, like the one in attachments, and a disk with 4 roles and it worked.
Strange because in this video the guy uses an encoder with 200ppr and a reduction of 1:2 resulting in 400ppr. I think that worked in video because he's using linuxcnc 2.7.14 with a better latency than mine.
I tested using an optical sensor, like the one in attachments, and a disk with 4 roles and it worked.
Strange because in this video the guy uses an encoder with 200ppr and a reduction of 1:2 resulting in 400ppr. I think that worked in video because he's using linuxcnc 2.7.14 with a better latency than mine.
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19 Jan 2024 21:56 #291150
by tommylight
Replied by tommylight on topic Spindle Speed display backwards
You can try installing the RTAI kernel and see if that improves latency, see downloads page, the "LinuxCNC 2.9.2 Debian 12 Bookworm RTAI" section.
linuxcnc.org/downloads/
linuxcnc.org/downloads/
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22 Jan 2024 12:17 - 22 Jan 2024 15:21 #291339
by lucas-767
Replied by lucas-767 on topic Spindle Speed display backwards
I'm already running the RTAI kernel and my latency is 35k. I only get a good latency with 2.7.14, but in this version the G71 doesn't work.
I watched this video , the guy is runnig 2.7.0 and using the G71 but I have no clue how he managed that.
I watched this video , the guy is runnig 2.7.0 and using the G71 but I have no clue how he managed that.
Last edit: 22 Jan 2024 15:21 by lucas-767.
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