SSI absolute encoders and analog servos
14 Nov 2016 16:36 #82795
by PCW
Replied by PCW on topic SSI absolute encoders and analog servos
what is uname -a
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14 Nov 2016 17:11 #82798
by terkaa
Replied by terkaa on topic SSI absolute encoders and analog servos
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14 Nov 2016 17:16 #82799
by PCW
Replied by PCW on topic SSI absolute encoders and analog servos
I meant what was the response to
uname -a
uname -a
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14 Nov 2016 20:39 #82810
by terkaa
Replied by terkaa on topic SSI absolute encoders and analog servos
Oh LOL same head every day...
Cinci@Cinci:~$ uname -a
Linux Cinci 3.4-9-rtai-686-pae #1 SMP PREEMPT Debian 3.4.55-4linuxcnc i686 GNU/Linux
Tero
Cinci@Cinci:~$ uname -a
Linux Cinci 3.4-9-rtai-686-pae #1 SMP PREEMPT Debian 3.4.55-4linuxcnc i686 GNU/Linux
Tero
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15 Nov 2016 00:35 - 15 Nov 2016 00:49 #82819
by PCW
Replied by PCW on topic SSI absolute encoders and analog servos
OK found the DPLL problem:
The DPLL timer value 2 is not updated until you write timer value 1
(and timer value 4 is not updated until you write timer value 3)
As a workaround, just use timer 1
or setp all the timers in order at the start
( I could not duplicate the error because I used timer 1 )
The DPLL timer value 2 is not updated until you write timer value 1
(and timer value 4 is not updated until you write timer value 3)
As a workaround, just use timer 1
or setp all the timers in order at the start
( I could not duplicate the error because I used timer 1 )
Last edit: 15 Nov 2016 00:49 by PCW.
The following user(s) said Thank You: terkaa
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15 Nov 2016 06:40 #82823
by terkaa
Replied by terkaa on topic SSI absolute encoders and analog servos
This was it. Thank you very much for help and patience with this problem.
Tero
Tero
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15 Nov 2016 16:03 - 15 Nov 2016 16:15 #82835
by PCW
Replied by PCW on topic SSI absolute encoders and analog servos
It will get fixed,
I never noticed because all of our test files either just used timer 1
or if multiple timers were used, all 4 timers were initialized, order is not even important
its just that if you never setp timer1 to some value initially you can never change timer 2
the same goes for timer 3 and 4, very weird bug
I never noticed because all of our test files either just used timer 1
or if multiple timers were used, all 4 timers were initialized, order is not even important
its just that if you never setp timer1 to some value initially you can never change timer 2
the same goes for timer 3 and 4, very weird bug
Last edit: 15 Nov 2016 16:15 by PCW.
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15 Jan 2017 20:16 #85845
by tommylight
Replied by tommylight on topic SSI absolute encoders and analog servos
Terkaa, did you mange to make the encoders work?
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16 Jan 2017 05:21 #85875
by terkaa
Replied by terkaa on topic SSI absolute encoders and analog servos
Hi,
Yes machine has been in use for few months now. Works 100% ok.
Yes machine has been in use for few months now. Works 100% ok.
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17 Jan 2017 02:07 #85885
by tommylight
Replied by tommylight on topic SSI absolute encoders and analog servos
Would you mind sharing config files, as it would save me a lot of time, and i am badly pressed for time ( it is 3:01AM here). I already have the hal and ini you shared here, but that uses simulated stuff, i just need the SSI part for reading and feedback. Never used them, but i learned a lot from this thread and other resources, so thank you very much for sharing.
Tomorrow (well today already ) i am connecting one encoder and see what happens.
I have a similar setup to yours, namely 6i25/7i77/7i74/7i70/7i71 and a revolving tool changer, and two X axis, one 6450mm long and one 400mm.
Plenty of fun!
Regards,
Tom
Tomorrow (well today already ) i am connecting one encoder and see what happens.
I have a similar setup to yours, namely 6i25/7i77/7i74/7i70/7i71 and a revolving tool changer, and two X axis, one 6450mm long and one 400mm.
Plenty of fun!
Regards,
Tom
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