Stuck configuring 5i25 to run G540
07 Jul 2020 19:54 #173903
by naja452
Replied by naja452 on topic Stuck configuring 5i25 to run G540
Ok, I changed the Serv thread period and the P values.
The step and direction signals look MUCH better, no strange behavior.
Alas, the machine still doesn't move.
The step and direction signals look MUCH better, no strange behavior.
Alas, the machine still doesn't move.
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07 Jul 2020 20:04 #173905
by tommylight
Replied by tommylight on topic Stuck configuring 5i25 to run G540
What does
mesaflash --device 5i25 --readhmid
say ?
mesaflash --device 5i25 --readhmid
say ?
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07 Jul 2020 20:12 #173906
by naja452
Replied by naja452 on topic Stuck configuring 5i25 to run G540
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07 Jul 2020 20:19 #173908
by naja452
Replied by naja452 on topic Stuck configuring 5i25 to run G540
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07 Jul 2020 20:29 #173910
by PCW
Replied by PCW on topic Stuck configuring 5i25 to run G540
It might be that the bus switch has been damaged (since you have a bad output)
and is loading its 4V power supply (that sets the pass-through voltage and is just a resistive voltage divider) so you are not getting enough high side drive to generate steps
and is loading its 4V power supply (that sets the pass-through voltage and is just a resistive voltage divider) so you are not getting enough high side drive to generate steps
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07 Jul 2020 20:31 - 07 Jul 2020 20:34 #173911
by naja452
Replied by naja452 on topic Stuck configuring 5i25 to run G540
I'm not a huge fan of that answer;) , but it's looking more and more like it might be the case ![:( :(](/media/kunena/emoticons/sad.png)
Do you know if P2 uses a different bus by chance? I ordered an adapter with the hope of reassigning everything to P2 for testing.
![:( :(](/media/kunena/emoticons/sad.png)
Do you know if P2 uses a different bus by chance? I ordered an adapter with the hope of reassigning everything to P2 for testing.
Last edit: 07 Jul 2020 20:34 by naja452.
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07 Jul 2020 20:42 #173912
by PCW
Replied by PCW on topic Stuck configuring 5i25 to run G540
Checking the loaded output voltage would probably tell
P2 uses a different bus chip but it may use the same 4V (not sure)
If the G540 only outputs 3.3V signals you could set the I/O tolerance for
3.3V and then the bus interface chips are powered by 5V
(unfortunately the G540 manual has no output signal specs)
P2 uses a different bus chip but it may use the same 4V (not sure)
If the G540 only outputs 3.3V signals you could set the I/O tolerance for
3.3V and then the bus interface chips are powered by 5V
(unfortunately the G540 manual has no output signal specs)
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07 Jul 2020 20:42 - 07 Jul 2020 20:43 #173913
by naja452
Replied by naja452 on topic Stuck configuring 5i25 to run G540
Looks like there's a PI5C PCI bus chip for each port, fingers crossed.
EDIT: you beat me to it.
EDIT: you beat me to it.
Last edit: 07 Jul 2020 20:43 by naja452.
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07 Jul 2020 20:48 #173915
by naja452
Are you able to elaborate on this? What do you mean by "set the I/O tolerance", is this HW, SW, what device is it on etc.
I guess I don't fully follow what action you're proposing.
Replied by naja452 on topic Stuck configuring 5i25 to run G540
If the G540 only outputs 3.3V signals you could set the I/O tolerance for
3.3V and then the bus interface chips are powered by 5V
(unfortunately the G540 manual has no output signal specs)
Are you able to elaborate on this? What do you mean by "set the I/O tolerance", is this HW, SW, what device is it on etc.
I guess I don't fully follow what action you're proposing.
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07 Jul 2020 20:58 - 07 Jul 2020 21:05 #173916
by naja452
Replied by naja452 on topic Stuck configuring 5i25 to run G540
Scratch that, I found the W3 jumper on the 5i25 that does what you suggested, I'll try that.
EDIT: I just checked the G540 Rev8 manual, looks like the spec sheet says input is 3.3-5v.
Fingers crossed!
EDIT: I just checked the G540 Rev8 manual, looks like the spec sheet says input is 3.3-5v.
Fingers crossed!
Last edit: 07 Jul 2020 21:05 by naja452.
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