Re: [Emc-users] Spurious edge on startup

2016-09-06 Thread Jeff Epler
I suspect this is related to a problem that was discussed on the developers' list in July: https://www.mail-archive.com/search?l=mid=20160721150035.GA46232%40unpythonic.net Basically, we noticed that the charge-pump pin would be incorrectly activated "for a huge fraction of a second" during

Re: [Emc-users] Spurious edge on startup

2016-09-06 Thread Andy Pugh
> On 6 Sep 2016, at 00:39, Danny Miller wrote: > > presume the first servo-thread cycle has a glitchy value on startup, > probably the 7i92 itself. You _might_ be able to change the thread order of the edge comp. though if it is anywhere after the 7i92 read it should

Re: [Emc-users] Spurious edge on startup

2016-09-05 Thread John Kasunich
On Mon, Sep 5, 2016, at 05:39 PM, Danny Miller wrote: > I have a HAL which is detecting a false edge when loading LinuxCNC. > > I have AM882 drives which have an Alarm signal output, and an Enable > signal input. Alarm is active-low, Enable is active by default unless > LinuxCNC deasserts

[Emc-users] Spurious edge on startup

2016-09-05 Thread Danny Miller
I have a HAL which is detecting a false edge when loading LinuxCNC. I have AM882 drives which have an Alarm signal output, and an Enable signal input. Alarm is active-low, Enable is active by default unless LinuxCNC deasserts it, all goes through a 7i92 card. The Alarm signal is tied to its