The feed-hold function and re-wind function
19 Aug 2012 11:10 #23390
by raychar
The feed-hold function and re-wind function was created by raychar
Hello, again,
i) In previous "external pause/resume.." program. There are "addf and2.0 servo-thread etc," can it be changed to base-thread, what will be the effect on the response time then?
ii) I also tested the feed-hold function by external button. It works. Which response time are faster when comparing it with the previous program of "pause/resume.."?
ii) I have another special function want to implement. The re-wind, that is, something like re-wind a video tape. I read through the manual and don't find it. Can it be achieved by write a program or will it be included in future...
Thanks,
i) In previous "external pause/resume.." program. There are "addf and2.0 servo-thread etc," can it be changed to base-thread, what will be the effect on the response time then?
ii) I also tested the feed-hold function by external button. It works. Which response time are faster when comparing it with the previous program of "pause/resume.."?
ii) I have another special function want to implement. The re-wind, that is, something like re-wind a video tape. I read through the manual and don't find it. Can it be achieved by write a program or will it be included in future...
Thanks,
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19 Aug 2012 11:55 #23391
by BigJohnT
Replied by BigJohnT on topic Re:The feed-hold function and re-wind function
If a component function states "requires a floating-point thread" it can not be used in the base thread. The best place to look at the components is the
online html docs
.
LinuxCNC does not rewind.
John
LinuxCNC does not rewind.
John
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19 Aug 2012 12:46 #23393
by andypugh
Replied by andypugh on topic Re:The feed-hold function and re-wind function
raychar wrote:
The servo thread runs 1000 times a second. How far does the machine move in 1mS?
MOTION runs in the servo thread, so there is no point updating the inputs to it any faster.i) In previous "external pause/resume.." program. There are "addf and2.0 servo-thread etc," can it be changed to base-thread, what will be the effect on the response time then?
The servo thread runs 1000 times a second. How far does the machine move in 1mS?
Sorry, there is no rewind in LinuxCNC. It is quite likely to appear in the next major version but I wouldn't rely on that.ii) I have another special function want to implement. The re-wind,
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