setting feed-override with step-switch

More
19 Jan 2011 20:58 #6777 by nursum
Hello, i have following problem: For my feed-override I use my original (Siemens) 16 step feed-override step-switch. I have programmed my own component to handel my digital inputs to get a value between 0 and 120 procent (0 to 1.2). I tell EMC with the "halui.feed-override.count" pin (value 0 to 1.2) which value I want. When EMC2 start the feed-override value is always set to 1 (100 procent) and the count funtion dont accept the real velocity (for example the actual value is 60 procent), so I have to put my switch up to 120 procent and then reduce it to 0. After that procedure everything works well, my feed-override is exactly the value I want. Is there a possibility to have the exakt value at the EMC2 start for the feed-override?
Thanks for answers! Ingo

Please Log in or Create an account to join the conversation.

More
20 Jan 2011 00:52 #6779 by BigJohnT
You might want to pastebin.ca your comp so we can look at it. I assume it is a binary gray code switch? I have a similar one on my Hardinge.

John

Please Log in or Create an account to join the conversation.

More
20 Jan 2011 08:31 #6781 by nursum
Hi John, yes it is a binary switch and I have made a comp that give me the right values. For example the steps 0,1,3,7,10,20,....90,100,110,120 procent output. But when EMC starts, the output is always set to 100 procent. I can't tell EMC to start with my value. For example the switch is at 60 percent and give the "halui.feed-override.counts" pin the value of 0.6 but when EMC starts the output value is set to 1 which is 100 procent . The first value is not taken by EMC, but when I reduce the switch to 0 EMC shows 40 procent feed override. Then I increase my speed override to 120 procent, which is taken by EMC. When I now reduce to 0, EMC makes all well, it shows 0 procent. It depends on the count funktionality of the halui.feed-override.counts pin. My question is: Is there a possibility to tell EMC directly the feed-override?

Ingo

Please Log in or Create an account to join the conversation.

More
20 Jan 2011 21:57 #6783 by BigJohnT
I believe halui.feedoverride-counts is for using an encoder to change the FO. So yes it will be confused until you count down to 0 and start from there. A workaround is to make sure you FO knob is on 100% when you start EMC, sucks but it will work. I did a comp a while back to use BCD from a rotary switch but can't find it atm.

John

Please Log in or Create an account to join the conversation.

More
21 Jan 2011 01:37 - 21 Jan 2011 01:44 #6785 by cmorley
nursum wrote:

My question is: Is there a possibility to tell EMC directly the feed-override?

Ingo


Not yet - in EMC 2.5 (or master now) you will be able to set the feed override directly with HALUI
by setting a flag halui.feed-override.direct-value then setting counts to the value wanted (subject to scaling)
I see the manual and the man pages don't mention it yet.

Chris M
Last edit: 21 Jan 2011 01:44 by cmorley.

Please Log in or Create an account to join the conversation.

More
21 Jan 2011 10:25 #6788 by nursum
Thanks for your answeres,
I fix it in the following way for all others which want to do the same: In a selfmade .comp file I wait two seconds until emc is ready then I switch automatically for 0.2 seconds to 120 procent then for 0.2 seconds to 0 procent and after that i give the real step of the step switch EMC! That works perfekt and the machine user can't made mistakes....

Ingo

Please Log in or Create an account to join the conversation.

More
21 Jan 2011 12:34 #6794 by BigJohnT
cmorley wrote:

I see the manual and the man pages don't mention it yet.

Chris M


Dang manual guy should be flogged... and I can't remember exactly how this pin works either.

John

Please Log in or Create an account to join the conversation.

More
22 Jan 2011 05:55 #6802 by cmorley
gee i had to look it up too. just to make sure i was right.
if one sets halui-feed-override.direct-value true
then halui-feedoverride.counts ( after being scaled by halui.feed-override.scale ) sets the feed over-ride directly .

meaning if scale is .01 and count was 100 the feed over-ride would be 100 percent.
scale = .01, count = 50 , feed over-ride = 50 percent.

I'll also mention to the doc guy that in master g10 L2 and L20 now allow P0 which means 'The currently active coordinate system'
No rest for the wicked ! :)

Please Log in or Create an account to join the conversation.

More
24 Jan 2011 14:16 #6825 by andypugh
nursum wrote:

I fix it in the following way for all others which want to do the same: In a selfmade .comp file I wait two seconds until emc is ready then I switch automatically for 0.2 seconds to 120 procent


I was going to suggest something similar, though my idea was to watch an Axis status pin rather than wait a fixed period of time.

I have a feeling that you could initially leave the over-ride pin disconnnected in HAL, and setp the halui pin to 120%, then finally connect up your comp output pin in the postgui.hal file, by which point axis is probably "watching"

Please Log in or Create an account to join the conversation.

Time to create page: 0.216 seconds
Powered by Kunena Forum