Time out on toolchange
07 Apr 2016 17:23 #72923
by emcPT
Time out on toolchange was created by emcPT
Hello,
In a tool change component when something goes wrong a time out is normally present on machines that indicates that the tool change went wrong.
How can a time out be accomplished inside a component ? For example if the tool change does not occur in 10 seconds it should enter in error.
Thank you
In a tool change component when something goes wrong a time out is normally present on machines that indicates that the tool change went wrong.
How can a time out be accomplished inside a component ? For example if the tool change does not occur in 10 seconds it should enter in error.
Thank you
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07 Apr 2016 22:10 - 07 Apr 2016 22:12 #72934
by BigJohnT
Replied by BigJohnT on topic Time out on toolchange
I do my tool change in Classicladder so timers are easy.
I think (guess) you could make a timer of some sort in a component maybe counting cycles or something. Oh take a look at the time component it tracks time.
Edit: and look at the timedelay component.
JT
I think (guess) you could make a timer of some sort in a component maybe counting cycles or something. Oh take a look at the time component it tracks time.
Edit: and look at the timedelay component.
JT
Last edit: 07 Apr 2016 22:12 by BigJohnT.
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08 Apr 2016 12:09 - 08 Apr 2016 12:09 #72954
by andypugh
You mean inside a realtime HAL component?
Typically a HAL component is written as a state machine:and so on.
To add a timeout:
Replied by andypugh on topic Time out on toolchange
How can a time out be accomplished inside a component ?
You mean inside a realtime HAL component?
Typically a HAL component is written as a state machine:
state = 0;
switch state{
case 0: // idle
if (thing) {
stuff;
state = 1
}
case 1: // begin
if (other thing){
more_stuff
state = 2
...To add a timeout:
state = 0;
switch state{
case 0: // idle
if (thing) {
stuff;
timer = 0;
state = 1
}
case 1: // begin
timer += period; // period is in nS
if (timer > 1000000) {
state = 99;
break
}
if (other thing){
more_stuff
timer = 0
state = 2
...
case 99: // Handle timeout heree
Last edit: 08 Apr 2016 12:09 by andypugh.
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08 Apr 2016 16:17 #72968
by emcPT
Replied by emcPT on topic Time out on toolchange
Yes, we implemented like a delay (that we were using in another machines) and quite similar to your implementation and it works fine.
About the classicladder I never tested as we are able to do almost anything with components.
About the classicladder I never tested as we are able to do almost anything with components.
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