ASD-A2 EtherCAT on LinuxCNC

Yes guys you are both right and i was wrong.
I made easy experiment.
load function or2 (three times) and connect
siggen.clock -> or2.0.in0
or2.0.out -> or2.1.in0
or2.1.out -> or2.2.in0

wrong order
addf or2.2
addf or2.1
addf or2.0
addf siggen.0.update
three cycles are needed to change the signal at the end of the chain

right order
addf siggen.0.update
addf or2.0
addf or2.1
addf or2.2
only one cycle is needed to change the signal at the end of the chain YOU CAN SEE THE TIME SEQUENCE FROM THE PICTURE
You can see the time sequence from pictures.

I apologize once again for the mystification
Martin

 

Yes, that is an very important Case.

I think this behaviour should be better descripted and point out in the Documentation.

If you are not an prof. PLC Programmer or Microcontroller Developer you will never notice this.
And in the most cases this is also not clear to Prof. IT Guys / PC Programmers, cause they all code "event" based and not familar with the processing of realtime / hardware / atomic coding ...

I would say that > 70% of all the tuning problems in this forum are related to wrong execution order. Control Loops can not work, if the basics are wrong.

jirkam wrote:

Hi
I found out that if I turn on the drivers first and only the PC after about 10 seconds, then it doesn't make the error.
Thank you.
Jirka
 

thanks jirkam arkadas
1-did you add paramhelper function manually ?
2- did you change delta drives EEPROM to change its state to OP?
3- is it posible to share all liberaries of your project ?

Hello.
I'm trying to set up an axis on my CNC machine and I can't set up the SCALE using the example files from source codes.
My lcec driver does not have pin: "srv-pos-scale" and pin  -"srv-extenc-scale".
In example file wrotes:
--ini:
SCALE = -5.0
ENC_SCALE = -0.001
--
--hal:
setp lcec.0.W.srv-pos-scale [JOINT_0]SCALE
setp lcec.0.W.srv-extenc-scale [JOINT_0]ENC_SCALE
--
I suspect my problem comes from not being able to set the scale on these pins due to their absence.
--
My CNC machine is equipped with a gearbox with u=32 and a screw with a pitch of 10mm. With a 5mm jog, the machine axis in the draw shows a shift of 5mm, but physically moves only 1.6mm.
Please tell me how to solve this problem.