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Question about stepgen type 1
26 Nov 2014 18:22 - 26 Nov 2014 18:23 #53432
by color
Question about stepgen type 1 was created by color
Hello everybody,
I am not shure is this a right place for my question, so if not please excuse me. I have a stepper driver wich can accept both signals - steps\dir and cw\ccw. I used stepconfig to tune my motors and to create the initial configuration. Now I want to run my drivers with CW\CCW signals instead step\dir. I know it must be set stepgen to type1 in HAL file and change pins from step\dir to up\down. Can i use all other settings created from stepconfig wizard and is this any other to change in my settings?
I am not shure is this a right place for my question, so if not please excuse me. I have a stepper driver wich can accept both signals - steps\dir and cw\ccw. I used stepconfig to tune my motors and to create the initial configuration. Now I want to run my drivers with CW\CCW signals instead step\dir. I know it must be set stepgen to type1 in HAL file and change pins from step\dir to up\down. Can i use all other settings created from stepconfig wizard and is this any other to change in my settings?
Last edit: 26 Nov 2014 18:23 by color. Reason: edit
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27 Nov 2014 00:54 #53459
by BigJohnT
Replied by BigJohnT on topic Question about stepgen type 1
You would have to see what pins change and adapt your hal file to fit the changes.
To see what the pins are in a terminal:
JT
To see what the pins are in a terminal:
halrun
loadrt stepgen step_type=0,1
show pin
quit
JT
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27 Nov 2014 01:05 - 27 Nov 2014 01:07 #53460
by ArcEye
Replied by ArcEye on topic Question about stepgen type 1
Hi
Because you can, or is there some other reason?
I have never done it myself but from the man page these should get you going
www.linuxcnc.org/docs/devel/html/man/man9/stepgen.9.html
You need to edit by hand
loadrt stepgen step_type=1,1,1 (assuming 3 axes)
For each axis
net xup => parport.0.pin-02-out
setp parport.0.pin-02-out-reset 1
net xdown => parport.0.pin-03-out
(setp parport.0.pin-03-out-reset 1 ....also possibly? )
setp stepgen.0.position-scale [AXIS_0]SCALE
setp stepgen.0.steplen 1
setp stepgen.0.stepspace 0
setp stepgen.0.dirhold 15100
setp stepgen.0.dirsetup 35000
setp stepgen.0.dirdelay 35000
setp stepgen.0.maxaccel [AXIS_0]STEPGEN_MAXACCEL
net xpos-cmd axis.0.motor-pos-cmd => stepgen.0.position-cmd
net xpos-fb stepgen.0.position-fb => axis.0.motor-pos-fb
net xstep <= stepgen.0.step
net xdir <= stepgen.0.dir
net xup <= stepgen.0.up
net xdown <= stepgen.0.down
net xenable axis.0.amp-enable-out => stepgen.0.enable
regards
Now I want to run my drivers with CW\CCW signals instead step\dir.
Because you can, or is there some other reason?
Can i use all other settings created from stepconfig wizard and is this any other to change in my settings?
I have never done it myself but from the man page these should get you going
www.linuxcnc.org/docs/devel/html/man/man9/stepgen.9.html
You need to edit by hand
loadrt stepgen step_type=1,1,1 (assuming 3 axes)
For each axis
net xup => parport.0.pin-02-out
setp parport.0.pin-02-out-reset 1
net xdown => parport.0.pin-03-out
(setp parport.0.pin-03-out-reset 1 ....also possibly? )
setp stepgen.0.position-scale [AXIS_0]SCALE
setp stepgen.0.steplen 1
setp stepgen.0.stepspace 0
setp stepgen.0.dirdelay 35000
setp stepgen.0.maxaccel [AXIS_0]STEPGEN_MAXACCEL
net xpos-cmd axis.0.motor-pos-cmd => stepgen.0.position-cmd
net xpos-fb stepgen.0.position-fb => axis.0.motor-pos-fb
net xup <= stepgen.0.up
net xdown <= stepgen.0.down
net xenable axis.0.amp-enable-out => stepgen.0.enable
regards
Last edit: 27 Nov 2014 01:07 by ArcEye.
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27 Nov 2014 01:55 - 27 Nov 2014 01:58 #53461
by color
Replied by color on topic Question about stepgen type 1
Thank you for the answers. I have a desktop CNC mill witn 4 Vexta stepper drivers and motors, 5 phase. These are oldy but goldy, and actualy they have only CW/CCW inputs. I run this system using Mach3 and I have done a simple logic circuit to convert CW/CCW to Step/Dir. In fact this system is working allready 3 years without any problems, but I want to try LinuxCNC. In addition, this is a possibility to eliminate this aditional logical circuit (I do not know if this will have some positive effect) I am not a linux user, but there are a huge amount of helpful information and smart people in this community wich gave me impulse to go ahead. Thanks again, I wil do tests and will ask again
![B) B)](/media/kunena/emoticons/cool.png)
Last edit: 27 Nov 2014 01:58 by color. Reason: spelling
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