Some advices for a noob

Hello,
I have a motor (I think multiphase because it has plenty of torque even at low speed)
and its driver

I have the input :
- start
- brake
- CW / CCW
Which are controlled by relays connected to COM

Output:
24V pulses (12 per revolution)

My questions:
- How to use the motor via the driver (I have cards with relay)? Wich module ?
- Is Linuxcnc able to automatically calculate the displacement using the driver output pulses?
- The output pulses are 24V, how to connect them to a LPT input (optocoupler, transistor)

Thank you in advance

have you details of the driver , link to manual etc

Here the driver manual.
Thank you for your time

According to the manual the motor speed can be control by the driver (always the same speed) or by voltage but linearity between voltage and speed (to low voltage = not enough torque = stopped )

Is it really the best way to convert output impulse in voltage ? Is there enough accuracy ? Why not counting the pulse (like a mouse) ?

Speed control (Linuxcnc --> motor) looks to be analog (0 to 5V)
Good PWM --> ANALOG circuits can easily have better than 0.1% linearity
(much better than the drive probably) so this should not be an issue

The SPD output pulse is open collector, so can interface directly with a parallel port, by using a pullup resistor to 5V but you may want isolation between your PC and the drive so a breakout board may be advisable.

Ok for the input i can use an pwm -> analog converter like below ?
wiki.linuxcnc.org/cgi-bin/wiki.pl?action...tal/Analog_Interface

For the SP output which module / configuration may i use ? The motor speed is below 50 tr/min

The pulse can be counted with linuxCNCs encoder component,

Note that since the SP output is just a single pulse (not quadrature),
it cannot be used for accurate position information if the gearmotor reverses
as it may possibly gain/lose counts at reversals

Ok i've done Andy's PWM to analog interface but i don't get how to connect signals.
I want to move axis X using LPT and PWMGEN

Here my files :

# INI
[EMC]
MACHINE = chariot
DEBUG = 0

[DISPLAY]
DISPLAY = axis
EDITOR = gedit
POSITION_OFFSET = RELATIVE
POSITION_FEEDBACK = ACTUAL
MAX_FEED_OVERRIDE = 1.2
INTRO_GRAPHIC = linuxcnc.gif
INTRO_TIME = 5
PROGRAM_PREFIX = /home/tereo/linuxcnc/nc_files
INCREMENTS = 5mm 1mm .5mm .1mm .05mm .01mm .005mm

[FILTER]
PROGRAM_EXTENSION = .png,.gif,.jpg Greyscale Depth Image
PROGRAM_EXTENSION = .py Python Script
png = image-to-gcode
gif = image-to-gcode
jpg = image-to-gcode
py = python

[TASK]
TASK = milltask
CYCLE_TIME = 0.010

[RS274NGC]
PARAMETER_FILE = chariot.var

[EMCMOT]
EMCMOT = motmod
COMM_TIMEOUT = 1.0
COMM_WAIT = 0.010
BASE_PERIOD = 50000
SERVO_PERIOD = 50000

[HAL]
HALFILE = chariot.hal
POSTGUI_HALFILE = custom_postgui.hal

[TRAJ]
AXES = 1
COORDINATES = X
LINEAR_UNITS = mm
ANGULAR_UNITS = degree
CYCLE_TIME = 0.010
DEFAULT_VELOCITY = 0.10
MAX_LINEAR_VELOCITY = 1.00

[EMCIO]
EMCIO = io
CYCLE_TIME = 0.100
TOOL_TABLE = tool.tbl

[AXIS_0]
TYPE = LINEAR
HOME = 0.0
MAX_VELOCITY = 100.0
MAX_ACCELERATION = 30.0
STEPGEN_MAXACCEL = 30.0
SCALE = 1.8
FERROR = 1.0
MIN_FERROR = .25
MIN_LIMIT = -0.001
MAX_LIMIT = 500.0
HOME_OFFSET = 0.0

---

and HAL file :

loadrt threads

# load parport driver
loadrt hal_parport cfg="0x378"

# connect parport to threads
# read input first
here i don't have servo_thread or base_thread only thread1
addf parport.0.read thread1 1

# write output last
addf parport.0.write thread1 -1

# connect physical pins to the signals
net Xstep => parport.0.pin-03-out
net Xdir => parport.0.pin-02-out

# create a signal for the estop loopback
#net estop-loop iocontrol.0.user-enable-out iocontrol.0.emc-enable-in



# i have a pwm and a dir
loadrt pwmgen output_type=1
addf pwmgen.update thread1
addf pwmgen.make-pulses thread1

here how i connect pwmgen.0.value ,and pwmgen.0.pwm to parport.0.pin-09.out ?

setp pwmgen.0.pwm-freq 500.0