Topics created by MRJEON

@mrjeon Yes, that is possible, use M558 P0.

@mrjeon Do you mean the maximum step rate? See https://forum.duet3d.com/topic/18694/duet-maximum-achievable-step-rates

Ian

Pin 3 is an example for RRF2, surely you must be using RRF3 by now and can use the pin name itself you wish to use?

@dc42 I will set the timing from 1us to 4us and respond after driving. Thank you for letting us know!

@MRJEON said in duet 2 ethernet connection not available:

Gateway: 192.168.1.255

Is that really your gateway?

Typically the gateway would be 192.168.1.1
The .255 address would be the broadcast address.

Two addresses that can't be used in your example are 192.168.123.0 and 192.168.123.255 because binary addresses with a host portion of all ones and all zeros are invalid. The zero address is invalid because it's used to specify a network without specifying a host. The 255 address (in binary notation, a host address of all ones) is used to broadcast a message to every host on a network. Just remember that the first and last address in any network or subnet can't be assigned to any individual host.

Ideally you should set the Duet to use DHCP to obtain an address from your router. Then set the router to reserve that address for the Duet to keep it static.

@MRJEON said in Axis limits:

Then, if the minimum value x 0 and the maximum value x 150, is the zero point x 75?

OK let's use the actual command M208.

Assuming all other settings are correct...

If I use M208 X0:300 Y0:300 then X=0 Y=0 should be the left-front corner and X=300 Y=300 the back-right corner AND X=150 Y=150 the center of the bed.

If I use M208 X-150:150 Y-150:150 then X=-150 Y=-150 should be the left-front corner and X=150 Y=150 the back-right corner AND X=0 Y=0 the center of the bed.

Does that help?

Frederick

In the M92 command, the Y parameter is the steps per degree of rotation of the turntable.

When you give a G1 H1 or G1 H2 command (or G1 S1/G1 S2 for older firmware versions), the Y coordinate in that command must be specified in degrees.

@MRJEON https://duet3d.dozuki.com/Wiki/Power_Wiring#Section_Main_power

use the context menu when right clicking
2145a7bb-6d4e-4722-b00e-51c10317790b-image.png

@MRJEON said in About the pause function:

If so, is it possible to pause and jog control?

What exactly do you mean by "jog control"? You can move the print head around while paused, and the original position will be restored when you resume printing. If you want to apply a permanent change in position, use the babystepping function.

@dc42 said in DUET 2 WIFI + EXPANSION BREAKOUT BOARD + AC SERVO DRIVER:

ENA+/ENA- is the Enable signal. Many external drivers (especially servo drivers) don't need it.

ok thanks.

@jay_s_uk ok thanks!!

@MRJEON said in connect problem..:

When I type the IP address

How did you get the IP address?
Can you ping that IP address?

It supports both differential drive at RS485 levels (about 3.5V) and 5V single ended drive, depending on how you connect the external drivers or servos.

@MRJEON Is this related to your other thread? https://forum.duet3d.com/topic/18671/i-have-a-question-when-wiring-the-servo-i-o-link

As explained there, Duet sends step/direction pulses. Direct from the expansion header, these are 0 to 3V at 2mA, which is usually not the correct voltage output for many external drivers. So you need a level shifter to get to the correct signal voltage. The Duet 2 Expansion Breakout Board does this, and can be configured for an output signal of -3.6V to +3.6V, or 5V.

From https://duet3d.dozuki.com/Wiki/Duet_Expansion_Breakout_Board#Section_Notes

The Duet Expansion Breakout Board uses a differential output signal of -3.6V to +3.6V. The differential outputs help the LEDs in the optocouplers in most drivers turn off faster. Also they are compatible with drivers that accept RS485 signal levels instead of 5V. Most external drivers are quite happy with the 3.6V differential signals. However, for those few drivers that really do need 5V, you can achieve this by connecting STEP+ from your driver to +5V (available on the two Servo connectors), and STEP- for your driver to STEP- on the expansion board. Similarly for DIR and ENA.

So it really depends on the signalling level your external driver expects, and that it can be set in step/direction mode rather than pulse forward/backward, which according to your other thread, your external driver can do.

Edit: For setting up the external driver, see: https://duet3d.dozuki.com/Wiki/Using_external_stepper_motor_drivers#Section_Connecting_external_stepper_drivers_with_differential_inputs
Use the T parameter of M569 in the form Taa:bb:cc:dd to set the timing for the driver: https://duet3d.dozuki.com/Wiki/Gcode?revisionid=HEAD#Section_M569_Set_motor_driver_direction_enable_polarity_and_step_pulse_timing

Ian

parameter setting.png
In the manual of MR-J4-100A, there is a parameter setting.
CW/CCW parameters and STEP/DIR parameters can be set.