RRF 3 Z home not triggering.

joehsmash

@dc42 yes i thought i would clarify the title a little more. It was a quick response i only had it up for a bit!

So im pretty sure i have the motor labling correct, assuming that stock config is as follows
X0
Y1
Z2
E03
E14

I physically have my second z axis wired to e0.

As for the end stops they're all nc active low switches, i have tried to invert the inputs by using a ! Which did reverse them only that didn't make any difference to the z homing.

I suspect missing the p should solve it. Which i will try out shortly.

It would make sense that it wouldn't home z because the macro isnt being called.

joehsmash

@dc42 ok it was calling the homez.g even with out the P function on it. so that didnt solve it.

I also have the inputs inverted for the !zstop+!e0stop and it still doesnt recognise when i physically trip the endstops.

joehsmash

also may i add that the z endstops seem to be working in their inverted state,

before inversion the switches would both need to be triggered in order for the firmware to indicate that the Z was triggered. now when either of the switches is triggered the firmware indicates as such.

how ever the print head will still try and ram through the bed. and even when i try to manually trigger either of the switches it will recognize in the Firmware ( as indicated by both M119 and the machine-specific endstop read out.

joehsmash

@dc42

this is what you said in the other deleted thread

@joehsmash said in RRF3 end stop issues (new post):

M584 X0 Y1 Z2:3 E4 P3 ; Dual Z Axis
...
M574 Z1 S1 P"zstop+e0stop" ; Z axis with two motors, individual min endstops, active low

Are you sure that you have the same Z ordering in both those commands? In other words, the motor that is connected to driver output 2 uses the endstop connected to the zstop connector?

The comment on the M574 command says "active low" but you haven't inverted the pins, so they are configured as active high. Which is correct?

Your homeall.g file contains this line:

M98 "homez.g" ; Call homez.g to home custom z

It should be: M98 P"homez.g"

joehsmash

@dc42 said in RRF 3 Z home not triggering.:

Are you sure that you have the same Z ordering in both those commands? In other words, the motor that is connected to driver output 2 uses the endstop connected to the zstop connector?

i have verified this over and over, when facing my machine the left z axis is controlled by drive 2 (z motor) and the right z axis is controlled by drive 3 (E0 motor)

also the NC contacts are hooked up to the Zstop and the E0stop respectivly.

JoergS5

@joehsmash I would say the line:

G1 H2 Z-205 F1000 ; Move Z axis down until trigger

is the reason for "ramming the nozzle into the bed", because H2 means according to https://duet3d.dozuki.com/Wiki/Gcode#Section_G0_G1_Move

G1 Xnnn Ynnn Znnn H2 Ignore endstops while moving. Also ignore if axis has not been homed. On Delta and Core XY, axis letters refer to individual towers.
So, unlike in the comment, it moves independent of the trigger.

So use H1 instead of H2.

JoergS5

I don't understand the comment: "only DWC is reporting a 4th sensor that i can never get triggered.", can you make a screenshot please?

joehsmash

@JoergS5 i cannot believe it was that simple...

the confusing part is, on the docs when you read the gcode explanation (https://duet3d.dozuki.com/Wiki/Gcode#Section_G0_G1_Move)

it lists that "H2 Individual motor mode. X refers to the X motor, Y refers to the Y motor, and so on. Normally used with relative motor coordinates (see G91)"

i figured when homing a z axis with 2 motors we would want them to be controlled indiviually.

JoergS5

@joehsmash I meant the part that it ingores the endstops. Does it work now if you change to H1?

joehsmash

@JoergS5 said in RRF 3 Z home not triggering.:

I don't understand the comment: "only DWC is reporting a 4th sensor that i can never get triggered.", can you make a screenshot please?

0 is tied to my x
1 is my y
2 is either of my inverted Z axis switches
3 is in question.

would you suggest i make another post for my last issue?

im trying to make it so that when i run a g32 it will probe the bed and auto level the individual z axis

joehsmash

@JoergS5 yes, it absolutely does work now. it successfully homes now.

JoergS5

Fine, a first success!

Please don't open a new thread, but leave all points here to be discussed (and hopefully solved).

The 4th sensor could be your second Z endstop, but DWC should fuse the two Z endstops together:"Note that DWC and M119 will only show one endstop per axis, but will show the axis endstop as triggered if either switch is triggered. So you can test them by triggering one at a time." in https://duet3d.dozuki.com/Wiki/Bed_levelling_using_multiple_independent_Z_motors#Section_Axis_levelling_using_endstops

Please tell me the DWC version or update to the newest and test again. Maybe you have a version of DWC which does not fuse.

joehsmash

@JoergS5

Board: Duet WiFi 1.02 or later
Firmware: RepRapFirmware for Duet 2 WiFi/Ethernet 3.0 (2020-01-03b3)
Duet WiFi Server Version: 1.23

Note: You can install updates on the System page.

JoergS5

I don't know which version has which problems. Best would be to update to newest versions before going on. 3.0 is a bit old.

joehsmash

@JoergS5 hmm i figured it was the newest one. where can i find the absolute newest one

JoergS5

The newest RRF release is under
https://github.com/Duet3D/RepRapFirmware/releases
(as of today: 3.1.1)

joehsmash

setting up the nozzle probe according to this doesnt seem to be working.

https://duet3d.dozuki.com/Wiki/Connecting_a_Z_probe

Connect it between the STP and GND pins of the E0 connector and select mode 4. If it is a normally-closed microswitch, then with version 1.15 or earlier firmware use M574 E0 S1 to select active high trigger level. For normally-open contacts (not recommended), send M574 E0 S0 instead. With 1.16 or later firmware, include parameter I1 in the M558 command if you are using a normally-open switch.

joehsmash

so ive discovered that mode 4 is no longer supported in RRF3 and am advised to use mode 5 or 8 instead,

i have tried both and neither make a difference.

https://duet3d.dozuki.com/Wiki/Gcode#Section_M558_in_RepRapFirmware_Num_3

"Z probe types 4, 6 and 7 are no longer supported. Instead, use type 5 (filtered digital) or 8 (unfiltered digital) and use the C parameter to specify the input. Note, if your Z probe is connected to the Z endstop input, in RRF 3.0 on Duet 2 boards only (not in RRF 3.01 and later, and not in RRF 3.0 on Duet 3), that input is by default pre-assigned to be used by the Z endstop, so you must free it up first."

joehsmash

ive noticed that when i home my Z axis, i am using my 0.20mm feeler gauge to make sure that my gantry is perfectly trammed with the bed plane.

if i set my carriage to the left most position and drop it down so that the nozzle height is just touching the gauge my z height is being reported at 1.45 how ever on the right side its being reported at 0.95.

when i manually adjust the stepper to make them even and than i rehome, it goes back to exactly the same place.

how do i force either the right side or the left side to stay in line?

edit:
So i just raised the z height to +50 and dropped it back down, the left side is still touching the feeler at 1.45 how ever now the right side is touching at 0.80. it lost 0.15 over 50mm clearly there is an issue with my second z motor and its speeds perhaps

homez.g
homeall.g
config.g
bed.g

fcwilt

I'm late to the game. It appears you have two Z end stop sensors.

How are you assuring that when the sensors are triggered the bed is parallel to the gantry?

Frederick