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  • PCW
  • PCW's Avatar
02 Nov 2025 13:40
Replied by PCW on topic MESA 7i76eu – I/O - Spannungsversorgung

MESA 7i76eu – I/O - Spannungsversorgung

Category: Deutsch

The drive manual shows that the alarm output is an optocoupler
This can connect directly to the 7I76UE field inputs


+24V --> ALM+
ALM- --> 7I76EU field input

 
  • tommylight
  • tommylight's Avatar
02 Nov 2025 13:32
Replied by tommylight on topic MESA 7i76eu – I/O - Spannungsversorgung

MESA 7i76eu – I/O - Spannungsversorgung

Category: Deutsch

Mesa 7i76 should have 4 analog inputs (do check if EU has) that you can use for amplifier fault at 5V, but it will require some HAL editing.
Should be field inputs 0-3
  • 2tinker
  • 2tinker
02 Nov 2025 13:02
Replied by 2tinker on topic MESA 7i76eu – I/O - Spannungsversorgung

MESA 7i76eu – I/O - Spannungsversorgung

Category: Deutsch

Meinst du ein mechanisches Relay?
  • Plasmanfm
  • Plasmanfm
02 Nov 2025 09:15 - 02 Nov 2025 09:24
Replied by Plasmanfm on topic MESA 7i76eu – I/O - Spannungsversorgung

MESA 7i76eu – I/O - Spannungsversorgung

Category: Deutsch

Wenn das Alarmsignal des Steppmotors nur 5 V liefert dann schalte doch mit dieser ein Relais das die 12 V Ein und Ausschaltet
und lege die 12 V auf den PIN

Juergen
  • 2tinker
  • 2tinker
02 Nov 2025 07:29
Replied by 2tinker on topic MESA 7i76eu – I/O - Spannungsversorgung

MESA 7i76eu – I/O - Spannungsversorgung

Category: Deutsch

Ich habe das Support Manual.

"The 7I76EU field inputs have a nominal input resistance of 10K Ohms to field power ground. 7I76EU inputs sense positive input voltages above a preset threshold. For best general purpose use, default input threshold is 50% of the field power supply voltage with 10% hysteresis. That is with a 24V field voltage an input must be brought to 60% of 24V= 14.4V to be sensed as high and then brought to 40% of 24V = 9.6V to be sensed as low.These accurate thresholds and hysteresis allow high speed field signal detection whilemaintaining excellent noise immunity."

So wie ich das verstehe müssten bei 12V mindestens 7,2V anliegen um ein "High"-Signal zu erhalten.
Damit komme ich ohne eine kleine Verstärkerschaltung nicht weiter.
Richtig?

Als Schrittmotor möchte ich gerne diese verwenden...
www.omc-stepperonline.com/ess-series-2-2...vdc-1000cpr-ess23-20
  • PCW
  • PCW's Avatar
01 Nov 2025 17:40
Replied by PCW on topic MESA 7i76eu – I/O - Spannungsversorgung

MESA 7i76eu – I/O - Spannungsversorgung

Category: Deutsch

Do you have the drive manual?

Is this a 5V push-pull output?

 
  • 2tinker
  • 2tinker
01 Nov 2025 16:53
MESA 7i76eu – I/O - Spannungsversorgung was created by 2tinker

MESA 7i76eu – I/O - Spannungsversorgung

Category: Deutsch

Dank Hilfe aus diesem Forum bin ich jetzt ein Stückchen weiter.
Den I/O-Bereich meine 7i76eu (TB1) habe ich an einen 12V Ausgang meines ATX-Netzteiles angeschlossen. Ebenso den P4 (mit 5V).
Die Näherungssensoren für „Home“ liefern entsprechend ein verwertbares „True“ auf der Karte.
Ein SSR, dass das 48V-Netzteil für die Schrittmotoren einschaltet funktioniert auch.
(Netter Nebeneffekt ist, das ich mir das Enabled der Motoren sparen kann)
Jetzt stehe ich vor der Frage, wie ich das Alarmsignal der geplanten Closed-Loop-Schrittmotoren (die ja nur 5V liefern) in die Software bringe.
Die „Input’s“ der Karte scheinen nur auf die 12V zu reagieren.

=11.0ptMuss ich da einen Transistor zwischenschalten, der mir aus den 5V ein 12V Signal macht?
=11.0ptWenn ja, was sollte ich da am besten nehmen (Transistor/Schaltung)=11.0ptOder gibt es noch eine andere Möglichkeit?

Grüße, 2tinker
  • PCW
  • PCW's Avatar
01 Nov 2025 03:41
Replied by PCW on topic optimising the computer for linuxCNC

optimising the computer for linuxCNC

Category: General LinuxCNC Questions

What are the following error limits set for?

Do you lose packets?

That is, what is hm2_7i76e.0.packet-error-total?

Can you post your hal / ini files?

Do you have the usual optimizations:

isolcpus = last cpu in grub (isocpus=3 for a 4 core CPU for example)

IRQ coalescing off with Intel MACS

DKMS driver installed with RealTek MACs

Ethernet IRQ pinned to last processor
 
  • LeonDolnicar
  • LeonDolnicar
31 Oct 2025 20:36
optimising the computer for linuxCNC was created by LeonDolnicar

optimising the computer for linuxCNC

Category: General LinuxCNC Questions

Hello from Slovenia

I built a 3 axis CNC milling machine. To run it I use a PC and mesa 7i76eu. They work well but every now and then I get an following error. To minimize this I increased latency from 1000000 to 1500000. Following errors are now less common (sey aonce per two hours of running). It is not critical but still it is anoying to rehome the machine. Is there anything I can do to optimize the computer and mesa comunication so there will not be any following errors.

thank you,
Leon Dolničar
  • DerKlotz
  • DerKlotz
31 Oct 2025 12:10
Joint 2 on limit switch error -> Z Axis was created by DerKlotz

Joint 2 on limit switch error -> Z Axis

Category: Basic Configuration

Hi,
i get the "Joint 2 on limit switch error". I have a Mesa 7i76e and you can find my configuration for Joint 2 attached. 
I tried several things but still with no success.
Please help
  • Hakan
  • Hakan
30 Oct 2025 08:29
Replied by Hakan on topic New ethercat / probe basic control for minimonster

New ethercat / probe basic control for minimonster

Category: CNC Machines

Here are the general signals that was generated for me by pncconf some years ago.
net spindle-vel-cmd-rps        <=  spindle.0.speed-out-rps
net spindle-vel-cmd-rps-abs    <=  spindle.0.speed-out-rps-abs
net spindle-vel-cmd-rpm        <=  spindle.0.speed-out
net spindle-vel-cmd-rpm-abs    <=  spindle.0.speed-out-abs
net spindle-enable             <=  spindle.0.on
net spindle-cw                 <=  spindle.0.forward
net spindle-ccw                <=  spindle.0.reverse
net spindle-brake              <=  spindle.0.brake
net spindle-revs               =>  spindle.0.revs
 net spindle-at-speed           =>  spindle.0.at-speed
setp spindle.0.at-speed 1
net spindle-vel-fb-rps         =>  spindle.0.speed-in
net spindle-index-enable      <=>  spindle.0.index-enable
net spindle-revs              <=   hm2_7i76e.0.encoder.04.position
net spindle-vel-fb-rps        <=   hm2_7i76e.0.encoder.04.velocity
net spindle-index-enable      <=>  hm2_7i76e.0.encoder.04.index-enable
net spindle-manual-cw     halui.spindle.0.forward
net spindle-manual-ccw    halui.spindle.0.reverse
net spindle-manual-stop   halui.spindle.0.stop
You would need at least the enable and one of the vel-cmds.
Maybe forward/reverse and so on.
They all connect to the spindle pins (created by the motmod component).
Speed feedback is optional but nice to have, at-speed if your spindle can do that.
 
  • bnet
  • bnet's Avatar
24 Oct 2025 19:48
Replied by bnet on topic Fanuc Serial Pulse Coders - Red cap servos, mesa 7i76e, how to?

Fanuc Serial Pulse Coders - Red cap servos, mesa 7i76e, how to?

Category: Driver Boards

I think you are suggesting that you could supply "fake" commutation signals from LinuxCNC to the drive, and that might be enough to persuade the drive to start working?

This is what I'm thinking. I will try it as soon as I have time and report back.
  • DerKlotz
  • DerKlotz
23 Oct 2025 11:21
Replied by DerKlotz on topic Button on Linuxcnc interface that switches an output on Mesa 7i76e on and off

Button on Linuxcnc interface that switches an output on Mesa 7i76e on and off

Category: GladeVCP

Thanks, i installed a new linux
  • andypugh
  • andypugh's Avatar
22 Oct 2025 14:20
Replied by andypugh on topic Button on Linuxcnc interface that switches an output on Mesa 7i76e on and off

Button on Linuxcnc interface that switches an output on Mesa 7i76e on and off

Category: GladeVCP

I think 6.1.0-30-rt should probably be OK. (though I think that the packages were built on 6.1.0.10-rt )
  • DerKlotz
  • DerKlotz
22 Oct 2025 13:58
Replied by DerKlotz on topic Button on Linuxcnc interface that switches an output on Mesa 7i76e on and off

Button on Linuxcnc interface that switches an output on Mesa 7i76e on and off

Category: GladeVCP

Hello,
you answered one of my posts. Can you help me installing the right kernel. I don´t know how to do it.

"Try repeating after typing
sudo apt purge raspi-firmware
If you still gets errors, share the output of uname -r as it appears it is trying to install an incorrect kernel version. "

I got this message 6.1.0-30-rt-amd64
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