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  • rocket6delta
  • rocket6delta
18 Jul 2025 20:52
Replied by rocket6delta on topic 7i76EU Hal and Ini File

7i76EU Hal and Ini File

Category: HAL

let me correct what i seen on the Step pins. I seen a very small drop from 5.08V to 5.06. Seems like something was holding it back.
  • rocket6delta
  • rocket6delta
18 Jul 2025 20:43
Replied by rocket6delta on topic 7i76EU Hal and Ini File

7i76EU Hal and Ini File

Category: HAL

Thanks.  I've made those corrections. I've made some progress today.  When i remove my physical estop button i can now hear the Z-axis brake release but still no motor movement on any axis. I took the step of putting a volt meter across the Dir and Step pins on the Mesa board.  I initially see 5V on all pins. Then i ran the MDI command 
G91 G0 X0.1.  I see values changing in Halmeter for pid.x.command, pid.x.output, stepgen.01.velocity-cmd and a voltage drop on the Dir Pins.  But no voltage drop on the Step pins.  This is the case for all axis.I feel like I'm close to getting this to work again.  My wiring has not been changed since it was last fully operational on all 3 servos.  I can't get them to move in the DMM software either.I'm attaching my Hal and Ini files.  For some reason it's not letting me load the Text files.  Any help is appreciated.Thanks Therman Simmons Fort Mill, SC 
  • G0G53Z148
  • G0G53Z148's Avatar
18 Jul 2025 17:06 - 18 Jul 2025 17:07
Replied by G0G53Z148 on topic Mesa Auswahl für größeres Projekt

Mesa Auswahl für größeres Projekt

Category: Deutsch

Hallo @tommylight
selbst auf die gefahr hin dich zu nerven
was sagst du zu der kombi

7i92TH
7i76U da ran eine 
7i83 für die Servos 
das wären
5 x Takt Richtung für Servos
1 x Encoder
1 x 0-10V für Poti
32 Ein und 16 Ausgänge
und ein Rs422 - Rs485 für eine 7i83
für 6 -10 bis +10V servos bzw 0-10V servos
mit 6 x Encoder

Das wäre Flexibel durch 3 Karten vom Budget her  nur 10€ Teurer als eine 7i76EU + 7i83
Ein Firmware habe ich auch gesehen 7i92t_7i76x1pd.bin
Da die 7i83 Ja dann wie du sagtest über den Smart Serial gesteuert wird sollte das eigentlich funktionieren:)

Danke für deine hilfe und schöne grüße aus österreicht
  • unknown
  • unknown
18 Jul 2025 01:00
Replied by unknown on topic Reduce read-all timing 7i76e + 7i77

Reduce read-all timing 7i76e + 7i77

Category: Advanced Configuration

What the difference between AI and the crazy guy yelling at the sky on a street corner, the advice appears the same.
  • PCW
  • PCW's Avatar
17 Jul 2025 23:13 - 17 Jul 2025 23:14
Replied by PCW on topic 7i76EU Hal and Ini File

7i76EU Hal and Ini File

Category: HAL

I would change these in the ini file
from:

DIRSETUP = 100
DIRHOLD = 1000
STEPLEN = 2500
STEPSPACE = 2500

to:

DIRSETUP = 10000
DIRHOLD = 10000
STEPLEN = 5000
STEPSPACE = 5000

also:

P = 0.0
I = 0.0
D = 0.0
FF0 = 1.0
FF1 = 0.0
FF2 = 0.0
BIAS = 0.0
DEADBAND = 0.0

should be:

P = 1000
I = 0.0
D = 0.0
FF0 = 0.0
FF1 = 1.0
FF2 = 0.0
BIAS = 0.0
DEADBAND = 0.0 

These changes apply to all joints.
 
  • rocket6delta
  • rocket6delta
17 Jul 2025 22:47 - 17 Jul 2025 23:11
7i76EU Hal and Ini File was created by rocket6delta

7i76EU Hal and Ini File

Category: HAL

I've went through the pncconf wizard to set up a 7i76eu board. I can get the x-axis to job in Linuxcnc but the motors are not moving.  All wiring is connected correctly to the board and driver.  I know this because it was moving at one point and then i made the mistake of trying to swap from Axis to Probe Basic and ChatGpt was telling me to do some stuff that obviously messed it up.  So my files here are the result of going through the set up wizard a second time.  It's not the originals.  I'm essentially trying to get back to where i was.  I have communication with the board.  DMM Dyn4 drivers has a solid green light on the front of each.  The only thing of note worthy is the Z-Axis pins from the driver are connected to the Step 0 pins on TB2, X axis on Step 1 pins, and Y axis on Step 2 pins.  This is due to short cables and i don't want to move them.  I made these changes in the wizard too.Can anyone take a look at my Hal and Ini files to see any issues?  I'm attaching the files and TXT files for reading.
  • PCW
  • PCW's Avatar
17 Jul 2025 15:26
Replied by PCW on topic Reduce read-all timing 7i76e + 7i77

Reduce read-all timing 7i76e + 7i77

Category: Advanced Configuration

If those are AI suggestions, they are pure nonsense...

To reduce network latency:

1. Make sure basic host latency setup is done (disable power management etc)

2. If you have an intel MAC on the host PC, disable IRQ coalescing.

3. Use isolcpus to run LinuxCNC on the last CPU

4.  (in conjunction with #3) Pin the Ethernet IRQ to the last CPU
(and set irqbalance to one-shot mode so it doesn't mess with the IRQ pinning)

To check maximum network latency:

sudo chrt 99 ping -i .001 -q -c 60000 10.10.10.10

( Assuming 10.10.10.10 is the 7I76E IP address ) 

This will run for 1 minute and print statistics

 
  • endian
  • endian's Avatar
17 Jul 2025 10:35
Replied by endian on topic Reduce read-all timing 7i76e + 7i77

Reduce read-all timing 7i76e + 7i77

Category: Advanced Configuration

I did the 
packet-read-timeout=500000
sserial_port_0=2000x to sserial_port_0=2000h

ping between mesa is less then 0,3ms and it is per to per connection

I did not try the custom firmware 
./mesa-configtool --new-fpga 7i76e --no-sserial --optimize-read

goal is -
SERVO_PERIOD = 500000

resualt is no change at all ... 
  • unknown
  • unknown
17 Jul 2025 10:15
Replied by unknown on topic Reduce read-all timing 7i76e + 7i77

Reduce read-all timing 7i76e + 7i77

Category: Advanced Configuration

So you tried stuff AI has, what have you tried and what were the exact results ? To save repeating stuff.
  • endian
  • endian's Avatar
17 Jul 2025 09:37
Reduce read-all timing 7i76e + 7i77 was created by endian

Reduce read-all timing 7i76e + 7i77

Category: Advanced Configuration

Hello gentelmen,

How to reduce the read-all timig from 0,8ms to something below please? Ping I have beloe 0,3ms and latency at servothread below 800ns 

I am using 7i76e+7i77 at P1 with 3 axis setup..

I have tried everything what AI told me but without any success ... 

thanks
  • G0G53Z148
  • G0G53Z148's Avatar
16 Jul 2025 06:53
Replied by G0G53Z148 on topic Mesa Auswahl für größeres Projekt

Mesa Auswahl für größeres Projekt

Category: Deutsch

Guten morgen Tommylight
Danke für den beitrag

ich hab in der tat vergessen das min
3 Encoder eingänge
gebraucht werden. 1 im Bedienpult zum einrichten und 2 an den Spindeln zum Synchronisieren

4 Servos davon 3 0-10V für 2 Angetriebene Werkzeuge und 1 Für die Spindel 2 und -10 bis +10 für die Hauptspindel

7i96S
5 Step-Dir
11 iso Eingang
6 iso Ausgang
1 Encoder

7i83
6 -10 bis +10 Servo
6 5-24V Ausgänge

7i84S
Wie kann ich das verstehen vierkanal Encoder A/B/Z/
(Die Beschreibung ist für nicht Profies wie sie etwas schwer zu durchblicken bisher hatte ich es nur mit 7i76E zu tun)
und 4x2 Step/Dir oder PWM oder 8x 5V Ausgänge
Hier stellt sich mir die frage wie Bekomme ich den DB25 dann an die 7i96s bzw die 7i83? Es haben ja alle 3 karten verschiedene anschlüsse.

danke für die hilfe und schöne grüße


 
  • PCW
  • PCW's Avatar
10 Jul 2025 18:08
Replied by PCW on topic Noise issue related to mesa board 7I76E

Noise issue related to mesa board 7I76E

Category: Computers and Hardware

The mouse issue sounds like EMI so likely a grounding/line filter issue with the servo drives

Ethernet is much more EMI resistant than USB so that may be a latency issue.

To check network latency, run this:

sudo chrt 99 ping -i .001 -q -c 60000 [card_ip_addr]

Where [card_ip_addr] is either 192.168.1.121 or 10.10.10.10 depending on the 7I76E settings

This will run for 1 minute and print timing statistics
 
  • tommylight
  • tommylight's Avatar
10 Jul 2025 15:30
Replied by tommylight on topic Noise issue related to mesa board 7I76E

Noise issue related to mesa board 7I76E

Category: Computers and Hardware

Is everything on the machine and the PC grounded?
Is that grounding good? This is very hard to figure out, but give it a try.
  • unknown
  • unknown
10 Jul 2025 08:22
Replied by unknown on topic Noise issue related to mesa board 7I76E

Noise issue related to mesa board 7I76E

Category: Computers and Hardware

Not a lot of info to go on.
If your PC uses a realtek NIC I would search the forums for what to do. That would be a good starting point.

Next thing would be to ensure no "noisy" wires are crossing signal wires.

Next thing would be to ensure that the PSU that are powering the Mesa baord are giving a clean voltage. A good quality PSU, such as Meanwell or Weidmuller are good choices. Ensure the servo drivers are wired according to the manuals, don't skip the recommendations fro any filtering, not a cheap exercise, but well worth worth it.

Keep power wiring away from signal wiring. Don't expect a "rat's nest" to operate trouble free.

Don't wire every at once, wire one section at a time and test, trouble shoot and fix as you go. If something stops performing as it should it makes trouble shooting easier as you can start at the last addition you made.

Where ever possible terminate the ends of bare wires with "bootlace ferrules" makes inserting wiring into screw connectors easier and prevents start strands of wires floating in the breeze.

If you have implemented all these measures and have "noise" issues you will need to provide far more information. PCW may chime in and ask for you to do some "ping tests" and such, as this is his domain I shall leave it to him to guide you through that part.
  • Daroum
  • Daroum
10 Jul 2025 07:22

Noise issue related to mesa board 7I76E

Category: Computers and Hardware

Hello everyone, 
I am using mesa board 7I76E to control 5 axis cnc with servo motors 
I installed the linuxcnc on a laptop when i run linuxcnc with the mesa board on the laptop everything works well i got some wired interference like loosing Ethernet communication with the board or the mouse pad will be crashed all the time but i was ignore them because they didn't really influence on my project.
After that i installed the same version of linuxcnc on a desktop computer in fact i used the same ssd so it was the same software, the same configuration at this moment the noise issue became more than usually now i lost the communication every 5 min around ana that's a big problem. Do you have an idea what is the exact issues happened to me , how could i decrease those noise 
Thanks in advance 
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