Advanced Search

7I76EU pin names are identical to 7I76E names

Can you post your current hal/ini files?

it's possible...i measured 24V on the output pins.....these lines look different then when the machine was last operational but i had ChatGPT produce these...they don't seem right to me but i don't know enough...my board is a 7i76EU so i was thinking of replacing 7i76 with 7i76EU......if i comment these lines out the z axis brake doesn't release...

therman@Debian-LinuxCNC:~$ halcmd getp hm2_7i76.0.7i76.0.0.output-01
TRUE
therman@Debian-LinuxCNC:~$ halcmd getp hm2_7i76.0.7i76.0.0.output-00
TRUE
therman@Debian-LinuxCNC:~$ halcmd getp hm2_7i76.0.7i76.0.0.output-02
TRUE

You would not normally see much of a change in STEP
pin outputs as the STEP pulses are short and do not change
the average voltage ( what a voltmeter reads ) very much.

You should see a change in the voltage on the DIR
pins when jogging in different directions.
 
It this possibly an issue with the motor drive enables?

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.

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 

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

What the difference between AI and the crazy guy yelling at the sky on a street corner, the advice appears the same.

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.
 

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.

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

 

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

I did not try the custom firmware 
goal is -
resualt is no change at all ... 

So you tried stuff AI has, what have you tried and what were the exact results ? To save repeating stuff.

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

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


 

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