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At the end those two adresses are not readable and i change them according the the mitsubishi datasheet with two other adresses and it works thank you so much for your help
i have one last question please now i want to read data from different slaves (3 servo dirvers) how can i do that , i've tried to add a second device initialization on the hal file and i created a new comp file but the problem is one of them connect and the second slave doesn't respond

Are holding registers at 0003 and 0004 readable?

Hello Bro's;
I m trying to control (read/write ) data from MR-JE mistubishi servo drive using the 7I76EU mesa board, using PKTUART, i could reveive data from mitsubishi HMI but when i tried reading the data from the servo drive, it seems like the connection happened but there is not data reed and when i run the linuxcnc it take time to open not like usual time and two type of error appear as shown on the pic bellow. you will find also the .HAL configuration file and the C file where i put the adresse i wanted to read 
 

Thanks bro, I try to download it several times but didn't work, until i use an other pc problem in my pc
 

store.mesanet.com/index.php?route=produc...oduct&product_id=399
Click on the specifications tab

where can i find it ?

You would load the 7I76eu firmware that includes PKTUart support

7i76eu_7i76x1_pktv3d.bin

This file is in the 7i76eu.zip archive downloaded from Mesa's store (in the specifications tab)

You program it with mesaflash, something like:

mesaflash --device 7i76eu --addr 10.10.10.10 --write 7i76eu_7i76x1_pktv3d.bin --reload

 

Hi andypugh,
i dont know how to flash the pktUART, i dont know how to download it, i want to use it to control mr-je driver from Mitsubishi
 

AdelRTP wrote:

thanks a lot Tommy,
i’m trying to control two servo drives (Modbus RTU) with a Mesa 7i76EU in LinuxCNC, but I can’t use Classic Ladder or PktUART

Have you spotted the new Modbus / PktUART driver? It's more flexible that mesa_modbus. (but only exists in the dev version of LinuxCNC) 

linuxcnc.org/docs/devel/html/man/man1/mesambccc.1.html
linuxcnc.org/docs/devel/html/man/man9/hm2_modbus.9.html
 

Moved to "driver boards" section.

thanks a lot Tommy,
i’m trying to control two servo drives (Modbus RTU) with a Mesa 7i76EU in LinuxCNC, but I can’t use Classic Ladder or PktUART

Use the latest version of mesaflash
github.com/LinuxCNC/mesaflash
Scroll down for info on how to install.

Using  with a Mesa 7i76EU (IP ). Ping works, but:mesaflash --device 7i76eu --addr 192.168.1.121 --readhmid
Unsupported ethernet device 7I76EU at 192.168.1.121
No 7I96S board found
Also tried with IP  after moving jumper W14 up
mesaflash --device 7i76eu --addr 10.10.10.10 --readhmidIs the 7i76EU supported? How to fix "Unsupported device"? 

I finally found the real cause.

Today i got the amplifier fault on another joint (joint 0) and I found that it the problem happened whenever I turned on the spindle.

After several attempts to measure the ground connections the machine stopped in a position where I found the machine frame was not grounded.

The reason: The spindle connector got loose. The machine frame was grounded through the spindle cable, and that cable had become loose.

All I had to do was tighten the screw of the connector. Ground connection works reliably again and the machine runs well. Phew.

So, has there been any progress on getting this sensor to market? 

I'm trying to get a laser machine built, but, this is one of the toughest issues I'm facing.  I have a MESA 7i76EU that I have been trying to interface a BCL-AMP output to.  I have the BCL-AMP connected to a Raytools BT210S002A cutting head sitting on the bench with a chunk of steel in front of it and grounded to the case of the Raytools cutting head.  Between the BCL-AMP and the 7i76EU, I have a TI SN74HCS74DR dual Schmidt Trigger Flip Flop that I'm using to divide the BCL-AMP output frequency by 2 and "clean it up" at the same time.  However, it's just not very stable.  The velocity measured by the 7i76EU jumps around about 600-700 hz.  The velocity range only seems to be around 6500 hz from 0-10mm (3/8") sensing distance, so, my positional sensitivity sucks at around 0.1 inches.  Just for giggles, I ran the signal through 4 Flip Flops to see if the 'jumping around' would decrease.  It didn't.  Which leads me to believe the instability is introduced somewhere in my circuitry or wiring.  I even tried connecting Q and Q not outputs into the MESA card as differential signals and twisted the wires.  No help.

Anyhow, This CV2 height sensing device sounds very promising.