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The OP may need to update LinuxCNC to the latest 2.9.4 or 2.10

I'm not an expert in this as I usually use a built from source RIP installation
 

PCW wrote:

man hm2_modbus

man mesambccc

 

You forgot "man"

i have LINUXCNC - 2.9.4 the last version but where can i find man hm2_modbus, can you show me how to use hm2_modbus, mesambccc, give me examples please
I use mesambccc --help, it dos not exist
 

i have LINUXCNC - 2.9.4 the last version but where can i find man hm2_modbus, can you show me how to use hm2_modbus, mesambccc, give me examples please

hm2_modbus is an alternate modbus interface to Mesa FPGA cards with 
PKTUART firmware. It supports additional features such as multiple devices
per interface, one time initialization code etc etc.

You need to have the latest LinuxCNC to have hm2_modbus

if

man hm2_modbus

Gives you a manual page, you have a late enough version of LinuxCNC
to use hm2_modbus.

hm2_modbus will work with your existing firmware.

 

I dont understand what is hm2_modbus new firmware ?
How to use it, what i should do ?
in mesa modbus i just find this
PktUART
MB2HAL
vfdmod
Classic Ladder
i want to use Classic ladder but i dont know how

The original modbus driver only supports one device per interface
(its basically for VFD spindles or just single devices)

For multiple devices, use hm2_modbus

man hm2_modbus

man mesambccc
 

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