Peter,

Not sure,  considering how many years ago its been since I set this up I may 
have forrgotton about changing user permisions or adding a group.  I'll have to 
look into that tomorrow.

Todd Zuercher
P. Graham Dunn Inc.
630 Henry Street 
Dalton, Ohio 44618
Phone:  (330)828-2105ext. 2031

-----Original Message-----
From: Peter Wallace <p...@mesanet.com> 
Sent: Tuesday, May 07, 2024 4:16 PM
To: Todd Zuercher via Emc-users <emc-users@lists.sourceforge.net>
Cc: Todd Zuercher <to...@pgrahamdunn.com>
Subject: Re: [Emc-users] Mb2hal 2.9?

[EXTERNAL EMAIL] Be sure links are safe.

On Tue, 7 May 2024, Todd Zuercher via Emc-users wrote:

> Date: Tue, 7 May 2024 19:59:55 +0000
> From: Todd Zuercher via Emc-users <emc-users@lists.sourceforge.net>
> To: "Enhanced Machine Controller (EMC)" 
> <emc-users@lists.sourceforge.net>
> Cc: Todd Zuercher <to...@pgrahamdunn.com>
> Subject: [Emc-users] Mb2hal 2.9?
>
> The machine that I've been working on updating from 2.7 to 2.9 has hit a 
> snag.  The one thing I didn't change now seems to be giving me the most 
> trouble.
>
> The machine has 8 vfds for running 8 router spindles, they are/were connected 
> to Linuxcnc using Mb2hal and a usb RS485 dongle.  It was working find on the 
> old pc running Ubuntu, RTAi, and Linuxcnc 2.7.  I copied the old mb2hal.ini 
> and it's associated hal file over to the new machine and added them to the 
> config, but I can not seem to establish communication between Linuxcnc and 
> the drives.  Starting Linuxcnc from the terminal, and it pukes out this 
> string of error messages, so fast that I can't find any other possibly more 
> informative error messages further up the log, (beacaue I can't scroll past 
> all this other junk.)  My mb2hal config has 32 transactions, and there is an 
> error msg like below for each of the 32, then the list repeats ad nauseum.   
> Any one have any ideas what's going on?  The PC is running Debian 12, with 
> Linuxcnc installed from the Debian repos.
>
> mb2hal get_tx_connection ERR: mb_tx_num[0] mb_links[0] cannot connect 
> to link, ret[-1] fd[-1] mb2hal get_tx_connection ERR: mb_tx_num[1] 
> mb_links[0] cannot connect to link, ret[-1] fd[-1] mb2hal 
> get_tx_connection ERR: mb_tx_num[2] mb_links[0] cannot connect to 
> link, ret[-1] fd[-1] mb2hal get_tx_connection ERR: mb_tx_num[3] 
> mb_links[0] cannot connect to link, ret[-1] fd[-1] mb2hal 
> get_tx_connection ERR: mb_tx_num[4] mb_links[0] cannot connect to 
> link, ret[-1] fd[-1] mb2hal get_tx_connection ERR: mb_tx_num[5] 
> mb_links[0] cannot connect to link, ret[-1] fd[-1] mb2hal 
> get_tx_connection ERR: mb_tx_num[6] mb_links[0] cannot connect to 
> link, ret[-1] fd[-1] mb2hal get_tx_connection ERR: mb_tx_num[7] 
> mb_links[0] cannot connect to link, ret[-1] fd[-1] mb2hal 
> get_tx_connection ERR: mb_tx_num[8] mb_links[0] cannot connect to 
> link, ret[-1] fd[-1]
>
> Moving the RS485 dongle back to the old pc and loading the mb2hal config 
> there gives no errors.  So it shouldn't be a hardware or config issue that 
> I'm aware of.  Did something significant change in mb2hal between 2.7 and 2.9 
> that would require a change to the mb2hal configuration files?
>
> Todd Zuercher
> P. Graham Dunn 
> Inc.<https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F%2F
> www.pgrahamdunn.com%2Findex.php&data=05%7C02%7Ctoddz%40pgrahamdunn.com
> %7Cab367b57db9e4abbdc5108dc6ed282a3%7C5758544c573f47cebee96c3e0806fb43
> %7C0%7C0%7C638507097628024227%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAw
> MDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=
> rIq1Puq3K28VXm9oJqLE09fKDnjDgo1XGfCzicJGRTQ%3D&reserved=0>
> 630 Henry Street
> Dalton, Ohio 44618
> Phone:  (330)828-2105ext. 2031
>

Could this be some permissions or device name error with USB--> RS-485 device 
driver?


Peter Wallace
Mesa Electronics


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