Re: [Emc-users] Mesa 7i43 TRAM error

[Nicklas Karlsson]

Tram is a ram error?

On Wed, 7 Feb 2018 14:46:32 -0500
"Eric H. Johnson"  wrote:

> All,
> 
>  
> 
> Just this week I started getting TRAM errors on a machine that has been
> running for years. This system uses the Mesa 7i43 card. I had this happen
> once before, but on a new machine with a brand new 7i43 card. I replaced the
> card and the problem went away. On this machine I replaced the 7i43, and it
> ran for about 3 hours flawlessly, then the TRAM error came back. It so
> happened that the 7i43 is the 400K version and the old one is the 200K, so
> running a different driver as well.
> 
>  
> 
> Is the problem now likely the parallel port on the motherboard, or is there
> some place else I should be looking. I have disconnected and reconnected the
> cables multiple times, so I doubt that is the culprit.
> 
>  
> 
> Thanks,
> 
> Eric
> 
>  
> 
> --
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> ___
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users

--
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] Mesa 7i43 TRAM error

[Peter C. Wallace]

On Tue, 13 Feb 2018, Eric H. Johnson wrote:


Date: Tue, 13 Feb 2018 13:58:47 -0500
From: Eric H. Johnson <ejohn...@camalytics.com>
Reply-To: "Enhanced Machine Controller (EMC)"
<emc-users@lists.sourceforge.net>
To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net>
Subject: Re: [Emc-users] Mesa 7i43 TRAM error

Peter,

I tried grounding several different ways. Made no difference. See if this is 
a clue. I have one 7i43 for development, with the USB connector, the rest 
(-P) use an external 5V supply. I plugged in the development board powered 
by USB. The TRAM error no longer appears, but it does seem to stop 
communicating with the 7i43. When this happens I lose lock and hold (using 
servos), and if running at the time, get a following error. Cannot re-enable 
amplifiers without doing a reboot.


Any ideas? I do have a new motherboard on order.

Thanks,
Eric



Yeah Sounds like a bad parallel port if you have problems with 2 different 
7I43s





On February 8, 2018 12:27:27 PM EST, "Peter C. Wallace" <p...@mesanet.com> 
wrote:

On Thu, 8 Feb 2018, Eric H. Johnson wrote:


Date: Thu, 8 Feb 2018 11:51:24 -0500
From: Eric H. Johnson <ejohn...@camalytics.com>
Reply-To: "Enhanced Machine Controller (EMC)"
<emc-users@lists.sourceforge.net>
To: "'Enhanced Machine Controller (EMC)'"

<emc-users@lists.sourceforge.net>

Subject: Re: [Emc-users] Mesa 7i43 TRAM error

Peter,

Voltage to the card is 4.97V. The cable length is 2'. I had a spare,

but the

same length. Swapped anyway and getting basically the same thing. A

PITA

because it usually takes 1-3 hours for the error to occur after a

cold

start. I am not seeing anything shorter than 3' on the Mesa Price

list. The

distance in the panel between the parallel port on the computer and

the 7i43

is easily less than 1'. This computer still has a DB25, but the new
motherboards I have use just a female header on the motherboard side

too.

There must be an adapter that goes to a female DB25.

Is 2' still too much or is the problem elsewhere?

Thanks,
Eric



It might be if there is a ground loop so there is significant high
frequency
current flowing through the cable ground pins.

One thing to try is to use a very short ( 3" or so ) heavy wire between
the PC
case ground and the 7I43 Ground (just as a test) to shunt any ground
currents
flowing through the EPP cable.






I would check that the 7I43s 5V power is OK and maybe try a shortened

EPP

cable. A TRAM error means the EPP handshake failed (sort of like the

card

reset or totallly lost communications somehow )






--

Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users



Peter Wallace
Mesa Electronics

(\__/)
(='.'=) This is Bunny. Copy and paste bunny into your
(")_(") signature to help him gain world domination.


--
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users


--
Sent from my Android device with K-9 Mail. Please excuse my brevity.
--
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users



Peter Wallace
Mesa Electronics

(\__/)
(='.'=) This is Bunny. Copy and paste bunny into your
(")_(") signature to help him gain world domination.


--
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] Mesa 7i43 TRAM error

[Eric H. Johnson]

Peter,

I tried grounding several different ways. Made no difference. See if this is a 
clue. I have one 7i43 for development, with the USB connector, the rest (-P) 
use an external 5V supply. I plugged in the development board powered by USB. 
The TRAM error no longer appears, but it does seem to stop communicating with 
the 7i43. When this happens I lose lock and hold (using servos), and if running 
at the time, get a following error. Cannot re-enable amplifiers without doing a 
reboot.

Any ideas? I do have a new motherboard on order.

Thanks,
Eric


On February 8, 2018 12:27:27 PM EST, "Peter C. Wallace" <p...@mesanet.com> 
wrote:
>On Thu, 8 Feb 2018, Eric H. Johnson wrote:
>
>> Date: Thu, 8 Feb 2018 11:51:24 -0500
>> From: Eric H. Johnson <ejohn...@camalytics.com>
>> Reply-To: "Enhanced Machine Controller (EMC)"
>> <emc-users@lists.sourceforge.net>
>> To: "'Enhanced Machine Controller (EMC)'"
><emc-users@lists.sourceforge.net>
>> Subject: Re: [Emc-users] Mesa 7i43 TRAM error
>> 
>> Peter,
>>
>> Voltage to the card is 4.97V. The cable length is 2'. I had a spare,
>but the
>> same length. Swapped anyway and getting basically the same thing. A
>PITA
>> because it usually takes 1-3 hours for the error to occur after a
>cold
>> start. I am not seeing anything shorter than 3' on the Mesa Price
>list. The
>> distance in the panel between the parallel port on the computer and
>the 7i43
>> is easily less than 1'. This computer still has a DB25, but the new
>> motherboards I have use just a female header on the motherboard side
>too.
>> There must be an adapter that goes to a female DB25.
>>
>> Is 2' still too much or is the problem elsewhere?
>>
>> Thanks,
>> Eric
>
>
>It might be if there is a ground loop so there is significant high
>frequency 
>current flowing through the cable ground pins.
>
>One thing to try is to use a very short ( 3" or so ) heavy wire between
>the PC 
>case ground and the 7I43 Ground (just as a test) to shunt any ground
>currents 
>flowing through the EPP cable.
>
>
>
>>
>>
>> I would check that the 7I43s 5V power is OK and maybe try a shortened
>EPP
>> cable. A TRAM error means the EPP handshake failed (sort of like the
>card
>> reset or totallly lost communications somehow )
>>
>>
>>
>>
>>
>--
>> Check out the vibrant tech community on one of the world's most
>> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
>> ___
>> Emc-users mailing list
>> Emc-users@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/emc-users
>>
>
>Peter Wallace
>Mesa Electronics
>
>(\__/)
>(='.'=) This is Bunny. Copy and paste bunny into your
>(")_(") signature to help him gain world domination.
>
>
>--
>Check out the vibrant tech community on one of the world's most
>engaging tech sites, Slashdot.org! http://sdm.link/slashdot
>___
>Emc-users mailing list
>Emc-users@lists.sourceforge.net
>https://lists.sourceforge.net/lists/listinfo/emc-users

-- 
Sent from my Android device with K-9 Mail. Please excuse my brevity.
--
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] Mesa 7i43 TRAM error

[Eric H. Johnson]

Peter,

Voltage to the card is 4.97V. The cable length is 2'. I had a spare, but the
same length. Swapped anyway and getting basically the same thing. A PITA
because it usually takes 1-3 hours for the error to occur after a cold
start. I am not seeing anything shorter than 3' on the Mesa Price list. The
distance in the panel between the parallel port on the computer and the 7i43
is easily less than 1'. This computer still has a DB25, but the new
motherboards I have use just a female header on the motherboard side too.
There must be an adapter that goes to a female DB25.

Is 2' still too much or is the problem elsewhere?

Thanks,
Eric 


I would check that the 7I43s 5V power is OK and maybe try a shortened EPP
cable. A TRAM error means the EPP handshake failed (sort of like the card
reset or totallly lost communications somehow )




--
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] Mesa 7i43 TRAM error

[MH via Emc-users]

Hello Eric,

I myself had EMI problems with the parallel port cable to the Mesa 7i43
on one machine once. They appeared after over 2y of regular day to day
operation of the machine and I had no idea why. Love and HF go
mysterious ways.

Anyway, I solved it first with roll of regular kitchen aluminium foil
into which I wrapped the parallel port cable and which I clamped indeed
very crudely to ground on one side. Later then I used copper foil and
soldered a connection to GND to shield the parallel port cable. I had no
problems since then.

Try to keep the parallel port cable as short as you possibly can.

BR
Max.



Am 07.02.2018 um 20:46 schrieb Eric H. Johnson:
> All,
> 
>  
> 
> Just this week I started getting TRAM errors on a machine that has been
> running for years. This system uses the Mesa 7i43 card. I had this happen
> once before, but on a new machine with a brand new 7i43 card. I replaced the
> card and the problem went away. On this machine I replaced the 7i43, and it
> ran for about 3 hours flawlessly, then the TRAM error came back. It so
> happened that the 7i43 is the 400K version and the old one is the 200K, so
> running a different driver as well.
> 
>  
> 
> Is the problem now likely the parallel port on the motherboard, or is there
> some place else I should be looking. I have disconnected and reconnected the
> cables multiple times, so I doubt that is the culprit.
> 
>  
> 
> Thanks,
> 
> Eric
> 
>  
> 
> --
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> ___
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users
> 

--
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] Mesa 7i43 TRAM error

[Nicklas Karlsson]

I have seen the TRAM error but can't remember exactly why.

On Wed, 7 Feb 2018 14:46:32 -0500
"Eric H. Johnson"  wrote:

> All,
> 
>  
> 
> Just this week I started getting TRAM errors on a machine that has been
> running for years. This system uses the Mesa 7i43 card. I had this happen
> once before, but on a new machine with a brand new 7i43 card. I replaced the
> card and the problem went away. On this machine I replaced the 7i43, and it
> ran for about 3 hours flawlessly, then the TRAM error came back. It so
> happened that the 7i43 is the 400K version and the old one is the 200K, so
> running a different driver as well.
> 
>  
> 
> Is the problem now likely the parallel port on the motherboard, or is there
> some place else I should be looking. I have disconnected and reconnected the
> cables multiple times, so I doubt that is the culprit.
> 
>  
> 
> Thanks,
> 
> Eric
> 
>  
> 
> --
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> ___
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users

--
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] Mesa 7i43 TRAM error

[Peter C. Wallace]

On Wed, 7 Feb 2018, Eric H. Johnson wrote:


Date: Wed, 7 Feb 2018 14:46:32 -0500
From: Eric H. Johnson <ejohn...@camalytics.com>
Reply-To: "Enhanced Machine Controller (EMC)"
<emc-users@lists.sourceforge.net>
To: "'Enhanced Machine Controller (EMC)'" <emc-users@lists.sourceforge.net>
Subject: [Emc-users] Mesa 7i43 TRAM error

All,



Just this week I started getting TRAM errors on a machine that has been
running for years. This system uses the Mesa 7i43 card. I had this happen
once before, but on a new machine with a brand new 7i43 card. I replaced the
card and the problem went away. On this machine I replaced the 7i43, and it
ran for about 3 hours flawlessly, then the TRAM error came back. It so
happened that the 7i43 is the 400K version and the old one is the 200K, so
running a different driver as well.



Is the problem now likely the parallel port on the motherboard, or is there
some place else I should be looking. I have disconnected and reconnected the
cables multiple times, so I doubt that is the culprit.



Thanks,

Eric



I would check that the 7I43s 5V power is OK and maybe try a shortened EPP 
cable. A TRAM error means the EPP handshake failed (sort of like the card 
reset or totallly lost communications somehow )





--
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users



Peter Wallace
Mesa Electronics

(\__/)
(='.'=) This is Bunny. Copy and paste bunny into your
(")_(") signature to help him gain world domination.


--
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] Mesa 7i43 TRAM error

[Gene Heskett]

On Wednesday 07 February 2018 14:46:32 Eric H. Johnson wrote:

> All,
>
>
>
> Just this week I started getting TRAM errors on a machine that has
> been running for years. This system uses the Mesa 7i43 card. I had
> this happen once before, but on a new machine with a brand new 7i43
> card. I replaced the card and the problem went away. On this machine I
> replaced the 7i43, and it ran for about 3 hours flawlessly, then the
> TRAM error came back. It so happened that the 7i43 is the 400K version
> and the old one is the 200K, so running a different driver as well.
>
>
>
> Is the problem now likely the parallel port on the motherboard, or is
> there some place else I should be looking. I have disconnected and
> reconnected the cables multiple times, so I doubt that is the culprit.
>
>
>
> Thanks,
>
> Eric

Does it even have motors to rotate the head on a horizontal axis?

>
>
> --
> Check out the vibrant tech community on one of the world's
> most engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> ___
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users



-- 
Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page 

--
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

[Emc-users] Mesa 7i43 TRAM error

[Eric H. Johnson]

All,

 

Just this week I started getting TRAM errors on a machine that has been
running for years. This system uses the Mesa 7i43 card. I had this happen
once before, but on a new machine with a brand new 7i43 card. I replaced the
card and the problem went away. On this machine I replaced the 7i43, and it
ran for about 3 hours flawlessly, then the TRAM error came back. It so
happened that the 7i43 is the 400K version and the old one is the 200K, so
running a different driver as well.

 

Is the problem now likely the parallel port on the motherboard, or is there
some place else I should be looking. I have disconnected and reconnected the
cables multiple times, so I doubt that is the culprit.

 

Thanks,

Eric

 

--
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users