Re: [Emc-users] 5I25+7I77 problems

[Peter C. W. <pc...@me...>]

On Thu, 31 Oct 2013, Ralph Stirling wrote:

> Date: Thu, 31 Oct 2013 14:54:28 +0000
> From: Ralph Stirling <Ral...@wa...>
> Reply-To: "Enhanced Machine Controller (EMC)"
>     <emc...@li...>
> To: "emc...@li..." <emc...@li...>
> Cc: Tosh Jones <Tos...@wa...>
> Subject: [Emc-users] 5I25+7I77 problems
> 
> I've been giving a little advice and help to a student
> retrofitting a mill in the Technology department machine
> shop.  He has stripped out the old Delta control and has
> wired in a 7I77 connected to a 5I25.  I sat down with
> him and went through pncconf, but when we got to
> actually trying to make things move, I discovered he
> didn't have any 24V field power wired up.  Came back
> a few days later to make more progress.  No luck.  Here
> is the situation:
>
> 1. The 7I77 jumper W1 had been left in the default (left)
>    position when 24V was applied to VFIELD.  This caused
>    CR15 and CR16 to light.

This is normally what you want (7I77 W1 in the left hand position so that you 
only need to supply field power to TB2 pins 1 and 8)

>
> 2. After removing VFIELD, moving W1 to the right, and reapplying
>    VFIELD, all led's except CR3 are off.
>
> 3. Since CR1 was off, I checked the 5I25 jumpers, and found
>    W1 up but W2 down.  Moved W2 up also, still no CR1 lit on 7I77.
>

No CR1 means no 5V on 7I77

Options are:

1. power 7I77 5V from 5I25

5I25 W1 up
7I77 W5 left

2. Power 7I77 5V from external 5V source

5I25 W1 down
7I77 W5 right
7I77 5V supplied to TB1



> 4. LinuxCNC obviously won't start successfully.  Dmesg shows 5I25
>    found, registered, initialized, then dropped.  Linuxcnc_debug.txt
>    shows:
>     Can not find -sec MOT -var MOT -num 1
>     Can not find -sec IO -var IO -num 1
>     Can not find -sec LINUXCNC -var NML_FILE -num 1
>     Can not find -sec EMC -var NML_FILE -num 1
>
>    These sound to me like ini/hal file problems, but ini and hal are
>    straight out of pncconf, which seemed to run fine.
>
> So, I suspect I've got multiple problems, but I would very much
> appreciate help sorting them out.  I haven't used the 5I25 and 7I77
> before (just lots of time with the 7I43).
>
> Thanks,
> -- Ralph
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Peter Wallace
Mesa Electronics

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