Can i connect 7i29 to P4 connector on 5i20??

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04 Oct 2011 10:36 - 04 Oct 2011 10:41 #13640 by machete
Good day!

My current configuration:

5i20 with 3 flat cables connecting:
P2 -> 7i37TA (automatics)
P3 -> 7i47S (spindle+handwheel+automatics)
P4 -> 7i29+7i29 (4axis)



I'm trying to create configuration with pncconf.

Choosing firmware: SVST8_4
(5 pwm, 5 encoders)

Look in tabs explaining connectors (P2, P3, P4) - and only way i see is to connect my 7i29 to P2...
But i already made cables with exact length...

So, is it possible to change software configuration to connect 7i29 exactly to P4? Or it will be better to make new flat cables?
Last edit: 04 Oct 2011 10:41 by machete.

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04 Oct 2011 12:05 #13643 by andypugh
machete wrote:

So, is it possible to change software configuration to connect 7i29 exactly to P4? Or it will be better to make new flat cables?


It is possible by changing the FPGA firmware, ie creating a new version of SVST8_4, but that requires compilation tools from Xilinx. (which are zero-cost, but not Free, so can't be distributed with EMC2).

I think making new cables is probably easier, unfortunately.

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04 Oct 2011 13:55 #13647 by machete
OK, thanks for answer!

I will make a new cable.

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04 Oct 2011 14:31 #13649 by PCW
I can make such a config pretty quickly if you like, it really just amounts
to cut/pasting a section of the pinout file around and re-compiling
(if you have the Xilinx tools setup), no more than a 5 minute job

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05 Oct 2011 00:52 #13663 by cmorley
Though you then won't be able to use PNCconf - unless your using EMC2.5 and add a special file.
i wish we could pull out the code that makes the XML file so Peter could build XML files too....

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05 Oct 2011 01:01 #13664 by PCW
Actually it would be better if this was done live from the FPGA IDROM data
then there is no chance of mis-matched configs and text descriptions of configs
or a proliferation of files.

Also with newer SSERIAL devices its quite akward to know what pins are available
except with a live system (or data extracted from one)

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07 Oct 2011 12:46 #13742 by machete
Thank you, but i would like to keep my system with standard software - to be able to upgrade or reinstall EMC in case of HDD destruction.

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07 Oct 2011 15:50 - 07 Oct 2011 15:53 #13755 by machete
Another problem - i'm trying to configure 7i47S connected to P3, but it have absolutely different pin types!!!

File Attachment:


Is it possible to change software pinout in this case?
Last edit: 07 Oct 2011 15:53 by machete.

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07 Oct 2011 16:01 #13756 by PCW
Sure but it requires a custom firmware

if you can say which daughtercard you prefer on each connector
I can make a matching configuration

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07 Oct 2011 16:26 #13757 by machete
My present configuration:

5i20 with 3 flat cables connecting:
P2 -> 7i29+7i29 (4axis)
P3 -> 7i47S (spindle+handwheel+automatics)
P4 -> 7i37TA (automatics)

But it will be better if you can make firmware for configuration like in my first post:
(because of better flat cables tracing)

5i20 with 3 flat cables connecting:
P2 -> 7i37TA (automatics)
P3 -> 7i47S (spindle+handwheel+automatics)
P4 -> 7i29+7i29 (4axis)

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