Re:5i20 + 7i52s + 7i37TA -> change the IO Pins

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14 Sep 2017 03:22 - 14 Sep 2017 03:23 #98929 by PCW
Yeah, they are the same cards, just different parts soldered,
I can dig up the schematics tomorrow and post them here

Pretty sure you can make one that's part 7I52 and part 7I52S (sserial and step/dir)
Last edit: 14 Sep 2017 03:23 by PCW.

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14 Sep 2017 13:53 - 14 Sep 2017 13:53 #98946 by PCW
7I52 schematics:
freeby.mesanet.com/7i52schem.zip

Note that the RS-422 driver chips we use are ISL32174s which have full 5V output swings
(dont use DS34C87s)
Last edit: 14 Sep 2017 13:53 by PCW.

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14 Sep 2017 18:52 - 14 Sep 2017 18:53 #98964 by neodym
Thanks for the files. They helped me a lot. When looking at the board I noticed that no RX-IC are equipped. This I found strange, as they would have to be equipped according to the circuit diagram. By chance I noticed a sticker on the back of the board with the inscription (7i52S-ROHS). I was probably confused by the inscription on the front.
I would now have to fill a missing RX-IC (U12= MAX3094) and exchange the corresponding TX-IC (U11= ISL32174s).
Is it correct that way? Probably I need for it still a adapted firmware?

Attachments:
Last edit: 14 Sep 2017 18:53 by neodym.

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19 Sep 2017 07:28 - 19 Sep 2017 07:30 #99116 by neodym
I just wanted to ask again, if my plan is so ok? (Replace circuits) I need only a suitable firmware so that U11 and U12 are addressed as Sseriel. I would be a PI_XXX.vdh suffice, since I can compile the .bit file now itself. When changing the .vdh I do something difficult.
A finished .bit file from the developer itself would be perfect.
( 6xEncoder; COM1,2,4=Step/Dir; COM5=Pwm/Dir; COM0,3=Sseriel [U11+U12] )

Many thanks for the help
Michael
Last edit: 19 Sep 2017 07:30 by neodym.

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19 Sep 2017 16:13 #99123 by PCW
Yes basically, making a new configuration consists of making a new PINXXX.vhd file (usually just copy pasting from existing files) and adding it to the project, and then compiling

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19 Sep 2017 20:22 #99138 by neodym
Hi Peter,
I do not get it but without help. I do not understand the structure of this file. Many attempts have failed when compiling. :S

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26 Sep 2017 05:02 #99441 by andypugh
Can you show us the file?

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26 Sep 2017 18:10 #99476 by neodym

Can you show us the file?


Of course. After much trial and error I succeeded in compiling my own bitfile. However with very many warnings (See attachement).
Linuxcnc starts with this bitfile. PWMGEN and STEPGEN also generate correct signals. SSERIAL I could not test yet. I still lack the ICs for the exchange on the 7i52s.

Content of the appendix:
PIN_WEILER160_CNC.bit
PIN_WEILER160_CNC.vhd
readhmid.txt
WARNINGS.txt

File Attachment:

File Name: 7i52mod.zip
File Size:134 KB
Attachments:

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27 Sep 2017 01:42 #99497 by andypugh
That does seem to be a lot of warnings, but they are all warnings rather than errors, so it looks like the compile worked.

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27 Sep 2017 05:33 #99503 by neodym
Whether the warnings can have an impact on the result can only be answered by the Peter.

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