Nov 14, 2017
01:54 AM
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Nov 14, 2017
01:54 AM
Hello,
I need to connect several XMC4800 on the same board and it would be great to only have two PHY chips, at the beginning and at the end of the Ethercat chain.
It seems it can be done, page 33: https://download.beckhoff.com/download/document/io/ethercat-development-products/ethercat_esc_datash...
I wired two relax boards in that way, but it doesn't work right now. I can provide details if needed.
- Is it supposed to work, or is there something basic that prevents it?
- Does the driver code needs to be changed? Following Beckhoff recommendation I set enable_enhanced_link_p1 : 0; in xmc_ecat.h and TX shift to 10 ns in DAVE ESC app. Is it enough?
- Any hint on how to debug this circuit?
Best regards.
Alberto
I need to connect several XMC4800 on the same board and it would be great to only have two PHY chips, at the beginning and at the end of the Ethercat chain.
It seems it can be done, page 33: https://download.beckhoff.com/download/document/io/ethercat-development-products/ethercat_esc_datash...
I wired two relax boards in that way, but it doesn't work right now. I can provide details if needed.
- Is it supposed to work, or is there something basic that prevents it?
- Does the driver code needs to be changed? Following Beckhoff recommendation I set enable_enhanced_link_p1 : 0; in xmc_ecat.h and TX shift to 10 ns in DAVE ESC app. Is it enough?
- Any hint on how to debug this circuit?
Best regards.
Alberto
- Tags:
- IFX
4 Replies
Nov 24, 2017
05:38 AM
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Nov 24, 2017
05:38 AM
Hi Alberto,
It should be possible. Are you using TwinCAT as EtherCAT master? Does it recognize the first slave in the chain?
Regards,
Jesus
It should be possible. Are you using TwinCAT as EtherCAT master? Does it recognize the first slave in the chain?
Regards,
Jesus
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May 11, 2018
02:27 AM
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May 11, 2018
02:27 AM
May 17, 2018
05:06 AM
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May 17, 2018
05:06 AM
Thank you for your effort, My tests were unsuccessful and the project proceeded with a standard two PHY setup.
Maybe in a next release we will try again.
Thanks again
Alberto
Maybe in a next release we will try again.
Thanks again
Alberto
May 18, 2018
12:18 AM
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May 18, 2018
12:18 AM
Un unrelated question: what is the purpouse of the NC7SZ125M5X buffer on the PHY_RST of the Relax Board?
Best regards.
Alberto
Best regards.
Alberto