Request custom bitfile: 5i25 + 7i77 (P3) + 7i74 (P2) with pktUART for Modbus

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29 Jun 2026 14:19 - 29 Jun 2026 14:27 #347391 by umerov
I am retrofitting an old Morbidelli CNC woodworking machine. My old setup used analog 0-10V to control the spindle inverter, but I would like to switch to Modbus RTU using an unused channel on my 7I74 card.

I checked the standard Mesa firmware archive but couldn't find a bitfile with the pktUART module for this exact hardware combination. Could PCW or someone else kindly compile a custom bitfile for me with 1 or 2 channels of pktUART on the 7I74, leaving the rest as standard SSerial?

My current hardware configuration is:
5I25 (P3) -> 7I77
5I25 (P2) -> 7I74
  • 7I74 (Channel 0) -> 7I84 (inputs/outputs)
  • 7I74 (Channel 1) -> 7I70 (inputs)
  • 7I74 (Channel 2) -> 7I71 (outputs)
I need channels 0, 1, and 2 to remain SSerial for my existing expansion boards. If channel 6 (or 6 and 7) could be configured as pktUART for the Modbus VFD, that would be perfect!
Thanks in advance for the help!
Last edit: 29 Jun 2026 14:27 by umerov.

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