Does 5i25 do RS485

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16 Oct 2021 01:24 #223266 by btvpimill
Does 5i25 do RS485 was created by btvpimill
Just trying to figure out if 5i25 can be configured to talk to RS485 stuff directly. Specifically a spindle control. The 5i25 seems like such a capable device, with such awesome features, it seems like doing RS485 from 2 I/O pins must be an option?

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16 Oct 2021 01:30 #223267 by PCW
Replied by PCW on topic Does 5i25 do RS485
There is a FPGA UART device that supports RS-485 line turnaround but it is not fully supported by the LinuxCNC driver so doing things like Modbus would be awkward.

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16 Oct 2021 11:00 #223290 by btvpimill
Replied by btvpimill on topic Does 5i25 do RS485
Thank you Peter.

So the easy answer is no, not without a lot of hacking?

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18 Oct 2021 22:24 #223504 by andypugh
Replied by andypugh on topic Does 5i25 do RS485

Thank you Peter.

So the easy answer is no, not without a lot of hacking?
 

Without _some_ hacking, no. 

Here is an example of the sort of hacking needed, a sample component for a fictional UART-controlled device:
github.com/LinuxCNC/linuxcnc/blob/master...ivers/mesa_uart.comp

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