I see the 7i93 includes UART functionality.
I have been troubled by the VFD's RS485 Modbus link. I had to strap a second
cable solution onto my PC just for that.
RS485 4-wire transceiver control signals out of the card would be great, but a
UART that just has Rx/Tx with no RS485 protocol would
LinuxCNC 2.7.10 is out. This one's a relatively boring stable release.
A few minor bugs have been fixed, but the real highlights are:
* full support for Debian Stretch (uspace realtime with RT-Preempt)
* support for Mesa 7i93 Hostmot2 Ethernet board
* support for Huanyang GT-series VFDs
