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Bunker Hill, IL | I’m trying to set up a 4640 universal display in a 7R with a 4600 armrest display, a V2 server, and Ag Leader GPS 7500.
I’m sending NMEA out from the SteerCommand Z2 to the server COM port 1 with a 19200 baud rate(also tried 38400), and the GSA, GGA, and RMC messages at 5hz(also tried 1hz and 10hz each).
If I disable the second display and go to just the 4600, I get good signal communication. But when I enable the add-on display as primary, it does not recognize the serial gps in any way.
What do I need to be changing to get this to show up in the 4640?
Edited by Fly-N-Farm 7/31/2026 16:02
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 IMG_4177 (full).jpeg (149KB - 21 downloads)
IMG_4371 (full).jpeg (62KB - 20 downloads)
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Serial GPS to Deere 4640 universal add-on
