User5803443, Note that the standard controlCARD and the isolated controlCARD are different with respect to the standard controlCARD includes a transceiver while the isolated controlCARD does not. Please see the Info-Sheet for each in C2000Ware at: C:\ti\c2000\ C2000Ware _ \boards\controlCARDs\ TMDSCNCD28035 \R1_2\F2803xcontrolCARD_InfoSheet.pdf C:\ti\c2000\ C2000Ware _ \boards\controlCARDs\ TMDSCNCD28035ISO \F28035_ISOcontrolCARD_InfoSheet.pdf In the standard controlCARD Info-Sheet see the SW1 settings on page 2. I suggest trying to get everything working using the FTDI UART channels (via USB cables). This will prove that the software is working as expected. Then after you have this working, you can experiment with a working system that does not use the FTDI channels, but you will probably still need to have the transceivers. (It might be better if you had two standard controlCARDs since both will have the transceivers). When using the FTDI channels you will need to the USB on the Docking Station for the standard controlCARD, while making sure that the proper switches are set correctly on the controlCARD and making sure the need jumpers are in placed on the Docking Station. For the Docking Station, see: C:\ti\c2000\ C2000Ware _ \boards\ExperimenterKits\DockingStation_DIM_100pin\R3\USBDockingStation_Schematic_[R3].pdf Note the use of the Docking Station jumper J9. Please see: e2e.ti.com/.../665480 For the isolated controlCARD you will need to use the USB on the controlCARD, while making sure that the proper switches are set correctly. It might be useful to have an oscilloscope available to make sure the signal is progressing through the signal chain. I hope this helps. If this answers your question, please click the green "Verified Answer" button. Thanks. - Ken
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