Configuration Question Digi One SP

Hello All,

Currently I have an RS-422 add in card attached to an OPTO-22 PB8H Rack Header with a B1 brain board. As certain events occur, the appropriate I/O module is activated and the data is sent to the PC via RS-422 card. This process needs to move to a PC that does not have enough expansion slots so I am trying to move all of my serial communications to Digi One SP’s. I know the problem is due to the fact that the communication is starting with the RS-422 device and not the PC. I have turned on the custom role configuration of the Digi One SP and specified the destination IP but it did not work. Any ideas and assistance would be greatly appreciated.