For Predator, match the baud rates, 7, E, 2 with Software Flow Control and then disable the Program Wait. Set the CNC side up with same baud, 7, E, 2 and XON/XOFF with DC codes.
Test by sending from the CNC, send RS232 button, a part program and receive in the Predator. If this works, send back to the machine. Once you are this far, a new command called Remote will need to be setup like your Mori. It will work perfect.
Need help, give us a call. We sell Predator as well and can help with support.
Greg Mercurio -Shop Floor Automations
www.shopfloorautomations.com /619-461-4000