It seems that you have encountered those parity errors which dog the DNC RS232 communications; especially for Okuma. At our place, we use Predator throughout the shop, so we do not actually need to go back and forth between the DNC computer control for sending and receiving programs. Are you getting a parity error so that we see what's actually going on?
All men dream-but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find that it was vanity: but the dreamers of the day are dangerous men, for they may act their dream with open eyes, to make it possible.