@c0fec0de E/N stands for the parity as Even or None. In your case there might be a small bug in the firmware so the meaning might be switched. So Up can be None and Down can be Even. The same is for the speed settings.

You should set both to different addresses and then set 19.2/9.6 DOWN (On) and E/N UP(off) restart it (power cycle) and you should be able to communicate using 19200 without parity.