The safe decision. productnews The new communication modules enable the programming of the CPUs with ELOP II via Ethernet. These are used with the CPUs which are also new: F 8650X/F 8652X (safe CPU for H51q/H41q systems) F 8651X/F 8653X (non-safe CPU for H51q/H41q systems) The already existing communication modules F 8627 and F 8628