PCD7.Lx00 doesn't respond anymore!

The RIO modul PCD7.L100 / L 200 doesn't respond. It is frozen , all the LED are switch off and it doesn't communicate anymore! After a powerup the RIO communicates again properly. This phenomenon occurs in an enironment with electronmagnetic noises. The very new PCD7.Lx00 have a filter which cures that problem. If it isn't possible to reduce the noises, try to change the PCD7.Lx00 module, the new one should be at least of the version S 18 (stamp on the modul).