CARD AND ELECTRONIC MODULE; CHARACTERISTICS: RIO DROP ETHERNET INTERPHASE MODULE; EQUIPMENT: PLC; COMPONENT: ELECTRONIC MODULE; PROPORTION OF I/O EXPLORATION SERVICES OF REMOTE I/O DEVICES, WHETHER IN REMOTE I/O NETWORKS OR IN NETWORKS OF REMOTE I/O DEVICES WITH REMOTE I/O OR I/O DISTRIBUTED. THE MODULE CONNECTS DIRECTLY TO THE MAIN RING OF THE REMOTE I/O NETWORK AND CONTROLS THE REMOTE I/O NETWORK THROUGH A DAISY CHAIN LOOP TOPOLOGY. THIS MODULE PROVIDES VARIOUS ETHERN ET SERVICES, SUCH AS CONFIGURATION FOR REMOTE E/S DEVICES AND DIAGNOSTICS.