Yokogawa EB401-10 ER Bus Interface Master Module in StockYokogawa EB401 10 ER Bus Interface Master Module The Yokogawa EB401 10 is designed as an ER Bus Interface Master Module facilitating connectivity between Yokogawa ER Bus devices and a Yokogawa FCU (Field Control Unit). It is compatible for installation in the odd numbered slot of an ANB10 or AFF50 FCU. Key Features: Supports connection for up to 4 branches of ER Bus devices, with each branch accommodating up to 127 devices. Compatible with multiple ER