EDDL (Electronic Device Description Language) is an IEC Standardized language for modeling the behavior of field devices. It enables the EDDL/DDL based host applications to utilize, configure, calibrate, diagnose and troubleshoot the field devices in factory and process automation. EDDL is very powerful and can describe very complex device behavior. EDDL can work with small handheld host or large integrated maintenance system. EDDL is independent of operating and automation system. It enables devices from different suppliers to interoperate with single host and single device to interoperate with various host.