AL	Application Layer
DC	Distributed Clock
DCM	Distributed Clock Management
DPRAM	DualPort RAM
EASII	Elmo Application Studio 2
EC	EtherCAT
ENI	EtherCAT Network Information: This XML file describes the whole EtherCAT network. It further describes all information, that is transmitted by the the PDOs.
ESC	EtherCAT Slave Contorller
ESI	EtherCAT Slave Information: This XML file describes a certain slave type. The manufacturer of the slave should provide this file. It is necessary to create the ENI file.
ESM	EtherCAT State Machine
FMMU	Fieldbus Memory Management System
OD	Object Dictionary
PDO	Periodic Data Object: This frame is transmitted periodically (e.g. every millisecond)
PDI	Process Data Interface
SDO	Service Data Object