device used to read ERI data directly or indirectly from an ERT by invoking ERI transactions

NOTE 1 to entry In the case that an ERI reader exchanges the ERI protocol data units directly via a data link with an ERT it is also called an ERR. In case it communicates via one or more nodes, only the last node in this sequence is called an ERR. As a consequence, an external ERI reader can, depending on the onboard configuration for example, act for some, but not all, vehicles as an ERR.

NOTE 2 to entry See also onboard ERI reader and external ERI reader.