Proposes requirements for hardware and software preconditions to permit exchange of data between an electricity meter and an HHU, via an easily disconnectable optical coupler. The ISO basic reference model ISO 7498 (AS 2777) is augmented by requirements concerning the optical interface, protocol-controlled baud rate switchover, and data transmission without acknowledgement. It proposes the adoption without change of the proposed IEC 1107, Data exchange for meter reading, tariff and load control - Direct local data exchange, which is currently available only as IEC/DIS 1107, document 13(Central Office)1015, May 1991. Copies of document 13(Central Office)1015 may be viewed at or ordered from any Standards Australia office.

To be AS 1284.10