HNZ denotes a number of national standards, defined by the EDF (ELECTRICITE DE FRANCE), such as:
The standard does not define an application layer.
Actual implementations - though in a simplified form - are available for instance from CEGELEC (see also HN Z 66-S-11/15, T63).
HN Z 66 S 11/15, T63, Master
HN Z 66 S 11/15, T63, Slave
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Products: ipConv Protocol Stacks: DNP V3.00, Slave DNP V3.00, Master HN Z 66 S 11/15, T63, Slave HN Z 66 S 11/15, T63, Master