DNP3 Group 34 support

[CTaylor]

I have been looking into upgrade pathways for a large deployment of RTUs which are configured in GeoSCADA using the Generic DNP3 driver. 

One thing I have noticed is that a significant amount of the current generation RTUs (including SCADAPack 47x/57x) support DNP Level 4 functionality, however as GeoSCADA does not we are unable to use a number of objects defined in the DNP3 standard - in particular, Group 34 object for AI deadbands.

I am aware that the SCADAPack DNP3 driver does support remote deadbands, however for any other outstations it is not supported.

Please include Group 34 support in the Generic DNP3 driver, and consider adding Level 4 support to the roadmap.

[sbeadle]

Thank you for your suggestion.