IEC-870-5-102 for REE Spanish Electric meters
Based on http://www.ree.es/sites/default/files/01_ACTIVIDADES/Documentos/Documentacion-Simel/protoc_RMCM10042002.pdf and http://www.ree.es/sites/default/files/01_ACTIVIDADES/Documentos/Documentacion-Simel/AMPLIACION%20DEL%20PROTOCOLO%20Fase%202%202003-02-10.pdf
TODO
Work in progress. Nothing implemented yet.