% Dois problemas:
% - Dois numeros de pagina
% - Centrar o numero de pagina

\setuplayout[
% leftmargin=5.6cm,leftmargindistance=0.4cm,
                   rightmargin=5.6cm,rightmargindistance=1.0cm,
                   topspace=1.3cm,headerdistance=0.2cm,header=1.5cm,
                   footerdistance=0.2cm, footer=1.3cm,
                   height=middle, width=10.4cm]

\showframe

\setupfootertexts[][\setups{t_footer}]

\startsetups[t_footer]
  \setupbodyfont[10pt]
  \rightaligned{\pagenumber}
\stopsetups

\setuppagenumbering[location={footer}]

\starttext

\page
Teste.

\stoptext