Renishaw NC1 Programming Manual page 44

Tool length setting
L9862
M30
A different tool edge offset can be set by using the R14=t input on the
call line as follows:
R02=1.R14=2.R19=4000.
L9862
Tool length setting – off-centre tool
Assume the tool is 80mm (3.15in) diameter.
%_N_????
T1
M6
L9800
R02=1.R25=38.R19=800. Set tool offset (1) at 38 mm (1.496 in)
L9862
M30
42
Set tool offset edge D2 on centre.
Controlled rev/min.
radial step-over. Controlled rev/min.