Creating zero offset groups
A zero offset group (NPVG) defines the rules to create an NPV, i.e. it describes the components contained in a specific NPV data record. An NPVG is defined in the NC program or by pre-assignment in the channel parameter list [1]-1 in conjunction with a symbolic string. The use of symbolic strings is described in the Section Macros. Three steps are basically required to activate an NPVG:
Programing Example

Creating zero offset groups
1st Step:
Define an NPVG in the NC program, e.g. under the macro name VERSCH_1:
N10 " VERSCH_1 " = " V.G.NP[1].ALL = V.G.NP[2].ALL + V.G.NP[4].ALL "
Or in the channel parameter list [1]-1:
makro_def[0].symbol VERSCH_1
makro_def[0].nc_code V.G.NP[1].ALL = V.G.NP[2].ALL + V.G.NP[4].ALL
2nd Step:
Creating the NPV (new assignment of the NPV1 data record):
N20 " VERSCH_1 "
3rd Step:
Select the NPV (here: NPV1, i.e. G54)
N30 G54