Zero offset group (np_grp[i].*)
A zero offset group compiles zero offsets which are selected when one of the G functions 'G53' - 'G59' or 'G159' is programmed.
| Structure name | Index | 
| np_grp[i] | i = 0 ... 96 (number of zero offset groups: 97, application-specific) | 
Notice

The following relationship exists between the G function and zero 
offset group index 'i':
| G function | Select using G159 | Zero  | 
| G53 or | G159 = 0 | 0 | 
| G54 or | G159 = 1 | 1 | 
| G55 or | G159 = 2 | 2 | 
| G56 or | G159 = 3 | 3 | 
| G57 or | G159 = 4 | 4 | 
| G58 or | G159 = 5 | 5 | 
| G59 or | G159 = 6 | 6 | 
| 
 | G159 = 7 | 7 | 
| 
 | G159 = 8 | 8 | 
| 
 | G159 = 9 | 9 | 
| 
 | G159 = 10 | 10 | 
| 
 | : | : |