Locking of program areas for block search

For block search in NC program any program areas can be locked by the command #BLOCKSEARCH LOCKED/RELEASED. If the start position of block search is located in one of this restricted areas, the error message P-ERR-21399 is output.

The block search lock also includes all local and global sub program calls of the corresponding area.

For nested locked areas the block search lock includes the area beginning from the first activation to the first deactivation (see example 2).

For further information to block search see the documentation [FCT-C6].

#BLOCKSEARCH LOCKED | RELEASED  (modal)

Programming examples

Example 1:

In the program area N40–N100 and all included sub programs for block search no start position may be selected.

%BLOCKSEARCH 
N10 X0 Y0 Z0 
N20 X10 
N30 Y10 
N40 #BLOCKSEARCH LOCKED 
N50 X20 
N60 Y20 
N65 L GSP.nc 
N70 Z20 
N80 X30 
N90 Z30 
N100 #BLOCKSEARCH RELEASED 
N110 Y30 
N120 X40 
N130 Z40 
N999 M30

Example 2:

For the following nested areas the block search lock includes N40-N75.

%BLOCKSEARCH 
N10 X0 Y0 Z0 
N20 X10 
N30 Y10 
N40 #BLOCKSEARCH LOCKED 
N50 X20 
N55 #BLOCKSEARCH LOCKED 
N60 Y20 
N65 L GSP.nc 
N70 Z20 
N75 #BLOCKSEARCH RELEASED 
N80 X30 
N90 Z30 
N100 #BLOCKSEARCH RELEASED 
N110 Y30 
N120 X40 
N130 Z40 
N999 M30 
See also