Siemens SINUMERIK 840D sl Programming Manual page 495

Examples of different program sequences in the technology cycle
PROC CYCLE
N10 DEF REAL "value"=12.3
N15 DEFINE ABC AS G01
Both blocks are read over without alarms and without the variable and/or macro being
applied
PROC CYCLE
N10 DEF REAL
N15 DEFINE ABC G01
Both blocks still result in the NC alarm because the syntax is not written correctly.
PROC CYCLE
N10 DEF AXIS "axis1"=XX2
If axis XX2 is not known, alarm 12080 is output. Otherwise the block is overlooked without
alarms and without the variable being applied.
PROC CYCLE
N10 DEF AXIS "axis1"
N15 G01 X100 F1000
N20 DEF REAL"value1"
Block N20 always results in alarm 14500 because the DEF instruction is not permitted after
the first program line.
Job planning
Programming Manual, 03/2006 Edition, 6FC5398-2BP10-1BA0
Motion synchronous actions
10.5 Technology cycles
10-69