Siemens SINUMERIK 840D sl Programming Manual page 72

Flexible NC programming
1.4 Comparison and logic operations
Examples
Example 1: Relational operators
IF R10>=100 GOTOF DEST
or
R11=R10>=100
IF R11 GOTOF DEST
The result of the R10>=100 comparison is first buffered in R11.
Example 2: Logic operators
IF (R10<50) AND ($AA_IM[X]>=17.5) GOTOF DESTINATION
or
IF NOT R10 GOTOB START
NOT only refers to one operand.
Example 3: Bit-by-bit logic operators
IF $MC_RESET_MODE_MASK B_AND 'B10000' GOTOF
72
ACT_PLANE
Programming Manual, 06/2009, 6FC5398-2BP20-0BA0
Job Planning