Not Equal (<>) - HEIDENHAIN iTNC 530 HSCI Technical Manual

9.8.36 NOT EQUAL (<>)
1798
<> (NOT EQUAL)
Syntax:
B, W, D, K
Operands:
Action:
This command sets off a direct transition from word to logical processing.
Compare the content of the word accumulator with the content of the
addressed operand. If the word accumulator and the operand are not equal,
the condition is true and the iTNC sets the logic accumulator to 1. If they are
equal, the logic accumulator is set to 0. The comparison takes place over the
number of bits corresponding to the operand:
where B = 8 bits, W = 16 bits, and D = K = 32 bits.
Example:
Compare a constant with the content of double word D8, and assign the result
to marker M500.
Initial state:
Constant = 16 000 (dec)
Double word D8 = 15 000 (dec)
Marker M500 = ?
Function
Load the constant into the
word accumulator.
Check whether word
accumulator <> operand;
if so, set logic
accumulator to 1.
Assign the result to
marker M500.
STL Accumulator
content
L 16000
K16000
<> D8 1
= M500 1
HEIDENHAIN Technical Manual iTNC 530 HSCI
Operand content
15000
1