HEIDENHAIN MANUALplus 620 Technical Manual page 1682

8.15.20 OR (O)
Logic processing
with the OR
command
1682
Syntax: O (OR)
Operands: M, I, O, T, C
Action:
At the beginning of a logic sequence, this command functions like an L
command, i.e., the logical state of the operand is loaded into the logic
accumulator. You should always begin a sequence of logical gating
operations with a load command (see L, LN, L–).
Within a logic sequence, gate the content of the logic accumulator and the
logical state of the operand with OR. The control saves the result of the
operation in the logic accumulator.
Example:
Gate the inputs I4 and I5 with OR, and assign the result to output O2.
Initial state:
Input I4 = 0
Input I5 = 1
Output O2 = ?
Function
Load the operand content
into the logic
accumulator.
Gate the content of the
logic accumulator and
input I5 with OR.
Assign the gating result to
output O2.
STL Accumulator
content
L I4 0
O I5 1
= O2 1
HEIDENHAIN Technical Manual MANUALplus 620
Operand content
0
1
1