July 2013 9.8 Command Set 1777
9.8.19 AND NOT (AN)
Logic processing
with the AND NOT
command
Syntax: AN (AND NOT)
Operands: M, I, O, T, C
Action:
At the beginning of a logic sequence, this command functions like an LN
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 AND NOT. The iTNC saves the result of the
operation in the logic accumulator.
Example:
Gate the inputs I4 and I5 with AND NOT, and assign the result to output O2.
Initial state:
Input I4 = 1
Input I5 = 1
Output O2 = ?
Function STL Accumulator
content
Operand content
Load the operand content
into the logic
accumulator.
L I4 1 1
Gate the content of logic
accumulator and input I5
with AND NOT.
AN I5 0 1
Assign the gating result to
output O2.
= O2 0 0
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