And (A) - HEIDENHAIN iTNC 530 HSCI Technical Manual

9.8.18 AND (A)

Logic processing
with the AND
command
July 2013
A (AND)
Syntax:
M, I, O, T, C
Operands:
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. This is to ensure compatibility with the TNC 355, which does
not have the special L command. In PLC programs, a sequence of logical
gating operations should always be started 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. The iTNC saves the result of the
operation in the logic accumulator.
Example:
Gate the inputs I4 and I5 with AND, and assign the result to output O2.
Initial state:
Input I4 = 1
Input I5 = 0
Output O2 = ?
Function
Load the operand content
into the logic
accumulator.
Gate the content of the
logic accumulator and
input I5 with AND.
Assign the gating result to
output O2.
9.8 Command Set
STL Accumulator
content
L I4 1
A I5 0
= O2 0
Operand content
1
1
0
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