HEIDENHAIN TNC 430 PA/M - Reset Not (RN)

December 2001 Commands 7 – 101
7.7.18 RESET NOT (RN)
Syntax: RN (RESET NOT)
Operands: M, I, O, T, C
Action:
If the logic accumulator = 0, then set the addressed operand to 0, otherwise
do not change it. Use the RN command at the end of a sequence of logical
gating operations in order to influence an operand independently from the
result of gating. This command can be used several times in succession (see
example).
Example:
Gate input I4 and I5 with OR. If the gating result is 0, then reset output O2 and
marker M500.
Initial state:
Input I4 = 0
Input I5 = 0
Output O2 = ?
Marker M500 = ?
Function STL Accumulator contents [bit] Operand contents [bit]
31..15 ..................... 7 ................. 0
Load the operand
content into the logic
accumulator.
L I4 x ..... x x x x x x x x 0 x x x x x x x 0
Gate the content of
the logic
accumulator and
input I5 with OR
O I5 x ..... x x x x x x x x 0 x x x x x x x 0
Since the result of
the operation is 0,
reset output O2.
RN O2 x ..... x xxxxxxx0xxxxxxx 0
Since the result of
the operation is 0,
reset marker M500.
RN
M500
x ..... x xxxxxxx0xxxxxxx 0