Call Module If Logic Accumulator = 0 (Cmf) - HEIDENHAIN TNC 426 PB/M Technical Manual

7.7.71 CALL MODULE IF LOGIC ACCUMULATOR = 0 (CMF)

Function
Load the operand
content into the logic
accumulator.
If logic accumulator
=0, jump to LBL 10.
Resume main
program after
module execution.
End of the main
program.
Label: Beginning of
module.
Statement in the
module.
Statement in the
module.
Statement in the
module.
End of module,
resume the main
program with the
command L M100.
7 – 146
Syntax: CMF (CALL MODULE IF FALSE)
Operands: Label (LBL)
Action:
The CMF command is a conditional module call. If the logic accumulator = 0,
the TNC calls the module that begins at the label that you have entered. If the
logic accumulator = 1, the TNC does not call the module. CMF interrupts a
logic sequence.
Example:
This example also applies to the commands CM and CMT.
Depending on the state of the input I5, call the Module 10. Initial state:
Input I5 = 0
STL Accumulator contents [bit]
31..15 ..................... 7 .................. 0
L I5 x ..... x x x x x x x x 0 x x x x x x x
CMF 10 x ..... x x x x x x x x 0 x x x x x x x
L M100 x ..... x x x x x x x x 1 x x x x x x x
EM
LBL 10
L I3 x ..... x x x x x x x x 0 x x x x x x x
O M500 x ..... x x x x x x x x 1 x x x x x x x
= O20 x ..... x x x x x x x x 0 x x x x x x x
EM
HEIDENHAIN Technical Manual TNC 426, TNC 430
Operand contents [bit]
0
1
0
1
0