And [] (A[]) - HEIDENHAIN TNC 426 PB/M Technical Manual

Table of Contents

7.7.38 AND [ ] (A[ ])

A[ ] (AND [ ])

By using parentheses you can change the sequence of processing logic

commands in a statement list. The opening-parenthesis command puts the

content of the accumulator onto the program stack. If you address the logic

accumulator in the last command before an opening-parenthesis statement,

the TNC puts the content of the logic accumulator onto the program stack.

When you address a word accumulator, the TNC saves the content of the

word accumulator. With the closing-parenthesis command, the TNC gates the

buffered value from the program stack with the content of the logic

accumulator or word accumulator, depending on which you have addressed

before the opening-parenthesis statement. The TNC assigns the result of the

gating operation to the corresponding accumulator. Maximum nesting depth:

16 parentheses.

Please note:

The sequence of function is the same for word processing, however, the TNC

writes the complete word accumulator onto the program stack.

Example for the commands AND [ ], AND NOT [ ], OR [ ], OR NOT [ ],

EXCLUSIVE OR [ ], EXCLUSIVE OR NOT [ ]:

Use parentheses to develop a statement list in accordance with the following

logic circuit diagram:

HEIDENHAIN Technical Manual TNC 426, TNC 430