Heidenhain iTNC 530 (340 420) User Manual download pdf (Page 412)

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101

384 10 Programming: Q Parameters

10.6 If-Then Decisions with Q Parameters

10.6 If-Then Decisions with Q

Parameters

Function

The TNC can make logical If-Then decisions by comparing a

Q parameter with another Q parameter or with a numerical value. If

the condition is fulfilled, the TNC continues the program at the label

that is programmed after the condition (for information on labels, see

“Labeling Subprograms and Program Section Repeats,” page 362). If

it is not fulfilled, the TNC continues with the next block.

To call another program as a subprogram, enter PGM CALL after the

block with the target label.

Unconditional jumps

An unconditional jump is programmed by entering a conditional jump

whose condition is always true. Example:

FN9: IF+10 EQU+10 GOTO LBL1

Programming If-Then decisions

Press the SPRÜNGE soft key to call the if-then conditions. The TNC

then displays the following soft keys:

Function Soft key

FN9: IF EQUAL, JUMP

Example: FN9: IF +Q1 EQU +Q3 GOTO LBL 5

If the two values or parameters are equal, jump to the

given label.

FN10: IF NOT EQUAL, JUMP

Example: FN10: IF +10 NE –Q5 GOTO LBL 10

If the two values or parameters are not equal, jump to

the given label.

FN11: IF GREATER THAN, JUMP

Example: FN11: IF+Q1 GT+10 GOTO LBL 5

If the first parameter or value is greater than the

second value or parameter, jump to the given label.

FN12: IF LESS THAN, JUMP

Example: FN12: IF+Q5 LT+0 GOTO LBL 1

If the first value or parameter is less than the second

value or parameter, jump to the given label.

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Heidenhain iTNC 530 (340 420) User Manual Page 412

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