EasyManuals Logo

Haas VF Series Operator's Manual

Haas VF Series
564 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #379 background imageLoading...
Page #379 background image
37996-8000
MACROS
June 1999
Conditional Branch (IF and GOTOn)
Conditional branching allows the program to transfer control to another section of code within the same subrou-
tine. Conditional branching can only be used when macros are enabled. The HAAS control allows two similar
methods for accomplishing conditional branching.
IF [<conditional expression>] GOTOn
Here, as discussed above, <conditional expression> is any expression that uses the six Boolean operators
EQ, NE, GT, LT, GE, or LE. The brackets surrounding the expression are mandatory. In the HAAS control, it is
not necessary to include these operators. For example:
IF [#1 NE 0.0] GOTO5;
could also be:
IF [#1] GOTO5 ;
In this statement, if the variable #1 contains anything but 0.0, or the undefined value #0, then branching to
block 5 will occur; otherwise, the next block will be executed. If portability to a control other than HAAS is
desired, then it is recommended that the conditional operators be used.
In the HAAS control, a conditional expression can also be used with the M99 Pnnnn format, providing that
macros have been enabled. An example is as follows:
G0 X0 Y0 [#1EQ#2] M99 P5;
Here, the conditional is for the M99 portion of the statement only. The machine tool is instructed to X0, Y0
whether or not the expression evaluates to TRUE or FALSE. Only the branch, M99, is executed based on the
value of the expression. It is recommended that the IF GOTO version is used if portability is desired.
Conditional Execution (IF THEN)
Execution of control statements can also be achieved by using the IF THEN construct. The format is:
IF [<conditional expression>] THEN <statement>;
Note: To preserve compatibility with FANUC syntax "THEN" may not be used with
GOTOn.

Table of Contents

Other manuals for Haas VF Series

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Haas VF Series and is the answer not in the manual?

Haas VF Series Specifications

General IconGeneral
Machine TypeVertical Machining Center
ControlHaas CNC Control
Z-Axis Travel20-30 inches (varies by model)
Y-Axis Travel16 - 30 inches (varies by model)
Spindle Motor20-30 hp (depending on model)
Tool Capacity20-40 tools (varies by model)

Related product manuals