GSK 980TDi, Руководство пользователя

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GSK980TDi Turning CNC System User Manual
178
Ⅰ
Programming
When the variable #1 is more than 10, the system transfers to the block which serial
number is N2.
N2 G00 X10.0;
THEN format: IF[conditional expression]THEN<macro program statement >;
When the condition expression is valid, the system executes only one statement following THEN.
Example: IF[#1 EQ #2] THEN #3=0;
When #1 value is equal to the #2, 0 is assigned to the variable #3; when they are not equal, the
system orderly executes the followings instead of the assignment statement after THEN.
Conditional expression: the conditional expression must include the conditional operator, two
sides of conditional operator can be variable, constant or expression, and it must be closed with the
brackets ‘[’ ‘]’.
Conditional operator: the system uses the conditional operators listed in the following table.
Conditional operator Meaning
EQ or = = Equal to (=)
NE or <> Not equal to ( ≠ )
GT or > More than (>)
GE or >= More than or equal to ( ≥ )
LT or < Less than (<)
LE or <= Less than or equal to ( ≤ )
Example: IF[3<>2]GOTO 2; its meaning: when 3 is not equal 2, the system skips to N2 block;
IF[#101>=7.22]THEN #101=SIN30; its meaning: when #101 is more than or equal to
7.22, the system executes the assignment after THEN. i.e. the sine value of 30 degree
is assigned to the variable #101.
Typical program: the following program counts the sum of the integer 1~10.
3) Cycle (WHILE statement)
Specify one conditional expression after WHILE. When the specified conditional is valid, the
system executes the blocks between DO and END; otherwise, the system skips to the block after
END.
Example:
O9500
#1=0
；
… …the sum is initialized to be 0
#2=1
；
… …the summand number is initialized to be 1
N1 IF[#2 GT 10]GOTO2 ； … … the system skips to N2 when the summand is more than 10
#1= #1+#2
；
… …count the sum of two numbers
#2= #2+1 ； … … the summand adds 1
GOTO1
；
… … unconditionally skip to the block N1
N2 M30
；
… … end of program
Program
IF [#1GT10] GOTO2;
If the condition
is not met.
If the condition
is met.