ElmoMC Multi-Axis Motion Controller-Maestro - Manual (Page 87)

5.5.1.2
5.5.2.1
Maestro Software Manual MAXL Program Language
MAN-MASSW (Ver. Q)
Using Labels in the case Statement
Labels that appear after the case keyword cannot also appear outside a switch
statement. (This restriction also applies to the otherwise keyword.) The following
code fragment shows the correct use of case labels:
Syntax
case (expression)
Example:
switch( cmd )
case(1) //begin motion
axis.bg
case(2) // motor On
axis.mo = 1
case(3) // motor Off
axis.mo = 0
otherwise // get motor status
cmd
= axis.ms
end switch
5.5.2 Selection Statements
The MAXL selection statements, if and switch, provide a means to conditionally
execute sections of code.
Syntax
selection-statement :
if ( expression ) statement end [ if]
if ( expression ) statement else statement end [ if]
switch ( expression ) statement end [ switch ]
The MAXL if Statement
The if statement evaluates the expression enclosed in parentheses. The expression
must be an arithmetic type. In both forms of the if syntax, if the expression evaluates
to a nonzero value (true), the statement dependent on the evaluation is executed;
otherwise, it is skipped. In the if...else syntax, the second statement is executed if the
result of evaluating the expression is zero.
Syntax
if ( expression ) statement end [ if]
if ( expression ) statement else statement end [ if]
Example:
if (b == 4 )
if( c == 18 )
a=1 // b is 4; c is 18
else
a=2 // b is 4; c isn`t 18
end if
else
a=3 // b isn`t 4;
end if
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