Yaskawa MP900 Series Machine Controller New Ladder Editor - Manual (Page 242)

Appendix A Expression
A.1.2 Operand
A-4
A.1.2 Operand
„ Constant
The constant is either the integer or the real number.
Integer
The integer can use the value within the range which can be expressed by 32 bit integer
value. (-2147483648 to 2147483647)
Real number
The real number can use the value within the range which can be expressed by 32 bit float
type.
± (1.175494351e-38F to 3.402823466e+38F)
„ Variable
In Expression, it is possible to describe by associating the arbitrary variable name permitted
by C language with controller’s register.
Controller’s bit type register is handled as bool type though the bool type variable does not
exist in C language. The bool type variable takes only either of value of true or false. It can
be used only for the logical expression.
The following limitations are installed in the variable name which can be used.
• It is started from characters other than the numerical value.
• The character which can be used is alphabet and underscore “_”, and figures among
ASCII characters.
• The same variable name as the following function names cannot be used.
Abc OK
get_input0 OK
1ab NG
Sin NG
EXAMPLE