Yaskawa MP900 Series Machine Controller New Ladder Editor - Manual (Page 245)

A.2 Recognizable Expression
A-7
A
A.2.4 Substitution Operator
If it is a difference of the real type or the integer type even if a right, left type is different,
substitution is possible. However, the rounding error is caused when substituting from the
real type to the integer type.
Substitution for the bit type register can do only a logical value (bit type register or true/
false). In the case to substitute the values other than a logical value for the bit type register,
the values are compared with 0 (Or, 0.0), and the truth is converted into the substituted code.
The substitution of the bit type excluding the bit type register is assumed to be impossible.
MW00001 = MW00002 OK
ML00003 = MW00002 OK
MF00006 = MW00002 ∗ 343 OK
MB000010 = MB000011 OK
MW00001 = MF00012 OK
MB000102 = MW00010 OK
MB000102 = true OK
MW00010 = MB000101 NG
MW00010 = true NG
A.2.5 Function
The argument and the return value to the function depend on the specification of controller’s
function. That is, the output value is returned by the integer when the register of the integer
and the integer type is input to sin (), cos (), and atan (), and when the register of the real
number and the real type is input, the output value is returned by the real number. When the
register of the integer type is input because the argument of tan () is a real number, is treated
as a real type.
MW00001 = sin (MW00002) OK
MF00001 = cos (MF00002 ∗ 3.14) OK
MW00001 = − atan(MF00002) OK
A.2.6 Others
„ Parentheses
Two or more expressions can be united by using “(” and “)”.
MW00001 = − ((MW00002 − MW00003) / (MW00004 + MW00005)) OK
EXAMPLE
EXAMPLE
EXAMPLE