Mitsubishi Electric Q172CPU - Page 299

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7 MOTION PROGRAMS FOR POSITIONING CONTROL
(5) Functions (SQRT, ABS, LN, EXP)
The data type combinations and conversion methods for functions (SQRT, ABS,
LN, EXP) are shown below.
Operation result = function [Data 1]
Function indicates SQRT, ABS, LN or EXP
Internal operation of SQRT, LN or EXP is performed with the 64-bit floating-point
type.
Internal operation of ABS is performed by making conversion into the operation
result type.
When there is operation in Data 1 for SQRT, operation is performed after
conversion into 64-bit data.
• For SQRT, LN, EXP
No. Operation result Data 1
1
#n (16 bit)
16-bit data is converted into 64-bit data.
2
#nL, #n:L (32 bit)
32-bit data is converted into 64-bit data.
3
#n (16 bit)
Internal operation result (64 bit) is converted into 16-bit
data.
Fractional portion is dropped during conversion.
Error occurs if operation result exceeds 16-bit range.
(Error : 531)
#nF, #n:F (64 bit)
No conversion
4
#n (16 bit)
16-bit data is converted into 64-bit data.
5
#nL, #n:L (32 bit)
32-bit data is converted into 64-bit data.
6
#nL, #n:L (32 bit)
Internal operation result (64 bit) is converted into 32-bit
data.
Fractional portion is dropped during conversion.
Error occurs if operation result exceeds 32-bit range.
(Error : 531)
#nF, #n:F (64 bit)
No conversion
7
#n (16 bit)
16-bit data is converted into 64-bit data.
8
#nL, #n:L (32 bit)
32-bit data is converted into 64-bit data.
9
#nF, #n:F (64 bit)
No conversion
#nF, #n:F (64 bit)
No conversion
n : Indicates variable number or device number