Omron SYSMAC CJ - REFERENCE MANUAL 08-2008 - Page 695

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Double-precision Floating-point Instructions (CS1-H, CJ1-H, CJ1M, or CS1D Only) Section 3-16
Comparing Single-precision and Double-precision Calculations
This example shows the differences in between single-precision and double-
precision calculations when the following vector expressed in polar coordi-
nates is converted to rectangular coordinates A (x,y).
In this example, the 4-digit BCD angle (
θ, in degrees) is read from D00000
and the 4-digit BCD distance (r) is read from D01000.
r = re
j
θ
360
π
Y
0
r
θ
X
r
A (x, y) = A (rcos θ, rsin θ)
000000
BIN
D00000
D00100
BIN
D01000
D01000
SIN
D00200
D00400
COS
D00200
D00300
END
*F
D01200
D00300
D10000
*F
D01200
D00400
D20000
FLT
D00100
D00200
FLT
D01000
D01200
RAD
D00200
D00200
000000
BIN
D00000
D00100
BIN
D01000
D01000
SIND
D00200
D00400
COSD
D00200
D00300
END
*D
D01200
D00300
D10000
*D
D01200
D00400
D20000
DBL
D00100
D00200
DBL
D01000
D01200
RADD
D00200
D00200
• Ladder Program for the
Single-precision Calculation
• Ladder Program for the
Double-precision Calculation