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7 OPERATION CONTROL PROGRAMS
F/FS G
7.6.6 Arctangent : ATAN
Format ATAN(S) Number of basic steps 2
[Usable data]
Usable Data
Word device Constant
Setting
data
Bit device
16-bit
integer
type
32-bit
integer
type (L)
64-bit
floating
point
type (F)
Coasting
timer
16-bit
integer
type (K/H)
32-bit
integer type
(K/H, L)
64-bit
floating
point
type (K)
Calculation
expression
Bit
conditional
expression
Comparison
conditional
expression
(S) —
— —
: Usable
[Setting data]
Setting data Description Data type of result
(S)
TAN value data on which TAN
-1
(arctangent)
operation will be performed
Floating-point type
[Functions]
(1) TAN
-1
(arctangent) operation is performed on the TAN value data specified with
(S) to find an angle.
(2) The operation result is in an angle (degree) unit.
(3) If (S) is an integer type, it is converted into a floating-point type before operation is
performed.
[Errors]
(1) An operation error will occur if:
• (S) is an indirectly specified device and its device No. is outside the range.
[Program examples]
(1) Program which performs the TAN
-1
(arctangent) operation of D0F and substitutes
the result to #0F
#0F = ATAN(D0F)
#3 #2
45.0
#1 #0
D3 D2
1.0
D1 D0