Mitsubishi Electric M800VW Series Programming Manual page 395

M800V/M80V Series PLC Programming Manual (1/2)
8 Function Instructions
8.11 Special Function Instructions
-1
ATAN, ATANP: TAN operation on floating-point data (single precision)
Setting
Bit devices
data
X Y M L F
S
D
△ : This is not available with ST.
[Instruction symbol] [Execution condition]
ATAN
ATANP
 Setting data
Setting data
TAN value for which the TAN
S
the device where TAN value is stored (real number).
D The first number of the device to store the operation result.
 Functions
ATAN
 Returns the arctangent angle of the TAN value designated by (S) and stores the operation result in the word device desig-
nated by (D).
S+1 S
TAN -1 (
32-bit floating-point real
number
 The angle (operation result) stored at (D) is stored in radian units. For conversion between degrees and radian values, refer
to the RAD and DEG instructions.
 When setting input values from programming tools, rounding errors may occur.
For precautions when setting input values from programming tools, refer to "6.3.4 Single/Double-Precision Real Number
Data".
IB-1501667-B
Usable devices
B SB T SM V T C
○ ○
○ ○
Command
Command
Meaning
-1
(arctangent) value is obtained or the first number of
D+1 D
)
32-bit floating-point real
number
Con-
Word devices
stant
D R/ZR W SW SD Z
○ ○ ○ ○ ○ △
○ ○ ○ ○ ○ △
374
Digit
Pointer designa- Index
tion
E P
○
○
indicates the sign "ATAN".
S D
P S D
Data type
Real number