M800V/M80V Series PLC Programming Manual (1/2)
8 Function Instructions
8.11 Special Function Instructions
TAN, TANP: 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]
TAN
TANP
Setting data
Setting data
Angle data for which the TAN (tangent) value is obtained or the first number of the
S
device where angle data is stored.
D
The first number of the device to store the operation result.
Functions
TAN
Returns the TAN (tangent) value of the angle designated by (S) and stores the operation result in the device number desig-
nated by (D).
S
+
1
S
TAN(
32-bit floating-point real
number
Angles designated by (S) are set in radian units (degrees x π / 180). For conversion between degrees and radian values,
refer to the RAD and DEG instructions.
When angles designated by (S) are π/2 radians, or (3/2)π radians, note that because an arithmetic error occurs in the
radian value, an error will not occur.
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
D+1
D
)
32-bit floating-point real
number
Con-
Word devices
stant
D
R/ZR W SW SD
Z
○
○
○
○
○
△
○
○
○
○
○
△
362
Digit
Pointer
designa-
Index
tion
E
P
○
○
indicates the sign "TAN".
S
D
P
S
D
Data type
Real number