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7-259
TAN(P)
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7.12 Special function instructions
7.12.5 TAN operation on floating-point data (Single precision) (TAN(P))
Operation Error
(1) In any of the following cases, an operation error occurs, the error flag (SM0) turns ON, and
an error code is stored into SD0.
• Operation results are outside the range shown below:
0, 2
-126
|operation result| 2
128
(For the Basic model QCPU, High Performance model QCPU, Process CPU, Redundant
CPU) (Error code: 4100)
• The value of the specified device is 0.
*3
(For the Basic model QCPU, High Performance model QCPU, Process CPU, Redundant
CPU) (Error code: 4100)
*3: There are CPU modules that will not result in an operation error if 0 is specified. For details, refer to 3.2.4.
• The result exceeds the following range (Operation results in an overflow)
(For the Universal model QCPU only)
2
128
| Operation result | (Error code: 4141)
• The value of the specified device is 0, unnormalized number, nonnumeric, and ± .
(For the Universal model QCPU only) (Error code: 4140)
Program Example
(1) The following program performs a TAN operation on the angle data set by the 4 BCD digits
from X20 to X2F, and stores the results as 32-bit floating decimal point type real numbers at
D0 and D1.
[Ladder Mode]
[List Mode]
[Operations involved when X20 to X2F designate a value of 135]
Inputs an angle used for TAN
operation ( ).
Converts the input angle into a 32-bit
floating-point real number ( ).
Converts the converted angle
into a radian value ( ).
Executes TAN operati
on using
the converted radian value ( ).
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3
4
Step Instruction Device
Conversion to radian
32-bit floating-point
real number
D21
D20
RAD
TAN operation
32-bit floating-point
real number
D11
D10
TAN 32-bit floating-point
real number
D1
D0
X2F
BCD value
0
D30
1
35
X20
Conversion to BIN
BIN
b15
b0
BCD value
Conversion to floating-point
FLT
135
135 2
.
356194 1
.
00000
0