Mitsubishi Electric M800VW Series Programming Manual page 384

M800V/M80V Series PLC Programming Manual (1/2)
8 Function Instructions
8.11 Special Function Instructions
 Operation errors
 In the following cases, an arithmetic error occurs, the error flag (SM0) turns ON, and an error code is stored at SD0.
- The designated device value is "-0", unnormalized number, nonnumeric, or ± ∞ . (Error code: 35)
- The operation result exceeds the following range. (When an overflow occurs) (Error code: 36)
| Operation result | < 2
- An error occurred during operation. (Error code: 36)
 Program example
 The following program conducts a TAN operation on the angle set as BCD 4-digit from X20 to X2F and stores the result at
D0 and D1 as a 32-bit floating-point real number.
SM400
0 BIN K4X20 D30
FLT D30 D20
RAD D20 D10
TAN D10 D0
13
X2F
0 1 3
BCD value
D21
135
32-bit floating-point real
number
128
[Ladder mode]
Inputs an angle used for TAN operation (1).
Converts the input angle into a 32-bit
floating-point real number (2).
Converts the converted angle into a radian
value (3).
Executes TAN operation using the
converted radian value (4).
END
[Operations when X20 to X2F designate a value of 135]
X20
(1) Conversion to BIN
5
BIN
(2) Conversion to floating-point
real number
FLT
(3) Conversion to radian value
D11
D20
RAD 32-bit floating-point real
number
D30
b15 b0
135
BIN value
(4) TAN operation
D 1 0
2.356194
TAN
363
[List mode]
Steps Inst. Device
0 LD SM400
1 BIN K4X20
D30
4 FLT D30
D20
7 RAD D20
D10
10 TAN D10
D0
13 END
D1 D 0
-1.000000
32-bit floating-point real
number
IB-1501667-B