Mitsubishi MELSEC Q Series Programming Manual page 653

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.
• The value of the specified device is
(For the Basic model QCPU, High Performance model QCPU, Process CPU, Redundant
CPU)
*2: There are CPU modules that will not result in an operation error if
• The result exceeds the following range (Operation results in an overflow)
(For the Universal model QCPU, LCPU)
128
2 | Operation result |
• The value of the specified device is
(For the Universal model QCPU, LCPU)
Program Example
(1) The following program converts the radian value set with 32-bit floating decimal point type
real number at D20 and D21 to angles, and stores the result as a BCD value at Y40 to Y4F.
[Ladder Mode]
[List Mode]
Step Instruction
[Operations involved when the values at D20 and D21 are 1.435792]
D21 D20
1 . 4 3 5 7 9 2
32-bit floating-point
real number
*2
0.
0, unnormalized number, nonnumeric, and ±
Converts a radian value into
an angle (
Converts the angle in
32-bit floating-point real
number into an integer (
Outputs the converted integer
to a display device (
Device
Conversion
D11 D10
to angle
8 2 . 2 6 4 8 2
DEG 32-bit floating-point
real number
(Error code: 4100)
0 is specified. For details, refer to 3.2.4.
(Error code: 4141)
(Error code: 4140)
)
1
)
2
)
3
Conversion
D0
BCD operation
to BIN b15 b0
82
BIN BIN value BCD
DEG(P)
1
2
3
4
.
6
6
7
8
Y4F Y40
0 0 8 2
BCD value
7-279