Mitsubishi Electric MELSEC-Q/L - Page 255

6 BASIC INSTRUCTIONS
6.2 Arithmetic Operation Instructions
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6
Operation error
• In any of the following cases, an operation error occurs, the error flag (SM0) turns ON, and an error code is stored into SD0.
*1 There are CPU modules that will not result in an operation error if -0 is specified. For details, refer to Page 87 Using single/double-
precision real number data.
Program example
• The following program multiplies the 32-bit floating decimal point real number at D3 and D4 and the 32-bit floating decimal
point real number at D10 and D11, and stores the result at R0 and R1.
• The following program divides the 32-bit floating decimal point real number at D10 and D11 by the 32-bit floating decimal
point real number at D20 and D21, and stores the result at D30 and D31.
Error
code
Error details Q00J/
Q00/
Q01
QnH QnPH QnPRH QnU LCPU
4100 The specified device value is not within the following range:
0, 2
-126
 | Specified device value | < 2
128
The specified device value is -0.
*1

The divisor is 0. 
4141 The operation result exceeds the following range. (when an overflow
occurs):
2
128
 | Operation result |
|Operation result| < 2
128

4140 The specified device value is -0, unnormalized number, nonnumeric, and . 
[Ladder Mode] [List Mode]
[Operation]
[Ladder Mode] [List Mode]
[Operation]
Step
Instruction
Device
D4
36.7896
D3
D11
11.9278
D10
R1
438.8190
R0
Step
Instruction
Device
D11
52171.39
D10
D21
9.73521
D20
D31
5359.041
D30