Mitsubishi Electric MELSEC-Q/L Programming Manual page 247

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Table of Contents

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.

Error details

The specified device value is not within the following range:

 | Specified device value | < 2

The specified device value is -0.

The operation result exceeds the following range. (when an overflow

|Operation result| < 2

The specified device value is -0, unnormalized number, nonnumeric, and .

*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 adds the 32-bit floating decimal point type real number at D3 and D4 and the 32-bit floating decimal

point type real number at D10 and D11 when X20 turns ON, and stores the result at D3 and D4.

[Ladder Mode]

• The following program subtracts the 32-bit floating decimal point type real number at D10 and D11 from the 32-bit floating

decimal point type real number at D20 and D21, and stores the result of the subtraction at D20 and D21.

[Ladder Mode]

6 BASIC INSTRUCTIONS

6.2 Arithmetic Operation Instructions