Mitsubishi Electric MELSEC iQ-F FX5 Programming Manual page 948

Operation error
Error code Description
(SD0/SD8067)
3401H The single-precision real number in the device specified by (s) is out of the valid range (-2147483648 to 2147483647).
3402H A special number is set to (s).
• The set single-precision real number is not located within the following range.
0, 2
• The set device or label value is -0, denormalized number, NaN (not a number), or .
18 TYPE CONVERSION FUNCTIONS
946
18.36 Converting REAL to DINT
-126 128
|(s)|< 2