Panasonic FP7 Series Command Reference Manual page 600

11.33 DROFF (Conversion: Double-precision Real Number → Integer (Round
to the Nearest Unit))
Example 4) Signed 16 bits (SS) (negative value)
Example 5) Unsigned 32 bits (UL) (positive value)
Example 6) Unsigned 32 bits (UL) (negative value)
Operation error occurs if an unsigned integer is specified for the operation unit and a negative
value is converted.
Example 7) Signed 32 bits (SL) (positive value)
11-80 WUME-FP7CPUPGR-12