Omron CJ - INSTRUCTIONS REFERENCE MANUAL 07-2009 Reference Manual page 506

Flags
Name
Error Flag
Equals Flag
Overflow Flag
Underflow Flag
Negative Flag
Function
The data specified in Au/Mi/Md/Dd and the data specified in AD/Su/Mr/Dr are added (+F), subtracted
(-F), multiplied (*F), or divided (/F) as single-precision floating-point data (32 bits: IEEE754) and
output to D+1, D.
+F
+
-F
–
*F
CS/CJ/NSJ Series Instructions Reference Manual (W474)
Label
ER ON if Au, AD, Mi, Su, Md, Dd is not recognized as floating-point data.
+F
• ON if the augend or addend data is not a number (NaN).
• ON if + and – are added.
-F
• ON if the minuend or subtrahend is not a number (NaN).
• ON if + is subtracted from + .
• ON if – is subtracted from – .
*F
• ON if the multiplicand or multiplier is not a number (NaN).
• ON if + and 0 are multiplied.
• ON if – and 0 are multiplied.
/F
• ON if the dividend or divisor is not a number (NaN).
• ON if the dividend and divisor are both 0.
• ON if the dividend and divisor are both + or – .
OFF in all other cases.
= • ON if both the exponent and mantissa of the result are 0.
• OFF in all other cases.
OF • ON if the absolute value of the result is too large to be expressed as a 32-bit floating-point value.
• OFF in all other cases.
UF • ON if the absolute value of the result is too small to be expressed as a 32-bit floating-point value.
• OFF in all other cases.
N • ON if the result is negative.
• OFF in all other cases.
Au+1 Au
Ad+1
Ad
R+1 R
Mi+1 Mi
Su
Su+1
R+1 R
Md+1 Md
Mr+1 Mr
R+1 R
Operation
Augend (floating-point data, 32 bits)
Addend (floating-point data, 32 bits)
Result (floating-point data, 32 bits)
Minuend (floating-point data, 32 bits)
Subtrahend (floating-point data, 32 bits)
Result (floating-point data, 32 bits)
Multiplicand (floating-point data, 32 bits)
Multiplier (floating-point data, 32 bits)
Result (floating-point data, 32 bits)
3. Instructions
3
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