Omron SYSMAC CJ - REFERENCE MANUAL 01-2008 Reference Manual page 473

Symbol Math Instructions
Description
Flags
Precautions
Examples
434
+CL(403) adds the binary values in Au and Au+1, Ad and Ad+1, and CY and
outputs the result to R.
+
CY will turn
ON when there
CY
is a carry.
Name
Error Flag ER
Equals Flag =
Carry Flag CY
Overflow Flag OF
Underflow Flag UF
Negative Flag N
When +CL(403) is executed, the Error Flag will turn OFF.
If as a result of the addition, the content of R, R+1 is 00000000 hex, the
Equals Flag will turn ON.
If the addition results in a carry, the Carry Flag will turn ON.
If the result of adding two positive numbers and CY is negative (in the range
80000000 to FFFFFFFF hex), the Overflow Flag will turn ON.
If the result of adding two negative numbers and CY is positive (in the range
00000000 to 7FFFFFFF hex), the Underflow Flag will turn ON.
If as a result of the addition, the content of the leftmost bit of R+1 is 1, the
Negative Flag will turn ON.
Note To clear the Carry Flag (CY), execute the Clear Carry (CLC(041)) instruction.
When CIO 000000 is ON, D00201, D00200, D00211, D00210, and CY will be
added as 8-digit signed binary values, and the result will be output to D00221
and D00220.
Au+1 Au
Ad+1 Ad
CY
R+1 R
Label
OFF
ON when the result is 0.
OFF in all other cases.
ON when the results in a carry.
OFF in all other cases.
ON when the result of adding two positive numbers and
CY is in the range 80000000 to FFFFFFFF hex.
OFF in all other cases.
ON when the result of adding two negative numbers and
CY is in the range 00000000 to 7FFFFFFF hex.
OFF in all other cases.
ON when the leftmost bit of the result is 1.
OFF in all other cases.
Section 3-11
(Signed binary)
(Signed binary)
(Signed binary)
Operation