435
Symbol Math Instructions Section 3-11
Description +B(404) adds the BCD values in Au and Ad and outputs the result to R.
Flags
Precautions If Au or Ad is not BCD, an error is generated and the Error Flag will turn ON.
If as a result of the addition, the content of R is 0000 hex, the Equals Flag will
turn ON.
If an addition results in a carry, the Carry Flag will turn ON.
Examples When CIO 000000 is ON in the following example, D00100 and D00110 will
be added as 4-digit BCD values, and the result will be output to D00120.
3-11-6 DOUBLE BCD ADD WITHOUT CARRY: +BL(405)
Purpose Adds 8-digit (double-word) BCD data and/or constants.
Ladder Symbol
Variations
Applicable Program Areas
RCY
+
(BCD)
(BCD)
(BCD)
Au
Ad
CY will turn
ON when there
is a carry.
Name Label Operation
Error Flag ER ON when Au is not BCD.
ON when Ad is not BCD.
OFF in all other cases.
Equals Flag = ON when the result is 0.
OFF in all other cases.
Carry Flag CY ON when the addition results in a carry.
OFF in all other cases.
+BL(405)
R
Au
Ad
Au: 1st augend word
Ad: 1st addend word
R: 1st result word
Variations Executed Each Cycle for ON Condition +BL(405)
Executed Once for Upward Differentiation @+BL(405)
Executed Once for Downward Differentiation Not supported.
Immediate Refreshing Specification Not supported.
Block program
areas
Step program
areas
Subroutines Interrupt tasks
OK OK OK OK
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