447
Logic Instructions Section 3-12
Flags
Precautions When XNRW(037) is executed, the Error Flag will turn OFF.
If as a result of the NOR, the content of R is 0000 hex, the Equals Flag will
turn ON.
If as a result of the NOR, the leftmost bit of R is 1, the Negative Flag will turn
ON.
3-12-8 DOUBLE EXCLUSIVE NOR: XNRL(613)
Purpose Takes the logical exclusive NOR of corresponding bits in double words of
word data and/or constants.
Ladder Symbol
Variations
Applicable Program Areas
Operand Specifications
Name Label Operation
Error Flag ER OFF
Equals Flag = ON when the result is 0.
OFF in all other cases.
Negative Flag N ON when the leftmost bit of R is 1.
OFF in all other cases.
XNRL(613)
I
1
I
2
R
I
1
: Input 1
I
2
: Input 2
R: Result word
Variations Executed Each Cycle for ON Condition XNRL(613)
Executed Once for Upward Differentiation @XNRL(613)
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
Area I
1
I
2
R
CIO Area CIO 0 to CIO 6142
Work Area W0 toW 510
Holding Bit Area H0 to H510
Auxiliary Bit Area A0 to A958 A448 to A958
Timer Area T0000 to T4094
Counter Area C0000 to C4094
DM Area D0 to D32766
Indirect DM addresses
in binary
@ D0 to @ D32767
Indirect DM addresses
in BCD
*D0 to *D32767
Constants #00000000 to #FFFFFFFF (binary) ---
Data Registers ---
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