Chapter 6: Instructions 87
Logic Instruction Details
Instruction
Mnemonic Bit AND Operation Range
Bit
■ Byte
WAND
DAND
Bit AND operation
■ Word
Ladder
Process each bit of S1 and S2 in bit AND operation and store the
result in D.
S1 S2 D
000
010
100
111
Description
1. Process the values of the S1 and S2 bits (byte/word) in bit AND operation and store the result
in D.
For example: S1 = $00FF (hex)
S2 = $3333 (hex)
D = $0033 (hex)
2. This operation will occur on every scan for which the input condition is true (On). To perform
the operation only on a change of input condition, use the rising/falling edge contact.
Example
Program Expression Operation Results
Initial conditions: W0 = $00FF
W1 = $3333
W2 = $XXXX
Operation results: W0 = $00FF
W1 = $3333
W2 = $0033
WAND
D =
S1 =
S2 =
R
R
DAND
D =
S1 =
S2 =
S1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1
S2 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1
D
0 0 0 0 0 0 0 0 0 0 1 1 0 0 1 1
AND
DAND
D = W2
S1 = W0
S2 = W1
R0.0
R
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