Mitsubishi Electronics FX3G User Manual
288
FX
3S
/FX
3G
/FX
3GC
/FX
3U
/FX
3UC
Series
Programming Manual - Basic & Applied Instruction Edition
10 Arithmetic and Logical Operation (
+, −, ×, ÷) – FNC 20 to FNC 29
10.9 FNC 28 – WXOR / Logical Exclusive OR
10.9
FNC 28 – WXOR / Logical Exclusive OR
Outline
This instruction executes the exclusive logical sum (XOR) operation of two numeric values.
1. Instruction format
2. Set data
3. Applicable devices
S
1: This function is supported only in FX
3G
/FX
3GC
/FX
3U
/FX
3UC
PLCs.
S
2: This function is supported only in FX
3U
/FX
3UC
PLCs.
Explanation of function and operation
1. 16-bit operation (WXOR and WXORP)
The exclusive logical sum (XOR) operation is executed to the contents of
and
in units of bit, and the
result is transferred to
.
• While the command input is OFF, the data of the transfer destination
does not change.
• While the command input is ON, the data of the transfer sources
and
do not change.
• When a constant (K) is specified in the transfer sources
and
, it is automatically converted into binary
format.
• The logical exclusive sum operation is executed in units of bit as shown in the table below (1
∀ 1 = 0, 0 ∀ 0 = 0,
1
∀ 0 = 1, 0 ∀ 1 = 1).
1: ON, 0: OFF
Operand type
Description
Data type
Data used for exclusive logical sum or word device number storing data
16- or 32-bit binary
Data used for exclusive logical sum or word device number storing data
16- or 32-bit binary
Word device number storing the exclusive logical sum result
16- or 32-bit binary
Oper-
and
Type
Bit Devices
Word Devices
Others
System User
Digit Specification
System User
Special
Unit
Index
Con-
stant
stant
Real
Number
Charac-
ter String
Pointer
X Y M T C S D .b KnX KnY KnM KnS T C D
R
U \G
V Z Modify K H
E
" "
P
S1
S2
S1
S2
S1
S2
WXOR (FNC 28) instruction
Logical operation
(unit: bit)
(unit: bit)
0
0
0
1
0
1
0
1
1
1
1
0
DXOR
DXORP
DXORP
Mnemonic
Operation Condition
W
P
FNC 28
XOR
D
16-bit Instruction
7 steps WXOR
WXORP
Mnemonic
Operation Condition
Continuous
Operation
Pulse (Single)
Pulse (Single)
Operation
32-bit Instruction
13 steps
Continuous
Operation
Pulse (Single)
Pulse (Single)
Operation
S
1
S
2
D
S
1
S
2
D
S
1
S
2
D
Command
input
FNC 28
WXOR
S1
S2
D
∀ →
S1
S2
D
D
S
1
S
2
S
1
S
2
S
1
S
2
D