7 Applied Instructions
7.3 Arithmetic and Logical Operation
201
FXCPU Structured Programming Manual
(Basic & Applied Instruction)
1
Outline
2
Instruction List
3
Configuration of
Instruction
4
How to Read
Explanation of
Instructions
5
Basic Instruction
6
Step Ladder
Instructions
7
Applied
Instructions
8
Interrupt Function
and Pulse Catch
Function
A
Relationships
between devices
and addresses
Function and operation explanation
1. 16-bit operation(WXOR, WXORP)
The exclusive logical sum (XOR) operation is executed to the contents specified by and in units of
bit, and the result is transferred to the device specified by .
• While the command input is OFF, the data of the transfer destination specified by does not change.
• While the command input is ON, the data of the transfer sources specified by and do not
change.
• When a constant (K) is specified in the transfer sources specified by and , it is automatically
converted into the 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 and 0 ∀ 1 = 1).
In the table : 1=ON, 0=OFF
2. 32-bit operation(DXOR, DXORP)
The exclusive logical sum (XOR) operation is executed to the contents specified by and in units of
bit, and the result is transferred to the device specified by .
• While the command input is OFF, the data of the transfer destination specified by does not change.
• While the command input is ON, the data of the transfer sources specified by and do not
change.
• When a constant (K) is specified in the transfer sources specified by and , it is automatically
converted into the 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 and 0 ∀ 1 = 1).
In the table : 1=ON, 0=OFF
Cautions
1) When handling 32-bit data in a structured program, a 16-bit device cannot be specified directly as in the
case of a simple project. Use a label to handle 32-bit data.
A 32-bit counter can be specified directly as it is a 32-bit long device.
Use a global label to specify a device.
2) The FX
0, FX0S or FX0N PLC does not support the instructions of pulse operation type.
To execute pulse operation, make the instruction execution condition pulse type.
3) Some restrictions to applicable devices
S1:The FX
3U, FX3UC and FX3G PLCs only are applicable.
S2:The FX
3U and FX3UC PLCs only are applicable.
WXOR
Logical operation
(unit: bit)
000
101
011
110
+1, +1,
+1,
DXOR instruction
Logical operation
(unit: bit)
000
101
011
110
Command input
XOR data 1
XOR data 2
XOR result
WXOR
EN
s1
s2
ENO
d1
∀ →
ds1 s2
Command input
Label2
*1
Label3
*2
*1 This defines the exclusive logical sum data or the device that stores the exclusive logical sum data.
*2 This defines the devices that stores the exclusive logical sum result.
Label1
*1
DXOR
EN
s1
s2
ENO
d
+1, ∀ +1, → +1,
ds1 s1
s2 s2
d
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