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FX Series Programmable Controlers
Applied Instructions 5
5-24
5.3
Arithmetic And Logical Operations -
Functions 20 to 29
Contents:
Page
ADD -
Addition 
FNC 20 
5-25
SUB -
Subtraction 
FNC 21 
5-26
MUL -
Multiplication 
FNC 22 
5-27
DIV -
Division 
FNC 23 
5-28
INC - 
Increment 
FNC 24 
5-29
DEC - 
Decrement 
FNC 25 
5-29
WAND -
Word AND 
FNC 26
5-30
WOR - 
Word OR 
FNC 27 
5-30
WXOR -
Word Exclusive OR 
FNC 28 
5-31
NEG -
Negation FNC 
29 
5-31
Symbols list:
D - Destination device.
S - Source device.
m, n- Number of active devices, bits or an operational constant.
Additional numeric suffixes will be attached if there are more than one operand with the same
function e.g. D
1
, S
or for lists/tabled devices D
3+0, 
S
+9 
etc.
MSB - Most Significant Bit, sometimes used to indicate the mathematical sign of a number, i.e.
positive = 0, and negative = 1.
LSB - Least Significant Bit.
Instruction modifications:
 
An instruction operating in 16 bit mode, where 
 identifies the instruction
mnemonic.
P -  A 16 bit mode instruction modified to use pulse (single) operation.
D
 
-  An instruction modified to operate in 32 bit operation.
D
P -  A 32 bit mode instruction modified to use pulse (single) operation.
 
- A repetitive instruction which will change the destination value on every scan unless
modified by the pulse function.
 
- An operand which cannot be indexed, i.e. The addition of V or Z is either invalid or will
have no effect to the value of the operand.