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FX Series Programmable Controlers
Applied Instructions 5
5-34
5.4
Rotation And Shift - Functions 30 to 39
Contents:
Page
ROR - 
Rotation Right FNC 
30 
5-35
ROL - 
Rotation Left 
FNC 31 
5-35
RCR - 
Rotation Right with Carry FNC 
32 
5-36
RCL - 
Rotation Left with Carry FNC 
33 
5-36
SFTR - 
(Bit) Shift Right FNC 
34 
5-37
SFTL - 
(Bit) Shift Left 
FNC 35 
5-37
WSFR - 
Word Shift Right FNC 
36 
5-38
WSFL - 
Word Shift Left 
FNC 37 
5-38
SFWR - 
Shift Register Write 
FNC 38 
5-39
SFRD - 
Shift Register Read 
FNC 39 
5-40
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.