LS Industrial Systems XBC-DN10E, User Manual

Page: 260 / 542

Chapter 6 Instruction Details
XBC E-Type Main Unit 6-143 Ver. 1
6.25.4 ROR4, ROR4P, ROR8, ROR8P
Instruction
Area Available
Step
Flag
P M K F L T C S Z D.x R.x
Co
nst.
U N D R
Error
(F110)
Zero
(F111)
Carry
(F112)
ROR4(P)
ROR8(P) D O O O - O - - - - O O - - - - -
2~4 - - O
n O O O - O O O - O - - O O O O O
Operand Description Data Type
D Data address to perform operation. NIBBLE/BYTE
n Number of bits to rotate to the left. WORD
[Flag Set]
Flag Description
Device
Number
Carry If Carry is caused during rotation, Carry Flag will be set. F112
1) ROR4 (Nibble Rotate Right)
(1) Rotates D’s 4 bits for the number of n bits specified to the right bit by bit, and the lowest bit among 4 bits
will rotate to Carry Flag and the highest bit. (Rotation within 4 bits)
(2) If Carry is caused during rotation, Carry Flag will be set.
2) ROR8 (Byte Rotate Right)
(1) Rotates D’s 8 bits for the number of n bits specified to the right bit by bit, and the lowest bit among 8 bits
will rotate to Carry Flag and the highest bit. (Rotation within 8 bits)
(2) If Carry is caused during rotation, Carry Flag will be set.
3) Program Example
(1) If P01004=h00C3, Input Signal P00000 is changed to On from Off status, It rotates 2 Bits to the right bit by bit
and then h0033 is saved in P01004.
ROR4P P01004 2
P00000
ROR4, ROR8
ROR4P, ROR8P
D
means ROR4/ROR8
P D
n
n
Command
Command