Omron C200HE User Manual

Wd: Rotate word

IR, SR, AR, DM, HR, LR

ROL(27)

Wd

@ROL(27)

Wd

When the execution condition is OFF, ROL(27) is not executed. When the
execution condition is ON, ROL(27) shifts all Wd bits one bit to the left, shifting
CY into bit 00 of Wd and shifting bit 15 of Wd into CY.

1 0 1 1 0 0 1 1 1 0 0 0 1 1 0 1

0

CY

Bit 
00

Bit 
15

Use STC(41) to set the status of CY or CLC(41) to clear the status of CY before
doing a rotate operation to ensure that CY contains the proper status before
execution ROL(27).
The status of CY is cleared at the end of each cycle (when END(01) is executed).

Indirectly addressed DM word is non-existent. (Content of 

DM word is

not BCD, or the DM area boundary has been exceeded.)

Receives the data of bit 15.

EQ: 

ON when the content of Wd is zero; otherwise OFF.

N: 

ON when a 1 is shifted into bit 15 of Wd.

Wd: Rotate word

IR, SR, AR, DM, HR, LR

ROR(28)

Wd

@ROR(28)

Wd

When the execution condition is OFF, ROR(28) is not executed. When the
execution condition is ON, ROR(28) shifts all Wd bits one bit to the right, shifting
CY into bit 15 of Wd and shifting bit 00 of Wd into CY.

0 1 0 1 0 1 0 0 0 1 1 1 0 0 0 1

0

Bit 
15

CY

Bit 
00

Use STC(41) to set the status of CY or CLC(41) to clear the status of CY before
doing a rotate operation to ensure that CY contains the proper status before
execution ROR(28).
The status of CY is cleared at the end of each cycle (when END(01) is executed).

Indirectly addressed DM word is non-existent. (Content of 

DM word is

not BCD, or the DM area boundary has been exceeded.)

ROR(28) receives the data of bit 00.

EQ: 

ON when the content of Wd is zero; otherwise OFF.

N: 

ON when a 1 is shifted into bit 15 of Wd.