Mitsubishi Electric MELSEC-Q/L Programming Manual page 392

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Table of Contents

Operation error

• There is no operation error in the DROL(P) or DRCL(P) instruction.

Program example

• The following program rotates the contents of D0 and D1, not including the carry flag, 4 bits to the left when XC is ON.

[Ladder Mode]

Content of b28

before execution

• The following program rotates the contents of D0 and D1, including the carry flag, 4 bits to the left when XC is ON.

[Ladder Mode]

Content of b28

before execution

: ON/OFF status of the carry flag depends on its status before the execution of DRCL.

7 APPLICATION INSTRUCTIONS

7.2 Rotation Instructions

1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0

0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1

Contents of b27 to b0

before execution

b24b23 b20 b19

1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0

b24b23 b20 b19

0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0

Contents of b27 to b0

before execution

Contents of b31 to b28

before execution

Content of carry flag

SM700 before execution

Contents of b31 to b29

before execution