Mitsubishi Electric MELSEC-Q/L Programming Manual page 413

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Table of Contents

• An example of operation where digit specification is used for shift data (D) and the data (S) to be stored in the shift data is

shown below.

(1) Overflow (deletion data)

(2) n2 words shift to the left (n2=2)

(3) Coping n2 words

Operation error

• In any of the following cases, an operation error occurs, the error flag (SM0) turns ON, and an error code is stored into SD0.

Error details

n1 is other than 0 to 512.

n2 is a negative value.

n1 is smaller than n2.

The value in the device specified by the instruction exceeds the setting

The device range for the number of n2 points from (S) overlaps that for the

number of n1 points from (D).

Program example

• The sample program shifts the 9 words of data starting from D20 3 words to the left and transfers 3 words of data from D10

to the 3 words from D20.

[Ladder Mode]

Set the same digit when shifting the digit-specified bit devices.

7 APPLICATION INSTRUCTIONS

7.3 Shift Instructions