Example - Ladder Diagram

DSFL

The DSFL instruction shifts n number of WORD data registers, D ~ Dn, one WORD to the left. The result is saved in the same assigned data register, D.

Ladder Diagram Example

The initial value of the WORD data register, D30, is 3,232.

When the contact, M2.5, is powered ON (1), the instruction shifts 3 WORD registers, starting at D30, to the left.

The value of the WORD data register, D30, changes from 3,232 to 0.

The instruction shifts 3 WORD registers, starting at D30, to the left again.

The value of the WORD data register, D30, changes remains 0.
The values continue shifting left.

The instruction shifts 3 WORD registers, starting at D30, to the left again.

The value of the WORD data register, D30, changes remains 0.
The values continue shifting left.

DSFLP

The DSFLP one-shot instruction shifts n number of WORD data registers, D ~ Dn, one WORD to the left. The result is saved in the same assigned data register, D.
Every time this instruction executes, it energizes the output only once.

Ladder Diagram Example

The initial value of the WORD data register, D45, is 4,532.

When the contact, M2.8, is powered ON (1), the instruction shifts 2 WORD registers, starting at D45, to the left.

The value of the WORD data register, D45, changes from 4,532 to 0.

The instruction shifts 2 WORD registers, starting at D45, to the left again.

The value of the WORD data register, D45, changes remains 0.
The values continue shifting left.