Delta-electronics Extension Digital I/O Module DOP-EXIO14RAE Manual de usuario descargar pdf (Pagina 129)

Appendix D Use of Application Instructions|DOP-EXIO Series

D-48

Revision March, 2008, Doc. Name: 2007PDD23000014

Mnemonic Operands Function

ROL D

Rotation Left

Bit Devices Word Devices

X Y M S K H KnX KnY KnM KnS T C D E F

       

 

y Note:

1. If D is used in device F, only 16-bit instruction is applicable.

2. If D is designated as KnY, KnM, and KnS, only K4 (16-bit) and K8

(32-bit) are valid.

3. Range of n: 1 ~ 16 (16-bit); 1 ~ 32 (32-bit)

16-bit instruction (5 Steps)

ROL

Continuous

execution

32-bit instruction (9 Steps)

DROL

Continuous

execution

y Flags: M1022 (Carry flag)

Operands:

: Device to be rotated

: Number of bits to be rotated in 1 rotation

Explanations:

This instruction rotates the device content designated by D to the left for n bits.

Program Example:

When X0 = Off→On, the 16 bits (4 bits as a group) in D10 will rotate to the left, as shown in the figure

below. The bit marked with

※ will be sent to carry flag M1022.

D10 K4

111 11 100 0 0011 000

11000001100110111

16 bits

Rotate to the left

fter one rotation

to the left

Carry

flag

Carry

flag

D10

lower bit

higher bit

1 2 ... 124 125 126 127 128 129 130 131 132 133 134 ... 156 157

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