Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual Rol, Explanation

DVP - ES2/EX2/SS2/SA2/SX2/SE Operation Manual - Programming

API Mnemonic Operands Function Controllers

31

D

ROL

P

Rotate Left

ES2/EX2

SS2

SA2

SX2

SE

Type

Bit Devices

Word devices

Program Steps

OP

X

Y

M

S

K

H KnX KnY KnM KnS T

C

D

E

F

ROL, ROLP: 5 steps

D

*

*

*

*

*

*

*

*

*

*

DROL, DROLP: 9 steps

n

PULSE

16-bit

32-bit

ES2/EX2

SS2

SA2

SX2

ES2/EX2

SS2

SA2

SX2 ES2/EX2

SS2

SA2

SX2

SE

SE

SE

Operands:

D: Device to be rotated n: Number of bits to be rotated in 1 rotation

Explanation:

1.This instruction rotates bit status of the device D to the left for n bits

2.The status of the last bit rotated (marked with ※) is copied to the carry flag M1022.

3.This instruction is generally used in pulse execution mode (ROLP, DROLP).

4.If operand D uses index F, only a 16-bit instruction is available.

5.If operand D is specified as KnY, KnM or KnS, only K4 (16-bit) or K8 (32-bit) is valid.

6.Valid range of operand n: 1≤ n ≤16 (16-bit), 1≤ n ≤32 (32-bit)

Program Example:

When X0 goes from OFF to ON, all 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.

	X0			ROLP			D10					K4
								Rotate to the left
			Upper bit											Lower bit
M1022				1	1	1	1 1	1 1		1	0	0 0	0	0	0	0	0	D10
Carry
	flag
										16 bits
									After one rotation
			Upper bit								to the left				Lower bit
M1022		1	1		1 1		1 0	0	0	0	0	0 0	0	1	1	1	1	D10
Carry
	flag

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