Delta DVP-ES2 User Manual download pdf (Page 212)

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101

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

3-96

API Mnemonic Operands Function

SFTL P

Bit Shift Left

Controllers

ES2/EX2 SS2

SA2

SX2

Bit Devices Word devices Program Steps Type

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

* * * *

* * *

* *

SFTL, SFTLP: 9 steps

PULSE 16-bit 32-bit

ES2/EX2 SS2

SA2

SX2 ES2/EX2 SS2

SA2

SX2 ES2/EX2 SS2

SA2

SX2

Operands:

S: Start No. of source device D: Start No. of destination device n

: Length of data to be

shifted n

: Number of bits to be shifted as a group

Explanations:

1. This instruction performs a left shift from source device of n

bits starting from S to

destination device of n

bits starting from D

2. This instruction is generally used in pulse execution mode (SFTLP).

3. Valid range of operand n1, n2 : 1≤ n2 ≤ n1 ≤1024

Program Example:

1. When X0 is rising edge triggered, SFTL instruction shifts X0~X4 into 16-bit data M0~M15

and M0~M15 also shift to the left with a group of 4 bits.

2. The figure below illustrates the left shift of the bits in one scan

n M15~M12 → Carry

o M11~M8 → M15~M12

p M7~M4 → M11~M8

q M3~M0 → M7~M4

r X3~X0 → M3~M0 completed

SFTR X0 M0 K16 K4

X3 X2 X1 X0

M15 M14 M13 M12 M11 M10 M9 M8 M7 M6 M5 M4 M3 M2 M1 M0

1 2 3 4

4 bits in a group shift to the left

Carry

1 2 ... 207 208 209 210 211 212 213 214 215 216 217 ... 701 702

Delta DVP-ES2 User Manual Page 212

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