Panasonic FP Series User Manual

Bit-shift instructions
100
Part II IEC Instructions
ROL
Rotate N bits to the left
To add an enable input and enable output to the instruction, select [With EN/ENO] from the
"Instructions" pane (LD, FBD or IL editor). To reuse an instruction select "Recently used" from the
context menu or press <Ctrl>+<Shift>+<v> in the programming window.
15
0
0
1
00
0010
11 8
0011
0100
30
..
12
.. ..
74
..
DT0
0010 0011
11 8
0100
001
30
15 .. 12 .. .. 74 ..
DT0
Source register
Target register
(n = 4 bits)
Bit
Bit
PLC types
Availability of ROL (see page 1330)
Data type I/O Function
1st input input value
2nd input number of bits by which the input value is rotated to the left
ANY_BIT
output as input result
The number of steps may vary depending on the PLC and parameters used, see
also Table of Code Intensive Instructions in the online help.
Description
ROL rotates a defined number (N) of bits to the left.
Data types
Example
In this example, the same POU header is used for all programming languages. For an example
using IL (instruction list), please refer to the online help.
POU header
All input and output variables used for programming this function have been declared in the POU
header.
This example uses variables. You can also use a constant for the input variable.
Body
The last N bits (here 4) of source_register are left-rotated. The result will be written in
target_register.

Panasonic FP Series Specifications

General

Mounting	DIN rail
Type	PLC
Communication Interface	RS-232, RS-485, Ethernet (depending on model)
Input Voltage	100-240V AC or 24V DC (depending on model)
Output Type	Relay, Transistor
I/O Points	Varies by model
Operating Temperature	0°C to 55°C
Dimensions	Varies by model
Weight	Varies by model