Omron SYSMAC CP2E-E D Series User Manual

4-9
4 Understanding Programming
CP2E CPU Unit Software User’s Manual(W614)
4-3 Function Blocks
4
4-3-2 Advantages of Function Blocks
Structured programs created with function blocks have better design quality and required less devel-
opment time.
z Easy-to-read “Block Box” Design
The I/O operands are displayed as local variable names in the program, so the program is like a
“black box” when entering or reading the program and no extra time is wasted trying to understand
the internal algorithm.
z Different Processes Easily Created from a Single Function Block
Many different processes can be created easily from a single function block by using input variables
for the parameters (such as timer SVs, control constants, speed settings, and travel distances) in the
standard process.
z Reduced Coding Errors
Coding mistakes can be reduced, because blocks that have already been debugged can be reused.
z Data Protection
The local variables in the function block cannot be accessed directly from the outside, so the data
can be protected. (Data cannot be changed unintentionally.)
z Improved Reusability through Programming with Variables
The function block’s I/O is entered as local variables, so the data addresses in the function block do
not have to be changed as they do when copying and reusing a program section.
Processes that are independent and reusable (such as processes for individual steps, machinery,
equipment, or control systems) can be saved as function block definitions and converted to library
functions.
The function blocks are created with local variable names that are not tied to physical addresses, so
new programs can be developed easily just by reading the definitions from the file and placing them
in a new program.
Mathematical expressions can be entered in structured text (ST) language.
Nesting function blocks is supported. For example, it is possible to express only special operations
in ST language within a function block in a ladder diagram.
For details on using function blocks, refer to the CX-Programmer Ver. 7.0 Operation Manual: Func-
tion Blocks (Cat. No. W447).
Structured Programming
Creating Libraries
Nesting Multiple Languages
Function block (ladder language)
Call (Nesting)
Function block (ST language)

Omron SYSMAC CP2E-E D Series Specifications

General

Input Voltage	24V DC
Data Memory	Up to 32 KB
Type	Programmable Logic Controller (PLC)
CPU Type	RISC
Communication Ports	RS-232C, RS-485
Ethernet Port	Yes
USB Port	Yes
Serial Port	1 x RS-232C
High-speed Counter	Yes
Pulse Output	Yes
Interrupt Inputs	Yes (4 inputs)
Expansion Slots	2
Operating Temperature	0°C to 55°C
Dimensions	90 x 90 x 70 mm
Series	CP2E-E D Series

Summary

SYSMAC CP Series

CP2E CPU Unit Software User’s Manual

User's Manual for CP2E CPU Unit Software.

Introduction

CP2E CPU Unit Manuals

CP2E CPU Unit Hardware User’s Manual

CP2E CPU Unit Software User’s Manual (This Manual)

Describes software specifications, operation, memory, programming, and functions.

CONTENTS

Terms and Conditions Agreement

Safety Precautions

Provides critical safety information for using the PLC.

Precautions for Safe Use

Details precautions for handling and external circuits for safe operation.

Section 1 Overview

Section 2 Internal Memory in the CPU Unit

Details the types of internal memory and stored data in the CPU Unit.

Section 3 CPU Unit Operation

Explains CPU Unit operation, modes, and behavior during power interruptions.

Section 4 Understanding Programming

Covers basic information on ladder programming for CP2E CPU Units.

4 Understanding Programming

4-1 Programming

Covers user programs, data, and programming languages.

4-3 Function Blocks

4-4 Programming Instructions

Details instructions, operands, variations, execution conditions, data formats, and I/O refresh.

4-6 Index Registers

Section 5 I/O Memory

Describes the types of I/O memory areas and their details.

Section 6 I/O Allocation

Section 7 PLC Setup

Details parameters for basic settings of the CP2E CPU Unit.

7 PLC Setup

7-2 PLC Setup Settings

Covers settings for startup, timing, interrupts, inputs, and outputs.

7-1 Overview of the PLC Setup

7-2 PLC Setup Settings

Covers settings for startup, timing, interrupts, inputs, serial ports, pulse outputs, and Ethernet.

Terms and Conditions Agreement

Warranty, Limitations of Liability

Outlines warranty, limitations of liability, and buyer remedies.

Limitation on Liability; Etc

States OMRON COMPANIES SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL DAMAGES.

Precautions for Safe Use

Handling

Precautions for proper unit setting, DIP switches, DM Area initialization, and program checks.

External Circuits

Related Manuals

SYSMAC CP Series CP2E CPU Unit Software User’s Manual (this manual)

Describes software specifications, CPU Unit operation, programming, and functions.

SYSMAC CP Series CP2E CPU Unit Hardware User’s Manual

1 Overview

1-1 CP2E Overview

1-2 Basic Operating Procedure

Outlines the general procedure for setting up and operating the CP2E.

2 Internal Memory in the CPU Unit

2-1 Internal Memory in the CPU Unit

Details the types of internal memory and stored data in the CPU Unit.

3 CPU Unit Operation

3-1 CPU Unit Operation

Describes CPU Unit operation, modes, and behavior during power interruptions.

3-2 Backing Up Memory

Explains data backup to built-in Flash Memory and non-volatile RAM.

5 I/O Memory

5-1 Overview of I/O Memory Areas

Describes I/O memory areas: CIO, Work, Holding, Data, Timer, Counter, Index, Data Registers, System Areas.

6 I/O Allocation

6-1 Allocation of Input Bits and Output Bits

Explains OMRON's term for allocating I/O bits and how the CPU Unit allocates them to expansion units.

8 Overview of Built-in Functions and Allocations

8-1 Built-in Functions

8-2 Overall Procedure for Using CP2E Built-in Functions

Describes the steps to select, configure, create programs, transfer, and start using functions.

8-3 Terminal Allocations for Built-in Functions

9 Quick-response Inputs

9-1 Quick-response Inputs

10 Interrupts

10-1 Interrupts

10-2 Input Interrupts

Explains input interrupts that execute tasks when built-in inputs turn ON or OFF.

10-3 Scheduled Interrupts

10-4 Precautions for Using Interrupts

11 High-speed Counters

11-1 Overview

Describes using high-speed counters for measuring pulse input signals and applications.

11-2 High-speed Counter Inputs

Details pulse input methods, counting ranges, reset methods, and frequency measurement.

11-3 High-speed Counter Interrupts

Explains executing interrupt tasks based on counter PV comparison with target values or ranges.

12 Pulse Outputs

12-1 Overview

12-2 Positioning Control

Describes using pulse outputs with trapezoidal acceleration/deceleration.

12-3 Jogging

12-4 Implementing Interrupt Feeding

12-5 Positioning Linear Interpolation

12-6 Defining Origin Position

Describes methods to define origin position using origin search or PV changes.

12-10 Precautions when Using Pulse Outputs

12-11 Pulse Output Pattern

Stopping a Pulse Output

13 PWM Outputs

13-1 PWM Outputs (Variable-duty-factor Pulse Outputs)

Describes PWM outputs, including application examples and specifications.

14 Serial Communications

14-1 Serial Communications

14-2 Program-free Communications with Programmable Terminals

14-3 No-protocol Communications with General Components

14-4 Modbus-RTU Easy Master Function

Explains using Modbus-RTU Easy Master for controlling Modbus-compatible slaves.

14-5 Serial PLC Links

14-6 Connecting the Host Computer

14-7 Modbus-RTU Slave Function

Explains reading and writing CP2E data from Modbus-compatible masters.

15 Ethernet

15-1 System Configuration and Features

15-2 Specifications

15-3 Basic Setting for Ethernet

Outlines the startup procedure, PLC setup, basic settings, and communications test.

15-4 FINS Communications

Explains FINS communication services, procedures, and PLC setup for UDP and TCP.

15-5 Socket Services

15-6 Automatic Clock Adjustment and Specifying Servers by Host Name

16 Other Functions

16-1 PID Temperature Control

Explains PID instructions with autotuning for temperature control.

16-3 DM Backup Function

Describes saving specified DM Area words to built-in Flash Memory and automatic restoration.

16-4 Security Functions

18 Programming Device Operations

18-2 Overview of CX-Programmer

18-3 Creating a Ladder Program

Details inputting, saving, reading, editing ladder programs, and using automatic creation.

18-4 Connecting Online to the CP2E and Transferring the Program

Explains making an online connection and transferring programs.

18-5 Online Monitoring and Debugging

Describes monitoring status, force-set/reset bits, and online editing.