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Omron CS Series User Manual

Omron CS Series
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18
Overview of Communications Functions Section 1-5
Even if the IP address and UDP port number of the host computer (a
DHCP client computer) are changed, it is still possible for the host com-
puter to send FINS commands to PLCs on the Ethernet network and to
receive responses. When UDP is used, either the automatic generation
(dynamic) method or the IP address table method must be selected for IP
address conversion. When TCP is used, changes in IP address and TCP
port numbers are handled automatically.
Multiple FINS applications (CX-Programmer and user-created application
programs) at the same computer can be connected online to a PLC via
Ethernet (using either TCP/IP or UDP/IP).
1-5-2 Socket Services
The socket services allow devices on the Ethernet to send and receive vari-
ous data using either the UDP or TCP protocol.
Manipulating Dedicated
Control Bits
One way to use socket services is to set the required parameters in the
parameter area allocated in the DM Area, and then to request particular UDP
or TCP socket services by turning ON dedicated control bits in memory. When
the Ethernet Unit has completed the requested process, the same bit is
turned OFF to provide notification. Data that is sent or received is automati-
cally handled according to the I/O memory locations specified in the parame-
ter area.
There is no need to execute the CMND(490) instruction or to monitor the com-
pletion timing and actual processing of the instruction, so this helps to simplify
ladder programming.
A total of eight ports (UDP and TCP combined) can be used for socket ser-
vices.
Starting with unit version 1.5, the performance of sending and receiving has
been improved by using the option settings.
Ethernet
Ethernet Unit
Service request switch
Parameters
UNIX computer, etc.
(node with socket
services interface)
CS/CJ-series
CPU Unit
TCP/UDP
protocol
TCP/UDP
protocol
IP
TCPUDP
Socket
Ethernet Unit CS/CJ-series
CPU Unit

Table of Contents

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Questions and Answers:

Omron CS Series Specifications

General IconGeneral
ManufacturerOmron
CategoryNetwork Hardware
MountingDIN Rail
TypePLC
SeriesCS Series
Programming LanguageLadder Diagram, Instruction List, Function Block Diagram, Structured Text, Sequential Function Chart
Communication PortsEthernet
Protocols SupportedModbus, Ethernet/IP
Power Supply24V DC or 100-240V AC
Operating Temperature0°C to 55°C
Storage Temperature-25°C to 65°C
Humidity Range10% to 90% (non-condensing)
Vibration Resistance10 to 57 Hz, 0.075 mm amplitude; 57 to 150 Hz, 1 G
Shock Resistance150 m/s² (15 G) in X, Y, and Z directions 3 times each

Summary

PRECAUTIONS

Intended Audience

Defines the target personnel for this manual, including those with knowledge of electrical systems.

General Precautions

Outlines operational guidelines and safety measures for using OMRON products in various conditions.

Safety Precautions

Provides critical warnings regarding electrical shock and product modification to ensure user safety.

Operating Environment Precautions

Specifies locations and conditions to avoid for safe and reliable control system operation.

Application Precautions

Details safety precautions for using Ethernet Units in specific applications and system configurations.

Conformance to EC Directives

Outlines conformity with EMC and Low Voltage Directives for products built into machines.

SECTION 1 Features and System Configuration

Ethernet Unit Function Guide

Provides an overview of system configuration examples and objectives for using Ethernet Units.

Features

Highlights compatibility, speed improvements, protocol support, and simplified socket services.

System Configuration

Describes the basic network configuration, devices required, and setup areas for Ethernet Units.

Specifications

Details general specifications, dimensions, and software configuration for CS and CJ series Ethernet Units.

Overview of Communications Functions

Explains FINS/UDP and FINS/TCP communication services, including basic and upgraded functions.

Nomenclature and Functions

Identifies component names, switches, and LED indicators for CS and CJ series Ethernet Units.

Comparison with Previous Models

Compares features and specifications between previous and new models of Ethernet Units.

Unit Version Upgrade Information

Details the upgrades and new functions introduced in Unit Versions 1.3, 1.4, and 1.5.

SECTION 2 Installation and Initial Setup

Overview of Startup Procedure

Provides a step-by-step procedure for initial setup and connection of the Ethernet Unit.

Switch Settings

Explains how to set the Unit Number and Node Address using rotary switches for CS and CJ series.

Mounting to a PLC

Details the procedures for mounting Ethernet Units to CS-series and CJ-series PLC racks.

Network Installation

Covers basic installation precautions, recommended products, and cable laying guidelines.

Connecting to the Network

Explains Ethernet connector specifications and the procedure for connecting twisted-pair cables.

Creating I/O Tables

Describes how to create I/O tables for identifying and registering Units with the PLC.

Unit Setup Procedure

Details the steps for setting up the Ethernet Unit using CX-Programmer and the Web browser.

Basic Settings

Explains essential settings like IP Address, Subnet Mask, Baud Rate, and TCP/IP keep-alive.

Unit Setup for Particular Applications

Covers specific settings for FINS/UDP, FINS/TCP, Socket Services, FTP, Mail, and Mail Reception.

Communications Test

Describes how to perform communications testing using PING commands and checking status.

Converting from Previous Models

Details limitations and procedures for converting from previous Ethernet Unit models.

SECTION 3 CX-Programmer Unit Setup

Setup

Provides an overview of settings for broadcast, IP, subnet mask, FINS/UDP, FINS/TCP, and FTP.

FINS/TCP

Details FINS/TCP connection setup, including IP address protection and connection parameters.

DNS

Explains DNS server setup, including IP address, port number, and retry timer settings.

SMTP

Covers SMTP server setup for sending mail, including designation method, IP address, and port.

POP

Details POP server setup for receiving mail, including IP address, account name, and password.

Mail Address

Specifies destination mail addresses for sending mail from the Ethernet Unit.

Send Mail

Configures mail sending triggers, user data, error logs, and file attachments.

Receive Mail

Sets up mail reception, including attached file settings and command execution.

Auto Adjust Time

Configures automatic clock adjustment using SNTP server settings and designation methods.

HTTP

Details HTTP server setup, including Web function usage, password, and port number.

SECTION 4 Ethernet Unit Memory Allocations

CIO Area Allocations

Describes data stored in offset positions for Unit Control Bits and Socket Status.

DM Area Allocations

Details data stored in offset positions for FINS/TCP connection status and socket service parameters.

Auxiliary Area Data

Covers read-only and read/write bits/words related to communications port status and errors.

SECTION 5 Determining IP Addresses

IP Addresses

Explains IP address configuration, classes, allocation, Ethernet Unit settings, and subnet masks.

IP Addresses in FINS Communications

Details specifying nodes, pairing addresses, and application examples for FINS communications.

Private and Global Addresses

Differentiates between private and global IP addresses and their usage scenarios.

SECTION 6 FINS Communications

Overview of FINS Communications

Introduces FINS communications on Ethernet networks, methods, and service specifications.

FINS/UDP Method

Explains the FINS/UDP method, its features, frame format, and procedure for using it.

FINS/TCP Method

Details the FINS/TCP method, its characteristics, frame format, and connection management.

Creating Routing Tables

Guides on creating routing tables, including local and relay network tables, and setting examples.

Using FINS Applications

Covers connecting to PLCs using CX-Programmer (CX-Server) and FinsGateway.

Communicating between OMRON PLCs

Explains FINS commands (SEND, RECV, CMND) and PLC communications data areas.

Precautions on High Traffic in FINS Communications

Provides precautions and methods to avoid errors caused by high traffic in FINS communications.

SECTION 7 FINS Commands Addressed to Ethernet Units

Command Codes and Response Codes

Lists command codes and response codes for FINS commands sent to Ethernet Units.

Socket Applications

Describes the format of FINS commands when using sockets, including PLC memory areas.

Command/Response Reference

Details specific FINS commands, parameters, responses, and error codes for Ethernet Units.

SECTION 8 Troubleshooting

Troubleshooting with Indicators

Provides a guide to troubleshooting errors based on Ethernet Unit indicator statuses.

Error Status

Explains how to interpret error status bits in the CPU Unit's CIO Area for Ethernet Unit errors.

Error Log

Describes the error log content, location, and FINS commands for reading/clearing errors.

Troubleshooting Procedures

Offers step-by-step procedures for diagnosing startup, FINS, socket, FTP, and network connection issues.

Results Storage Area Response Codes

Lists UNIX socket service error messages and their probable remedies for troubleshooting.

Appendix A Ethernet Network Parameters

Web Function

Explains using a Web browser for Ethernet Unit settings and status monitoring.

Appendix B Buffer Configuration

Appendix C TCP Status Transitions

Appendix D ASCII Characters

Appendix E Maintenance

Replacing an Ethernet Unit

Provides precautions and procedures for replacing a defective Ethernet Unit.

Settings after Replacing an Ethernet Unit

Details the settings required after replacing an Ethernet Unit.

Settings after Replacing a CPU

Outlines information that must be stored in a new CPU to replace a defective one.

Appendix F Inspections

Items

Lists parts that make up the Ethernet Unit and emphasizes regular inspection.

Inspection Interval

Provides guidelines for choosing the inspection period based on operating conditions.

Inspection Items

Lists inspection items and their specified standards for environment and mounting.

Tools Required for Inspection

Lists standard tools and tools required under special circumstances for inspection.

Appendix G Ethernet Unit Web Function

Web Function

Explains how to use a Web browser for easy access to Ethernet Unit system settings and status.

Unit Setup Functions

Details the mapping between Web menu items and CX-Programmer functions for settings.

Status Monitor

Lists status information accessible via Web browser, including IP status, TCP status, and error logs.

Web Function Password

Explains the requirement for password entry for unauthorized access prevention and default password.

Using the Web Function (Setting Password)

Provides a procedure for setting the Unit’s system settings, such as the HTTP password.

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