Toshiba T2N Manuale utente

6F3B0362

UM-TS02N**-E006

T2N Ethernet Port

Instruction Manual

•Keep this instruction manual where it can be easily

referred to by users and those responsible for the

equipment.

•Read this instruction manual carefully before using

the equipment.

•After this instruction manual has been read, keep it

beside the equipment.

TOSHIBA CORPORATION

July, 1998

REQUIREMENTS

Main Menu

Contents

1

6F3B0362

Toshiba Corporation reserves the right to make changes and improvements to this

publication and/or related products at any time without notice. No obligation shall be

incurred, except as noted in this publication.

This publication is copyrighted and contains proprietary material. No part of this book

may be reproduced, stored in a retrieval system, or transmitted in any form or by any

means —electrical, mechanical, by photocopying, recording, or otherwise —without

obtaining prior written permission from Toshiba.

Important Information

Misuse of this equipment can result in property damage or human injury. Because

controlled system applications vary widely, you should satisfy yourself as to the

acceptability of this equipment for your intended purpose. In no event will Toshiba

Corporation be responsible or liable for either indirect or consequential damage or

injury that may result from the use of this equipment.

No patent liability is assumed by Toshiba Corporation with respect to the use of

information, illustration, circuits equipment, or application examples in this publication.

2

6F3B0362

Safety Precautions

Thank you for purchasing the Toshiba PU235N/245N CPU module, which is for use with the T2N

programmable controller.

This document describes the usage and handling of the PU235N/245N built-in Ethernet Port and

presents important cautionary items.

To use the PU235N/245N Ethernet Port safely, please read this document and all other related

documentation thoroughly and acquire thorough knowledge of the equipment and points that

require care before installing, operating, maintaining, or inspecting the PU235N/245N.

[Concerning Important Points]

1. The PU235N/245N is designed and manufactured for use with general industrial equipment,

including all types of production line control and manufacturing equipment.

The PU235N/245N is not designed or manufactured for use in equipment or systems on which

human lives depend.

Consult with your Toshiba sales representative in advance if you need to use an

PU235N/245N in a equipment or systems that are used in transportation equipment (such as

trains), medical applications, aerospace applications, nuclear reactor control, or underwater

relay equipment or other special contexts.

2. Although the PU235N/245N is manufactured under strict quality control, if an PU235N/245N

is to be used in critical equipment in which human lives could be endangered or in which large

losses could occur should the PU235N/245N fail, install safety equipment so that such

catastrophes cannot occur.

3. The PU235N/245N should only be installed, wired, used, or maintained by persons who have

a general knowledge of the handling of control equipment. Electrical shock, fires, failures, and

malfunctions can occur if an PU235N/245N is handled incorrectly. Persons whose knowledge

of control and electrical equipment is inadequate should avoid installing, wiring, using, or

maintaining this equipment, and should instead employ persons with the requisite specialized

knowledge.

4. This document and the related separate documentation is written for persons with a general

knowledge of programmable controllers and control equipment.

If you have any questions about the contents of this documentation, please feel free to contact

you Toshiba representative.

3

6F3B0362

Safety Precautions (continued)

[Warning indications]

This instruction manual provides important information to allow these products to be used safely

and correctly, to prevent in advance dangers to people managing or using this equipment or other

persons, and to prevent in advance losses to property. Be sure you thoroughly understand the

displays and symbols described below and follow the cautionary items and warnings included in

this document carefully.

Store this document carefully so that you can refer to it at any time even after you have read it.

Description of Safety Signs

Safety sign Meaning

WARNING Indicates a potentially hazardous situation which could result in

death or serious injury if you do not follow the instructions.

CAUTION Indicates a potentially hazardous situation which may result in

minor or moderate injury and/or property damage if you do not

follow the instructions.

Explanations of Safety Symbols

Safety symbol Meaning

This means "Hazard Alert" or "Beware of Hazard". The exact

nature of the hazard is shown in the triangle or described in text

near the triangle.

This is a safety alert symbol indicating a potential hazard. This

symbol is used together with a signal word.

4

6F3B0362

Safety Precautions (continued)

•Precautions for operation

WARNING

1. Build emergency stop, interlock, and similar circuits outside the PU235N/245N.

If a breakdown or malfunction occurs in the PU235N/245N, there is the danger that someone could

be hurt or fatally injured. Also, other equipment could be damaged or a breakdown could occur.

T2N User's Manual - Hardware

3. Preparing for Operation (Hardware)

CAUTION

1. Take all necessary safety precautions before performing operations such as changing a running

program, forcing output, or switching to RUN (operate) or HALT (stop) modes.

Equipment can be damaged and breakdowns can be caused by operating this equipment

incorrectly.

T2N User's Manual - Hardware

Program Operation Manual

3. Preparing for Operation (Hardware)

5

6F3B0362

Safety Precautions (continued)

•Mounting in the base unit

CAUTION

1. The Ethernet Port is built-in the PU235N/245N. Do not remove the Ethernet Port from a

PU235N/245N.

2. The PU235N/245N itself should only be mounted or removed when all power is turned off. Similarly,

connections to the terminal block should only be made or removed when all power is turned off. Not

observing this precaution could result in electrical shocks, malfunctions, or damage to the

PU235N/245N or other equipment.

3. Do not allow foreign objects such as wire shreds to get into the PU235N/245N. This could result in

fire, breakdown, or malfunction.

4. Verify that connectors, cables, and the mounting of the PU235N/245N itself in the base unit are all

secured and that there is no play, missing screws, or disconnections in any of these parts.

If any of these parts is inadequately secured, breakdown or malfunction could occur as the result of

vibration.

3.3 Mounting in the Base Unit

•Connecting to the network

CAUTION

1. Do not connect or disconnect cables when either the T2N or HUB power supply is turned on. This

can damage the PU235N/245N or cause it to malfunction.

2. When installing a 10BASE-T network, the cabling must be laid with adequate safety precautions and

in accordance with all applicable standards. Installation and wiring should be performed by a

qualified professional.

See the ISO/IEC8802-3 standard for installation environment standards.

3.1 Connecting to the Network

6

6F3B0362

Safety Precautions (continued)

Concerning:

•Preparing for operation (software)

•Computer link protocol and the PC link protocol transmission

•Socket interface communication

•RAS information

CAUTION

1. Chapters 4 - 7 present information related to using the functions provided by the Ethernet Port from

a T2N, including the instruction (request) format, important items that require attention, and sample

programs. That chapter also presents items considered necessary when using the Ethernet Port.

Make a point of understanding the content of chapter 4 thoroughly before writing programs that use

the Ethernet Port. The sample programs present basic examples of Ethernet Port usage, and should

be reviewed carefully before use in an actual system.

4. Preparing for operation (software)

5. Computer link protocol and the PC Link protocol transmission

6. Socket interface communication

7. RAS information

•Installation environment and base unit mounting

CAUTION

1. Only use this equipment in the environment described in the T2N User's Manual - Hardware.

Use in any other environment can cause electrical shocks, fires, failures, and malfunctions.

2. Mount this equipment according to the mounting method specified in the T2N User's Manual -

Hardware.

Mounting in any direction other than the specified direction, or defective or inadequate mounting,

can result in the equipment falling, fires, failures, and malfunctions.

9.1 Installation Environment and Base Unit Mounting

7

6F3B0362

Safety Precautions (continued)

•Basic points in laying out a network

CAUTION

1. When laying network cable, take adequate safety measures and perform all operations in

accordance with the relevant standards. See the ISO/IEC8802-3 standard for details on laying

networks.

2. We strongly recommend hiring a qualified contractor who has specialized knowledge about safety

precautions and standards.

3. Avoid installing 10BASE5, 10BASE2 or 10BASE-T networks in environments that have high noise

levels. If it is necessary to install network cables in an environment subject to noise (electromagnetic

interference), use the noise reduction measures described elsewhere in this document.

9.2 Network Wiring

•Maintenance

CAUTION

1. Always turn off the power before attaching or removing modules or cables. Electrical shock,

malfunctions, and breakdowns are possible if these operations are performed with the power on.

2. To keep the system operating normally at all times and to prevent trouble in advance, perform daily

inspections, periodic inspections, and cleaning.

3. Refer to the section on error recovery in this document if the Ethernet Port does not operate

correctly.

Contact your local Toshiba dealer or service representative if a breakdown occurs, and request that

the module be repaired or returned to Toshiba.

Operation and safety cannot be guaranteed if service is performed by anyone other than an

authorized Toshiba service representative.

4. Do not disassemble or modify the module hardware, and do not modify the module software.

Breakdowns or malfunctions may lead to fire, electrical shock, or injury.

5. Do not continue to use the module if it emits smoke or unusual odors, or if it is in an abnormal state

of any type.

Using the module in an abnormal state can lead to malfunctions, breakdowns, and electrical shock.

In such cases, immediately turn of all power and contact your local Toshiba dealer or service

representative.

Customers should never attempt repairs or modifications to this equipment themselves: repair and

modification operations are extremely dangerous.

Appendix 1 Maintenance and Inspection

8

6F3B0362

Usage Recommendations

This section collects the knowledge and operations that should be known by all users of this

equipment. Read this section carefully in conjunction with the safety precautions, thoroughly

master knowledge of the equipment, safety information, and the items that require attention, and

use the equipment correctly.

•Support for 10BASE-T network

Usage Recommendations

1. Do not exceed the maximum cable length (100 m) in systems using 10BASE-T.

1.3 Basic Functionality

•Ethernet Port registration

Usage Recommendations

1. Before performing the settings described in this chapter, register the Ethernet Port as T2N I/O. The

I/O type is ETHER (PU235N) or E/S (PU245N).

4.1 Ethernet Port Setup Flowchart (Software)

•Restrictions on subnet masks

Usage Recommendations

1. The Ethernet Port does not allow the user to set the subnet mask. The Ethernet Port that the

network address number is 1 can use the subnet mask. Therefore the Ethernet Port cannot be used

in systems that operate a subnetwork.

4.4 Parameter Setup Request

9

6F3B0362

Usage Recommendations (continued)

•Computer link protocol transmission

Usage Recommendations

1. Since UDP/IP does not provide control functions to guaranteed communication reliability, higher

level protocols (such as retry) are required.

2. No processing is performed if a computer link protocol and a PC link protocol transmission

messages are received at any point other than a message transmission UDP socket.

5.1 Computer Link Protocol Transmission

5.3 PC Link Protocol Transmission (Data write)

5.4 PC Link Protocol Transmission (Data read)

•Limitations on the T2N SEND and RECV instructions

Usage Recommendations

When using the SEND and RECV instructions:

1. When using fixed period interrupt programs, there are limitations on the number of words that can

be specified.

Appendix 4 Limitations on the T2N SEND and RECV Instructions

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