Toshiba T2N User manual

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

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©Copyright 1998 by Toshiba Corporation Tokyo, Japan
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.

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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.

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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.

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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)

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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

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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

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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

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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

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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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Before Reading This Document
Thank you for purchasing a Toshiba PROSEC T2N multi-purpose programmable controller.
This manual describes the T2N Ethernet Port specifications and usage, and presents sample
programs for the Ethernet Port used with the PROSEC T2N.
The PU235N has Ethernet Port and the PU245N has Ethernet and TOSLINE-S20LP Port.
The T2N Ethernet Port is built-in a T2N and the T3H Ethernet module is independent module. It is
called “port”with this manual and called “station”with Ethernet Module EN311 for T3H
Instruction Manual are same meaning. This manual describes port.
When using this product, use the product correctly based on a thorough reading of this manual.
When using a T3H Ethernet module, see “Ethernet Module EN311 for T3H Instruction Manual”.
This document is organized as follows.
Chapter 1: Ethernet Port Overview
Presents an overview of the PU235N/245N Ethernet Port, including its functions, specifications,
and systems in which it can be used. Refer to this chapter to understand the basic performance of
the Ethernet Port.
Chapter 2: Ethernet Port Parts and Functions
Describes the function and names of the components of the Ethernet Port. Since this chapter
presents information required to understand the hardware settings described in the next chapter,
read this chapter carefully and use the Ethernet Port correctly.
Chapter 3: Preparing for Operation (Hardware)
Describes the hardware preparations and settings required to operate the Ethernet Port normally.
Chapter 4: Preparing for Operation (Software)
Describes the software settings required to operate the Ethernet Port normally, and presents
sample programs.
Chapter 5: Computer Link Protocol and the PC Link Protocol Transmission
Describes the instruction format used with computer link protocol and PC link protocol
transmission, and presents sample programs.
Chapter 6: Socket Interface Communication
Presents an overview of the socket interface, cautionary items, and the instruction format used on
the Ethernet Port with the socket interface, and presents sample programs.
Chapter 7: RAS Information
Describes the instruction format and the format of the Ethernet Port RAS information (including
port status and down information), and presents sample programs.
Chapter 8: Error Handling
Describes techniques for determining the causes of errors when Ethernet Port operation is
abnormal, and procedures for recovering from those errors.

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Chapter 9: Installation and Wiring
Describes the procedures for installing the Ethernet Port (and T2N), procedures for laying
transmission cable, and the nature of the construction required.
Appendix
Presents request code, completion status value, and error code tables and describes the minimum
transmission delay times and execution times for each instruction.
Note that in addition to this manual, Toshiba also provides a T2N User's Manual - Basic
Hardware and Function, a T-series Instruction Set, and a T-series Computer Link Operation
Manual. All these manuals should be read together.
•T2N User's Manual - Basic Hardware
and Function
(UM-TS02∗∗-E001)
•T-series Instruction Set
(UM-TS03∗∗∗-E004)
•T-series Computer Link Operation Manual
(UM-TS03∗∗∗-E008)
Registered trademarks:
Ethernet is a registered trademark of Xerox Corporation.
Cheapernet is not a registered trademark, but rather is a common name.
3 Com and Etherlink III are trademarks of 3 Com Corporation.
PC-NFS Pro is trademarks of Sun Microsystems, Inc..
Visual Ctt is trademarks of Microsoft Corporation.
Microsoft is trademarks of Microsoft Corporation.
UNIX is trademarks of UNIX System Laboratories, Inc..
Describes the configuration, specifications,
installation and wiring techniques,
maintenance, and preventive maintenance
procedures for the T2N base system hardware
and describes the function provided by the
T2N CPU and the use of that CPU, and
presents information required for creating user
programs for the T2N.
Describes the detailed specifications of the
instruction words for the ladder and SFC
program languages, which are two of the
programming languages supported on the T2N.
Describes the specifications and use of
computer link protocol transmission, which is
built into the T2N CPU.

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Contents
Safety Precautions………………………………………………………………………… 2
Usage Recommendations …………………………………………………………………8
Before Reading This Document……………………………………………………………10
1. Ethernet Port Overview………………………………………………………………… 14
1.1 System Configuration Using the Ethernet Port……………………………………… 14
1.2 LAN Standards and Terminology ……………………………………………………15
1.3 Basic Functionality …………………………………………………………………16
1.4 Ethernet Port Specifications…………………………………………………………21
1.5 Software Organization ………………………………………………………………22
2. PU235N/245N Parts and Functions …………………………………………………… 24
2.1 Front Panel…………………………………………………………………………24
2.2 Component Functions………………………………………………………………25
3. Preparing for Operation (Hardware)…………………………………………………… 26
3.1 Connecting to the Network………………………………………………………… 27
3.2 Network Wiring Equipment………………………………………………………… 28
4. Preparing for Operation (Software) …………………………………………………… 31
4.1 Ethernet Port Setup Flowchart (Software) ……………………………………………31
4.2 Ethernet Port Instruction Specifications………………………………………………32
4.3 Ethernet Port Reset…………………………………………………………………39
4.4 Parameter Setup Request………………………………………………………… 41
4.5 Operating Mode Control Requests………………………………………………… 46
5. Computer Link Protocol and the PC Link Protocol Transmission ……………………… 50
5.1 Computer Link Protocol Transmission ………………………………………………50
5.2 Sample Computer Link Protocol Program ……………………………………………51
5.3 PC Link Protocol Transmission (Data write) …………………………………………57
5.4 PC Link Protocol Transmission (Data read)………………………………………… 61
5.5 Sample PC Link Protocol Transmission Program…………………………………… 64

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6. Socket Interface Communication ……………………………………………………… 68
6.1 Overview ………………………………………………………………………… 68
6.2 Ethernet Port Socket Interface Usage Notes………………………………………… 72
6.3 Socket Interface Information ………………………………………………………82
6.4 Using the Ethernet Port Socket Interface ……………………………………………84
6.5 Sample Programs …………………………………………………………………112
7. RAS Information ………………………………………………………………………122
7.1 T2N Special Relays and Registers………………………………………………… 123
7.2 Down Information …………………………………………………………………125
7.3 Remote Port Verification Request………………………………………………… 126
7.4 Remote Port Loopback (for an Ethernet Port) ……………………………………128
7.5 Time Setting ………………………………………………………………………130
7.6 RAS Information Readout …………………………………………………………132
8. Error Handling …………………………………………………………………………140
8.1 LED Display ………………………………………………………………………140
8.2 Status (error status) ………………………………………………………………143
8.3 T2N Special Relays and Registers …………………………………………………146
8.4 Socket Interface Information ……………………………………………………… 147
8.5 Troubleshooting ………………………………………………………………… 148
9. Installation and Wiring …………………………………………………………………163
9.1 Installation Environment and Base Unit Mounting……………………………………163
9.2 Network Wiring ……………………………………………………………………164
Appendix
Appendix 1 Maintenance and Inspection ………………………………………………169
Appendix 2 Request Code Table ………………………………………………………171
Appendix 3 Status Table ………………………………………………………………172
Appendix 4 Limitations on the T2N SEND and RECV Instructions ……………………… 175

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1. Ethernet Port Overview
1.1 System Configuration Using the Ethernet Port
This section describes the systems that can be configured using the PU235N/245N Ethernet Port
for the PROSEC T2N programmable controller. The remainder of this document refers to the
PROSEC T2N programmable controller as the T2N, and the Ethernet Port as the PU235N/245N
Ethernet Port.
The Ethernet Port is a communication port for connecting a T2N system to a 10BASE-T (Twisted
pair Ethernet) LAN (local area network). It is operated a T2N option module. The T2N connects
to the above mentioned LAN through the Ethernet Port and exchanges data with host computers
(workstations or personal computers) or other programmable controllers on the LAN.
The remainder of this section presents a system that uses the Ethernet Port. In this example, the
T2N is connected to host machines such as workstations and personal computers over a 10BASE-
T LAN and the T2N is connected to lower level controllers using a Toshiba proprietary control
LAN.
HUB
S
2
0
L
P
T
3
H
S
2
0
L
P
T
2
N
E
T
H
E
R
I/OI/O
T
2F 1
0
R-I/O R-I/O
TOSLINE-S20LP
T3H:PROSEC-T3H
T2N:PROSEC-T2N
T2 :PROSEC-T2
S20LP:TOSLINE-20LP
F10:TOSLINE-F10
R-I/O: Remote I/O for F10
T
2
N
E
T
H
E
R
S
2
0
L
P
T
2
N
E
T
H
E
R
S
2
0
L
P
T
3
H
I/OI/OI/O
I/O I/O
F
1
0
10BASE-T
PU245N
PU245N
PU235N
TOSLINE-F10
Figure 1.1 System Configuration Examples
Host machine
Personal computer
Workstation

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1.2 LAN Standards and Terminology
The LANs commonly referred to as Ethernet LANs are defined by two standards, the Ethernet
version 2.0 standard (DIX) developed by DEC, Intel, and Xerox, and the ISO 8802-3 standard
(IEEE 802.3), which is an international version of the DIX standard. Since the ISO 8802-3
includes the DIX standard, network equipment built to those standards will be basically
compatible.
Since the Ethernet Port physical layer has a structure that conforms to the ISO 8802-3 standard,
users must be sure to use network equipment that conforms to the ISO 8802-3 standard.
The networking terminology used in this document is the terminology used in the ISO 8802-3
standard. Table 1.3 presents the correspondence between the DIX standard terminology (common
terms) and the ISO 8802-3 standard terminology.
Table 1.1 Networking Terminology Correspondences
DIX Standard ISO 8802-3 Standard
Ethernet
Cheapernet
Coaxial cable
Transceiver cable
Transceiver
Ethernet address
10BASE5
10BASE2
Coaxial cable
AUI (attachment unit interface) cable
MAU (medium attachment unit)
MAC address
Ethernet is a registered trademark of Xerox, Corporation.
Cheapernet is not a registered trademark, but rather is a common name.

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1.3 Basic Functionality
The Ethernet Port has the following main features.
1. T series computer link protocol transmission (slave port)
The host machine can upload or download user programs, execute control commands, and read or
write register data to a T2N on the 10BASE-T LAN using the T series computer link protocol.
This function can be used simply by making basic settings on the Ethernet Port from the T2N;
there is no need to write special user programs for the T2N.
Computer link protocol uses UDP/IP as the transmission protocol.
UDP/IP: User datagram protocol/Internet protocol.
Application
program
Host machine
Personal computer
Workstation
Ethernet
Port
T2N operating
system
Response 10BASE-T
Request
User program
Figure 1.2 T Series Computer Link Protocol Transmission (slave port)

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2. T series/PC link protocol transmission
The T2N can use the T series/PC link protocol to read or write register data on another T2N on the
10BASE-T LAN.
While T2N user programs for reading and writing are necessary to use the host functions, only the
basic Ethernet Port settings performed from the T2N are required to use the slave functions, and no
special user programs are required on the T2N.
PC link protocol transmission uses UDP/IP as the transmission protocol.
UDP/IP: User datagram protocol/Internet protocol .
Response 10BASE-T
Request
Ethernet
Port
T2N operating
system
User program
Ethernet
Port
T2N operating
system
User program
PC link host station
PC link slave station
Figure 1.3 T Series/PC Link Protocol Transmission

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3. Socket interface support
This is a standard communications technique used on engineering workstations and similar
computers. Transmission between user programs on the T2N and host machines is possible using
the socket interface. There are eight sockets on an Ethernet Port and the transmission protocol
(TCP/IP or UDP/IP) can be specified for each socket.
TCP/IP: Transmission control protocol/Internet protocol
UDP/IP: User datagram protocol/Internet protocol
Application
program
Host machine
Personal computer
Workstation
Ethernet
Port
T2N
10BASE-T
User program
Socket
Socket
Data transmission
Figure 1.4 Socket Interface

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4. PC (programmable controller) gateway function
∗This function is under development, but is currently not supported.
Toshiba plans to add support to the T2N for a gateway function between the Ethernet Port and the
TOSLINE-S20LP Port. This function will allow access to stations (PROSEC-T3H/T2N) on the
TOSLINE-S20LP from ports on the 10BASE-T LAN using the computer link protocol.
Application
program
Host machine
Personal computer
Workstation
T2N operating
system
Response 10BASE-T
Request
TOSLINE-
S20LP Port
TOSLINE
-S20LP
T3H
TOSLINE
-S20LP
T3H
TOSLINE
-S20LP
T2N
Response Request
TOSLINE-S20LP
PU245N
Ethernet
Port
Figure 1.5 Gateway Function