Toshiba AS311 User Manual

UM-TS03***-E020

PROGRAMMABLE CONTROLLER

PROSEC

T3

ASCII INTERFACE MODULE

AS311

USER’S MANUAL

TOSHIBA CORPORATION

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 use of information, illustrations, circuits, equipment or examples of application in this publication.

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 other than 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, photocopying, recording, or otherwise  without obtaining prior written permission from Toshiba Corporation.

Publication number: UM-TS03***-E020 1st edition May 1995

Safety Precautions

• This module (AS311) has been designed for Toshiba’s Programmable Contr o ller PROSEC-T3 (hereaft er called T3). Use this module only on the T3’s rack .

• Read the Safety Precautions described on the T3 User ’s Manual bef or e using the T3 and this module.

• Follow the instructions described on this manual and on the T3 User’s Manual when installing and wiring the T3 and this module.

• Do not touch the connector pins or components on the pr inted circuit board of this module.

• The maximum number of AS311s that can be cont rolled by one T3 is not limited by

software. However, this module consumes maximum 1 A of int e r nal 5 Vdc power. Confirm that the total 5 Vdc consumed current per one power supply module is within the limit (7A).

Symbols Used In This Manual

Pay attention to information preceded by the following symbols.

HINT

NOTE

Refers to helpful sug gestions on how to operate effect ively.

Refers to inform ation considered essential for full under standing of operation. And refers to conditions that could dam age the equipment or render it temporarily inoperative.

User’s Manual

1

About This Manual

This manual explains the specifications and operations of the ASCII Interface Module (AS311) for Progr am mable Controller T3. Read this manual car efully before using the AS311 module.

Inside This Manual

This manual consists of six sections and an appendix as follows. Section 1 Overview

Introduces The AS311. Outline of the function, applications and the external features are provided in this section. Read this section at first to understand the general operation of the AS311. The switch settings of t his m odule are also explained in this section.

Section 2 Specifications Provides the functional and the transmission specifications of the AS311. Refer to this section to confirm the application limitations.

Section 3 Cable Connections Provides the information for hardware preparations. The transmission cable connection is explained in this section.

Section 4 Register Configuration Explains the memory contents of the AS311. This information is important to interchange data between T3 and AS311.

Section 5 Operation Procedure Provides the information to design the T3 program f or using the AS311. Some sample programs are provided in this section. Read t his sect ion carefully for progra m m ing.

Section 6 RAS Information Provides the helpful informa t ion for RAS (Reliability, Availability and Serviceability). Also, lists the check points in case of unexpected operat ions.

Appendix

The specifications of READ and WRITE instr uctions are described. These instructions are used for interchanging dat a bet ween T3 and AS311.

ASCII Interface Module (AS311)

2

About This Manual

Related Manuals

The following related manuals are available f or T3. Besides this manual, read the following manuals for your better understanding.

T3 User’s Manual - Hardware

This manual covers the T3’s main body and basic I/O - their specifications, handling, maintenance and services.

T3 User’s Manual - Functions

This manual explains the functions of the T3 and how to use them. The necessary information to create user pr ogram is covered in this manual.

T-series Instruction Set

This manual provides the detailed specifications of instructions for T oshiba’s T-series Programmable Controllers.

T-PDS (Ver. 1.4) Basic Operation Manual

This manual explains how to install the T-series program development system (T-PDS) into your computer and provides basic programming oper at ions.

T-PDS (Ver. 1.4) Command Reference Manual

This manual explains the T-series program development system (T-PDS) in detail.

T-PDS (Ver. 1.6) Expanded Functions

This manual explains the expanded functions on the T-PDS version 1.6. This manual supplements the T-PDS (Ver.1. 4) Com mand Reference Manual.

T-series Computer Link Function

This manual provides the information for a computer to communicate with T3 t hrough the T-series Programmable Cont r oller’s Computer Link function.

Terminology

The following terms and abbreviations are used in this manual.

• ASCII: American Standard Code for Information Interchange

• EIA: Electronic Industries Association

• I/O: Input/Output

• LED: Light Emitting Diode

• RS-232C: An EIA standard for data tr ansmission

• RS-422: An EIA standard for data tr ansm ission

User’s Manual

3

AS311 Overview

1.1 Introduction

1.2 AS311 functions

1.3 External features

User’s Manual

7

1. AS311 Overview

1.1 Introduction

The ASCI I interface module AS311 (hereaf ter called AS311) is a general purpose data communicat ion m odule for Toshiba’s Program mable Controller PROSEC-T3 (hereafter called T3) . By using t he AS311, T3 can communicate with external devices, such as a micro comput er, bar code reader, printer, display device, sensor, etc., through the serial inter face RS-232C or RS-422.

The AS311 has t wo ports of the serial interface. One port (channel 1) can be selected either RS- 232C or RS-422 by switch setting. The other port ( c hannel 2) is RS- 232C interface. These two ports can be used independently for data receiving and transmitting.

The t r ansm ission is asynchronous (st ar t - s t op system) . ASCII is used as t he transmission data code.

The figure below shows the typical system configuration.

NOTE

T3

CPU module

The maximum number of AS311 that can be cont rolled by one T3 is not limited by software. However, this module consumes maximum 1 A of int ernal 5 Vdc power. Confirm that the tot al 5 Vdc consum ed current per one power supply module is within the limit (7 A).

AS311

Channel 1 RS-232C or RS-422

Channel 2 RS-232C

ASCII Interface Module (AS311)

8

1. AS311 Overview

1.2 AS311 functions

From t he point of view of T3, the AS311 works as communications driver. The f ollowings are the simplified explanations for T 3 and AS311 functions.

When a message (one set of transmission characters) is received by AS311, the flag which indicates the receiving complete will come ON. T3 can check the flag status then read the m essage from the AS311 by using the READ instr u ct ion.

In case of transmitting a message (one set of transmission characters) from T3 through AS311, T 3 writes t he message into the AS311 by using the WRITE instruction, then sets the flag which instruct the AS311 to start t r ansm it t ing the message.

T3 AS311 Register Buffer memory READ Receiving

area Receiving Channel 1 WRITE Transmitting buffer area READ Receiving Transmitting area buffer WRITE Transmitting area Receiving Channel 2 buffer

Transmitting buffer

Here, a m essage (one set of transmission charact er s) means a string of ASCII character s which is ended by specified trailing code. The default set t ing of the trailing code is CR (carr iage return code = H0D).

Applicable messag e format (default trailing code):

1 2 3 4 N-1 N

CR

N: message length = 896 bytes max.

In other words, t he AS311 cannot be used for the data communication in which the transm ission m essage is ended by two or more types of trailing code.

User’s Manual

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1. AS311 Overview

↓

RSW

1.3 External features

AS311

•

RUN

•

TX1

•

RX1

•

TX2

•

RX2

ON

SW3

1 2 3

RESET

ON

→

SW1

SW2

→

1 2

CH1

CH2

Status LEDs

8 7 6 5 4 3 2 1

Channel 1 transmission parameter setting switches

8 7 6 5 4 3 2 1

Channel 2 transmission parameter setting switches

RS-232C/RS-422 selection switches Optional rotary switches

Hardware reset switch

Channel 1 serial port (RS-232C/RS-422) D-Sub 25-pin female connector

Channel 2 serial port (RS-232C) D-Sub 25-pin female connector

ASCII Interface Module (AS311)

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Status LEDs

RUN: Lit when AS311 is operating nor mally TX 1: Lit while transmit ting data from channel 1 RX1: Lit while receiving data to channel 1 TX 2: Lit while transmit ting data from channel 2 RX2: Lit while receiving data to channel 2

SW1  channel 1 transmission parameter setting switches

8 7 6 5 4 3 2 1

→

ON

No.8 … No use (set always ON)

No.7

OFF ON

Stop bit 2 bit 1 bit

No.6

OFF ON

Data bit length 7 bit 8 bit

No.5 No.4

OFF ON ON

OFF/ON OFF ON

Parity None Even Odd

SW1

1. AS311 Overview

No.3 No.2 No.1

OFF OFF OFF OFF ON ON ON OFF OFF ON ON OFF OFF ON OFF ON OFF ON OFF ON OFF

Baud rate 300 600 1200 2400 4800 9600 19200

SW2  channel 2 transmission parameter setting switches

Used to set t he transmission parameters for channel 2. The functions of each switch are the sam e as the SW1. Set t he transmission parameters independently for channel 1 and channel 2.

NOTE

The factory settings of the SW1 and SW2 are as shown above figure. That is, 1 stop bit, 8 data bits, odd parity and 9600 bps.

User’s Manual

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1. AS311 Overview

SW3  RS-232C/RS-422 selection switches (for channel 1)

1

2

3

→

ON

SW3

NOTE

The switches No.2 and No.3 should be set to ON when the AS311 is configured as terminal st at ion on the RS-422 transmission line. The factory settings of the SW 3 ar e all OFF.

RSW1/RSW2  Optional rotary switches

RSW1

C

80

RSW2

4 C

80

4

Used to select the interface of the channel 1 either RS-232C or RS-422.

No.1

OFF ON

Interface RS-232C RS-422

Used to connect the terminating resist or ( 120 Ω) between RXDA and RXDB. (Eff e ct ive for RS-422)

No.2

OFF ON

Terminating Not connect Connect

Used to connect the terminating resist or ( 120 Ω) between CTSA and CTSB. (Effective for RS-422)

No.3

OFF ON

Terminating Not connect Connect

Always set the RSW1 to 4 and the RSW2 to 0. (Other settings are f or future use)

Do not set other than above, otherwise the AS311 will not work correctly.

ASCII Interface Module (AS311)

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1. AS311 Overview

Hardware reset switch

When this switch is pressed, the AS311 will be reset. Use t his switch when you have changed the switch settings.

Channel 1 and channel 2 seri al ports

Used to connect the serial transmission line (RS-232C or RS-422). D- Sub 25-pin f em ale connectors are provided on the AS311. The pin assignment is as follows.

Channel 1 Channel 2 (RS-232C/RS-422) (RS-232C)

1 FG 2 TXD 3 RXD 4 RTS 5 CTS 6 6 DSR 7 SG 8 8 9 5 Vdc 10 TXDA 11 RXDA 12 RTSA 13 CTSA 14 14 15 15 16 16 17 17 18 18 19 19 20 DTR 21 TXDB 22 RXDB 23 RTSB 24 CTSB 25 25

• The arrow on the above figure shows the signal direction.

• FG is connected with the T3’s frame g r ound internally. (both channels)

• DTR and RTS are ON while power is on.

• Data transmitting is available when CTS is ON. DSR has no effect for t r ansm ission.

• Pin 9 (5 Vdc) can be used to supply 5 Vdc power. (total max. 50 mA)

↔ → ← for RS-232C → ←

↔

→ → ← for RS-422 → ←

→ for RS232C → ← for RS-422 → ←

1 FG 2 TXD 3 RXD 4 RTS 5 CTS

7 SG

9 5 Vdc 10 11 12 13

20 DTR 21 22 23 24

↔ → ← → ← ← ↔

→

User’s Manual

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ASCII Interface Module (AS311)

14

Section 2

Specifications

2.1 General specifications

2.2 Functional specifications

2.3 Transmission specifications

User’s Manual

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2. Specifications

2.1 General specifications

Item Specifications Remarks Power voltage 5 Vdc (supplied from back plane bus) Current consumption 1.0 A (5 Vdc) maximum Note (1) Environmental conditions Conforms to T3 specifications Insulation resistance Withstand voltage 500 Vac - 1 minute Note (2) Size T3 I/O module size (1 slot) Weight 500 g

Note (1) The T3’s power supply module can supply maximum 7 A of internal 5 Vdc. Check that the internal 5 Vdc current consum ption per one power supply module does not exceed the limit.

Note (2) Between interface connector pins and internal circuit.

10 MΩ (500 Vdc)

2.2 Functional specifications

Item Specifications Module type Serial communication interface I/O allocation type iX+Y 4W Buffer memory capacity 448 words x 4

(accessed from T3 by READ/WRITE instruction)

Transmission interface 2 channels;

Channel 1 … RS-232C or RS-422 (selectable) Channel 2 … RS-232C

Display Status LEDs;

RUN … lit when operating normally TX1 … lit while transmitting data from channel 1 RX1 … lit while receiving data to channel 1 TX2 … lit while transmitting data from channel 2 RX2 … lit while receiving data to channel 2

Connectable devices Computer, bar code reader, display device, sensor,

printer, or other serial ASCII device

RAS function Self diagnosis, watch dog timer ( 200 ms),

transmission error check, etc.

Note (2)

ASCII Interface Module (AS311)

16

2. Specifications

2.3 Transmission specifications

Item Channel 1 Channel 2 Interface RS-232C or RS-422 RS-232C Transmission mode Full-duplex Synchronizing St art-stop method (asynchronous) Transmission speed 300, 600, 1200, 2400, 4800, 9600, 19200 bps Frame format Start bit

Data Parity

Stop bit Transmission code ASCII Message length Max. 896 bytes Configuration One to one (Note) Transmission distance Max. 15 m (RS-232C)

Max. 1 km (RS-422) Connector D-sub 25-pin female D-sub 25-pin female

Note) In case of RS- 422 interface, multiple devices can be connected to one AS311 if the connected RS-422 devices work as slave stations and support multi-point connection. That is, the connected RS-422 devices must have the tr ansm ission generators which support the passive state. Also, the RS- 422 devices must support the message form at which contains the select ing address. In this case, the number of the connected RS-422 devices is limit ed up t o 10. On the other hand, the AS311’s transmission g enerator does not support the passive state. Therefore the AS311 m ust be t he master station in the one-to-N configuration.

1 bit 7 or 8 bits even / odd / none 1 or 2 bits

Max. 15 m

User’s Manual

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ASCII Interface Module (AS311)

18

Toshiba AS311 User Manual

Safety Precautions

About This Manual

Contents

AS311 Overview

1.1 Introduction

1.2 AS311 functions

1.3 External features

Specifications

2.1 General specifications

2.2 Functional specifications

2.3 Transmission specifications