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

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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)

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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

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AS311 Overview

1.1 Introduction

1.2 AS311 functions

1.3 External features

User’s Manual

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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)

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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.

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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

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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.

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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.

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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

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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)

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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

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ASCII Interface Module (AS311)

18

Section 3

Cable Connections

3.1 RS-232C connection

3.2 RS-422 connection

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3. Cable Connections

3.1 RS-232C connection

The following figure shows the RS-232C connection.

AS311 Shielded cable RS-232C device

FG

1

TXD

2

RXD

3

RTS

4

CTS

5

(DSR)

6

SG

7

DTR

20

(1) DSR is suppor ted only on the channel 2. (2) Connect SG each other. (3) Use shielded cable. The cable shield should be connected to FG at one end. (4) I t is recommended to use twisted cable for noise imm unity.

NOTE

Do not connect or remove the connector while the AS311 is powered. Otherwise, it will cause damage to the AS311.

RXD TXD DTR SG DSR RTS CTS

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20

3. Cable Connections

3.2 RS-422 connection

The channel 1 can be select ed eit her RS-232C or RS-422. The following figure shows the RS-422 connect ion.

AS311 Shielded cable RS-422 device

FG

1 10 21 11 22 7 12 23 13 24

TXDA TXDB RXDA RXDB SG RTSA RTSB CTSA CTSB

FG RXDA RXDB TXDA TXDB SG CTSA CTSB RTSA RTSB

R

(1) O n the AS311, connect the built-in terminating resistors (120 Ω) between RXDA and RXDB and bet ween CTSA and CTSB by setting switches. (Set t he SW3-2 and SW3-3 to ON) (2) O n the RS-422 device, connect the terminating resist ors R (120 Ω - 1/2 W) between RXDA and RXDB and between CTSA and CTSB. (3) Connect SG each other. (4) Use shielded t wisted-pair cable. The A (+) and B (-) of the same signal should be paired. (5) The cable shield should be connected to FG at one end.

NOTE

Do not connect or remove the connector while the AS311 is powered. Otherwise, it will cause damage to the AS311.

User’s Manual

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ASCII Interface Module (AS311)

22

Section 4

Register Configuration

4.1 I/O allocation and I/O registers

4.2 AS311 buffer memory

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4. Register Configuration

4.1 I/O allocation and I/O registers

The AS311 has the I/O type ‘ allocation is perf ormed with mounting the AS311, the f ollowing I/O allocation table will be created in t he T3.

(T - PDS scr een example - in t he case that AS311 is mounted on Slot 0 of Unit 0)

i X+Y 4W

’ for I/O allocation. When the automatic I/O

Then, 4 I/O registers, XW(n), XW(n+1), YW(n+2) and YW(n+3), are assigned to the AS311. In the above example, X W000, XW001, YW002 and YW003 are assigned.

Note that the I/O type has ‘i’ designation. It means that t he T3 will not update the assigned I/O registers in the batch I/O processing. To read or write data through the I/O registers, the Direct I/O instruction (FUN235) or the direct I/O designation (I/IW and O/OW instead of X/XW and Y/YW) is necessary. The r eason of that is because the reading and writing timings are important f or handshaking between T3 and AS311. Refer to section 5.

ASCII Interface Module (AS311)

24

4. Register Configuration

The following table shows the functions of I/O registers assigned to the AS311.

XW(n) CH1 status XW(n+1) CH2 status YW(n+2) CH1 command YW(n+3) CH2 command

Register Bit Name Description F Write ready 1: ready to write data (transmit) for channel 1 E Transmit complete 1: transmitting has been completed normally D Transmit error 1: transmitting has been canceled by error XW(n) C - 8 − No use (always 0) (CH1) 7 Read ready 1: ready to read the received data 6 Receive complete 1: receiving for channel 1 has been completed 5 Receive error 1: receiving error has occurred 4 - 0 − No use (always 0) F Write ready 1: ready to write data (transmit) for channel 2 E Transmit complete 1: transmitting has been completed normally D Transmit error 1: transmitting has been canceled by error XW(n+1) C - 8 − No use (always 0) (CH2) 7 Read ready 1: ready to read the received data 6 Receive complete 1: receiving for channel 2 has been completed 5 Receive error 1: receiving error has occurred 4 - 0 − No use (always 0) F T ransmit start Set to 1 to start transmitting data fr om channel 1 YW(n+2) E - 8 − No use (set to 0) (CH1) 7 Read star t Set to 1 to start reading data for channel 1 6 - 0 − No use (set to 0) F T ransmit start Set to 1 to start transmitting data fr om channel 2 YW(n+3) E - 8 − No use (set to 0) (CH2) 7 Read star t Set to 1 to start reading data for channel 2 6 - 0 − No use (set to 0)

NOTE

F E D C B A 9 8 7 6 5 4 3 2 1 0

No use No use No use No use No use No use No use No use

These bits are used for handshak ing between T3 and AS311. The detailed function and timing are explained in section 5.

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4. Register Configuration

4.2 AS311 buffer memory

As explained in the previous section, the I/O registers that are assigned to AS311 are used to cont rol the reading and writing timings ( handshake) between T3 and AS311.

On the ot her hand, for exchanging the transmission data between T3 and AS311, the AS311’s buf fer memory is used.

This sect ion explains the buffer memory contents and how to access the buffer memory.

4.2.1 Memory map

The AS311 has t he buffer memory that is used to exchange data with T3. The overall map of the buffer me m or y is as follows.

Address W ord data

0 Stat us and com mand 4 words - same data as I/O registers 4 Parameter

128 Channel 1

reading (receiving)

data area

576 Channel 1

writing (transmitting )

data area

1024 Channel 2

reading (receiving)

data area

1472 Channel 2

writing (transmitting )

data area

1920 Access inhibited

124 words - transmission parameters, etc.

448 words

128 words

ASCII Interface Module (AS311)

26

4. Register Configuration

4.2.2 Buffer memory access

T3 can r ead t he AS311’s buffer memory contents by using READ inst ruction (FUN237). Also, T 3 can write dat a into the buffer me m or y by using WRITE instruction (FUN238).

READ instruction (FUN237)

Expression: [ (A) READ (B) → (C) ]

Operands: (A): I/O register (XW/YW) assigned to the AS311

(B): Starting address of the buffer memory to be read (B)+1: Number of words to be read (max. 256) (C): Starting register of the destination

Example: R0100

[ 00128 MOV D5000 ] [ 00064 MOV D5001 ] [ X W000 READ D5000 → D1000 ]

When R0100 is ON, 64 words of buffer memory data star t ing with address 128 are read from the AS311 which is allocated to XW000. And the dat a ar e st ored in D1000 and after.

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4. Register Configuration

WRI TE inst ruct i on (FUN238)

Expression: [ (A) WRITE (B) → (C) ]

Operands: (A): Starting register of the source

(B): Starting address of the buffer memory to be written (B)+1: Number of words to be written (max. 256) (C): I/O register (XW/YW) assigned to the AS311

Example: R0101

[ 00576 MOV D5000 ] [ 00100 MOV D5001 ] [ D2000 WRITE D5000 → YW002 ]

When R0101 is ON, 100 words of data starting with D2000 (D2000 to D2099) are written into the buffer memory address 576 and after of the AS311 which is allocated to YW 002.

ASCII Interface Module (AS311)

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4. Register Configuration

4.2.3 Parameter area

The par am et er area of the buff er m em or y contains t he following contents. Address Address

0 CH1 status 64 1 CH2 status Status and 65 2 CH1 command command 66 3 CH2 command 67 4 Status 1 68 5 RSW1/2 information 69 6 SW1 information 70 7 SW2 information 71 Reserved 8 CH1, CH2 72

9 common 73 10 parameters 74 11 75 12 Command 1 76 13 77 14 78 15 79 16 CH1 receive error 80 CH2 receive error 17 CH1 transmit error 81 CH2 transmit error 18 CH1 channel status 82 CH2 channel status 19 CH1 receive length 83 CH2 receive length 20 84 21 85 22 86 23 87 24 CH1 trailing code 88 CH2 trailing code 25 CH1 time-out check CH1 89 CH2 time-out check CH2 26 parameters 90 parameters 27 91 28 92 29 93 30 94 31 95

63 127

Note: Blanks are for fut ur e use. ( Reser ved)

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4. Register Configuration

Status and command (0 - 3)

The addresses 0 to 3 store the same data as the I/O registers that are assigned to the AS311. Refer to section 4.1 f or details.

0 CH1 stat us = XW( n) 1 CH2 stat us = XW( n+1) 2 CH1 comm and = YW ( n+2) 3 CH2 comm and = YW ( n+3)

Status 1 (4)

The address 4 shows the AS311 module status. If an er r or has occurred in the AS311, the error code is stored here.

F E D C B A 9 8 7 6 5 4 3 2 1 0

RDY ERR 0 0 0 0 0 0 Error code

4

Bit F RDY (Ready) 1 = operating normally Bit E ERR (Error) 1 = error state Bit 7-0 Er r o r code Shows the detected error item if ERR is 1.

RSW1/2 information (5)

The address 5 stores the rotary switches RSW1 and RSW 2 setting status.

F E D C B A 9 8 7 6 5 4 3 2 1 0 0 0 0 0 0 0 0 0 RSW1 RSW2

5

Bit 7-4 RSW1 Stores the rotary switch 1 (RSW1) setting status. Bit 3-0 RSW2 Stores the rotary switch 2 (RSW2) setting status.

0 = under initialization or error state 0 = no error (normal) (H00 when normal)

See section 6.2.1 for details.

0 - F 0 - F

ASCII Interface Module (AS311)

30

SW1 information (6)

The address 6 stores the setting status of the channel 1 transmission parameter set ting switches (SW1).

6

OFF ON

ON: 1 OFF: 0

SW2 information (7)

The address 7 stores the setting status of the channel 2 transmission parameter set ting switches (SW2).

7

OFF ON

ON: 1 OFF: 0

4. Register Configuration

F E D C B A 9 8 7 6 5 4 3 2 1 0 0 0 0 0 0 0 0 0 SW1

SW1

8 7 6 5 4 3 2 1

F E D C B A 9 8 7 6 5 4 3 2 1 0 0 0 0 0 0 0 0 0 SW2

SW2

8 7 6 5 4 3 2 1

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4. Register Configuration

Command 1 (12)

The address 12 is used to reset the AS311 by T3 progr am . Two types of reset commands are available, hot reset and cold r eset . The hot reset is used to change the tr ailing code and the time-out check time set t ings. The cold reset is used to initialize the AS311. The t r ailing code and the time-out check time will be reset to the default sett ing . The operation of the cold reset is the same as the hard reset switch and power on initialization. Refer to sections 5.5, 5.6 and 5. 7 for these functions.

F E D C B A 9 8 7 6 5 4 3 2 1 0

RST 0 0 0 0 0 0 0 Command number

12

Bit F RST (Reset) 1 = reset request Bit 7-0 Com mand

number

CH1 receive error (16) and CH2 receive error (80)

The address 16 (for channel 1) and the addr ess 80 ( for channel 2) indicate the error contents if an error has been detect ed in r eceiving a message. This inform at ion is set during the received message read sequence. Refer to section 6.2.3 for details.

16 or 80

F E D C B A 9 8 7 6 5 4 3 2 1 0 0 0 0 0 BRK PE FE OE Receive error code

Bit B BRK ( Br eak) 1 = break detected Bit A PE ( Par ity error) 1 = parity error Bit 9 FE

(Framing error)

Bit 8 OE

(Overrun error)

Bit 7-0 Receive err or

code

0 = normal (no reset request) HFE = hot reset HFF = cold reset

0 = normal 0 = normal

1 = framing error 0 = normal 1 = overrun error 0 = normal Shows the error code regarding received message. (H00 when normal) See section 6.2.3 for details.

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CH1 transmit error (17) and CH2 transmit error (81)

The address 17 (for channel 1) and the addr ess 81 ( for channel 2) indicate the error contents if an error has occurred dur ing message transmitting . This information is set during the write sequence for m essage transmitting. Refer to section 6.2.4 for details.

17 or 81

CH1 channel status (18) and CH2 channel status (82)

The address 18 (for channel 1) and the addr ess 82 ( for channel 2) indicate the control signal status. This inf or m ation is always updated.

18 or 82

Note: (1) The channel 1 does not support DSR. Therefore, bit 7 of the address 18 is always 0. ( 2) The bit 2 is always 1.

F E D C B A 9 8 7 6 5 4 3 2 1 0 0 0 0 0 0 0 0 0 Transmit error code

Bit 7-0 Transmit error

code

F E D C B A 9 8 7 6 5 4 3 2 1 0 0 0 0 0 0 0 0 IDL DSR 0 0 0 CTS 1 0 0

Bit 8 IDL (Idle) 1 = transmitter is idle state Bit 7 DSR

(Data set ready)

Bit 3 CTS

(Clear to send)

4. Register Configuration

Shows the error code for transmitting. (H00 when normal) See section 6.2.4 for details.

0 = transmitter is non-idle state 1 = DSR is ON 0 = DSR is OFF Note (1) 1 = CTS is ON 0 = CTS is OFF

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4. Register Configuration

CH1 receive length (19) and CH2 receive length (83)

The address 19 (for channel 1) and the addr ess 83 ( for channel 2) indicate the length of the received message (number of bytes) . This information is set during the received message read sequence.

19 or 83

CH1 trailing code (24) and CH2 trailing code (88)

The address 24 (for channel 1) and the addr ess 88 ( for channel 2) store the trailing codes. The default setting is H0D (CR code). To change the trailing code, write the desired code into this address then write the hot reset command into the Command 1 (12). See section 5.6 for this procedure.

24 or 88

F E D C B A 9 8 7 6 5 4 3 2 1 0

Bit F-0 Received

message length

F E D C B A 9 8 7 6 5 4 3 2 1 0 0 0 0 0 0 0 0 0 Trailing code

Bit 7-0 Trailing code Stores the trailing code.

Received message length

Shows the received message length (bytes). 0 - 896

Initial value at power on is H0D (carriage retur n ) .

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CH1 time-out check (25) and CH2 time-out check (89)

The address 25 (for channel 1) and the addr ess 89 ( for channel 2) store the time-out check times. If the t im e bet ween each receiving charact er exceeds the specified time-out check time, it becomes the receiving t im e- out error. The default set t ing is 1 second. To change the setting, write t he desir ed data into this address then write the hot reset command into the Command 1 (12). See sect ion 5. 7 for this procedure.

25 or 89

F E D C B A 9 8 7 6 5 4 3 2 1 0

Bit F-0 Time-out check

time

4. Register Configuration

Time-out check time

Stores the time-out check tim e ( 0. 1 s units). Valid data range is 1 to 600 (0.1 to 60 s). If 0 or more than 600 is specified, the time-out check will not work. Initial value at power on is 10 (1 s).

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4. Register Configuration

4.2.4 Receiving and transmitting data area

The r eceiving and transmitting data area is provided to exchange the com m unication character s between T3 and AS311. The address ranges in the AS311 buf fer memory are as follows.

Address W ord data

128 Channel 1

reading (receiving)

data area

576 Channel 1

writing (transmitting )

data area

1024 Channel 2

reading (receiving)

data area

1472 Channel 2

writing (transmitting )

data area

When AS311 receives a message (one set of transmission characters), AS311 set s the character s into the receiving data area starting with the address 128 or 1024. Then T3 can read these char acters from the receiving dat a ar ea by using READ inst r uction.

When T3 attempts to send a message via AS311, T3 writes the characters into the transm it t ing data area starting with the address 576 or 1472 by using WRITE instruct ion, and instructs AS311 to start transmit t ing. AS311 recognizes from the character st or ed in the starting address (576 or 1472) to t he t railing code character as the one set of transmitting message.

Ref er t o section 5 for message receiving/t r ansmitting procedure.

448 words

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Section 5

Operation Procedure

5.1 Transmission message format

5.2 Received message read sequence

5.3 Write sequence for message tr ansm it t ing

5.4 Checking the AS311 operation status

5.5 Resetting the AS311 by software

5.6 Setting the trailing code

5.7 Setting the time-out check time

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5. Operation Procedure

5.1 Transmission message format

The t r ansm ission m essage is composed by ASCII characters and a specified t r ailing code. T he default setting of t he trailing code is CR (carriage ret urn code = H0D). Ref er to section 5.6 for setting the trailing code other than CR.

The m aximum length of a message is 896 bytes. An example of t he m essage is shown below.

1 2 3 4 5 6 7 8 9

″0″ ″1″ ″2″ ″A″ ″B″ ″7″ ″8″ ″9″

In the above figure, ″x″ means an ASCII character. For example, ″0″ is H30. When the above message is received or transm it t ed, the data arrangements in the

T3 r egisters are as follows.

Register F 8 7 0 n n+1 n+2 n+3 n+4 CR

″1″ ″0″

″A″ ″2″

″7″ ″B″ ″9″ ″8″

Transmission message

CR

″0″ ″1″ ″2″ ″A″ ″B″ ″7″ ″8″ ″9″

CR

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5. Operation Procedure

5.2 Received message read sequence

5.2.1 Flag control timing

In case of receiving a message, the f ollowing flags are used for handshaking between T3 and AS311. These flags are the bits of the I/O registers assigned to the AS311. Ref er t o section 4.1.

Read ready Receive complete Receive error

Read start The m essage receiving procedure is as follows. It is called “received message read

sequence”.

AS311 receives a message

AS311 sets Receive complete to ON

T3 sets Read st art to ON

Normal receiving Receiving error AS311 sets the message int o buffer AS311 sets the error information into

memory (receiving data area), and buffer memory (parameter area) sets the received message length into buffer memory (parameter area)

AS311 sets Read ready to ON, and AS311 sets Receive error to ON, and resets Receive complete to OFF resets Receive complet e to OFF

T3 reads the message for m buffer T3 r eads t he er r or information from memory (receiving data area) buffer memory (parameter area) by READ instruction by READ instruction

T3 resets Read start to OFF T3 resets Read start to OFF

AS311 resets Read ready to OFF AS311 resets Receive error to OFF

Bit 7 of XW(n) for channel 1 or XW(n+1) for channel 2 Bit 6 of XW(n) for channel 1 or XW(n+1) for channel 2 Bit 5 of XW(n) for channel 1 or XW(n+1) for channel 2

Bit 7 of YW(n+2) for channel 1 or YW(n+3) f or channel 2

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5. Operation Procedure

5.2.2 T3 sample program for message receiving

A sample program for the “received messag e read sequence” is shown below. This sam ple pr ogram is for the channel 1 of the AS311 that is allocated to XW000 YW003.

(Main program)

Operation for normal received message

Operation for receiving error

(Subrout ine No. 0)

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5. Operation Procedure

In this sam ple program, the following devices/registers are used. R0100 AS311 status (ON when ready) - Refer to section 5.4

R0200 Receiving normal complete (comes ON when receiving is complete normally) R0300 Receiving error complete (comes ON when receiving error has occurred)

X0006 Receive complete flag X0007 Read ready flag X0005 Receive error flag Y0027 Read st ar t flag

D0000 - D0063 Received message is stored here D3000 Receiving error information is st or ed here D4000 - D4001 Parameters for READ instruction

This sam ple pr ogram works as follows. Main program

- Rung 1: Calls Subroutine No. 0 when the AS311 is normal and both R0200 and R0300 are OFF.

- Rung 2: When R0200 comes ON (normal receiving), perform s t he necessary operation for the received message, then resets R0200 to OFF.

- Rung 3: When R0300 comes ON (r eceiving er r or has occurred), performs t he error processing , t hen resets R0300 to OFF.

Subroutine No. 0

- Rung 1: Indicates the entry of Subroutine No. 0.

- Rung 2: Reads XW000 and XW001 from the AS311 by direct I/O instruction.

- Rung 3: Sets Y0027 (Read start flag) t o O N if X0006 (Receive complete flag) is O N.

- Rung 4: When X0007 (Read ready flag) comes ON, reads the received message from the AS311’s buffer memory, 64 words starting with address 128, by READ instr uct ion, and stores it into D0000 and after. Then reset s Y0027 (Read start flag) to O FF, and sets R0200 t o O N. When X0005 (Receive error flag) comes ON, reads the error information from t he AS311’s buf fer memory, 1 word of address 16, by READ instr uct ion, and stores it into D3000. T hen r eset s Y0027 ( Read st ar t flag) to OFF, and sets R0300 t o O N.

- Rung 5: Writes YW002 and YW003 into the AS311 by direct I/O instruction.

- Rung 6: Indicates the return of Subr out ine No. 0.

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5. Operation Procedure

Explanation f or this sample program: (1) The “ r eceived message read sequence” is programm ed on Subr out ine No. 0.

(2) The Subr outine No. 0 is called from Main program with reset t ing R0200 and R0300 to OFF. (3) When a message is received norm ally, R0200 will come ON and t he m essage (ASCII characters) will be stored in D0000 to D0063. In t his sample program, the received message length information (buffer memory address 19) is not used. The maximum length of a message is 128 bytes (64 words) because the number of read words of the READ instruction is programm ed as 64 words. (4) When an error has occurr ed in r eceiving t he m e ssage, R0300 will come ON and the error information will be stored in D3000. For details of the error information, refer to section 6.2.3.

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5. Operation Procedure

5.3 Write sequence for message transmitting

5.3.1 Flag control timing

In case of transmitting a message, t he following flags are used for handshaking between T3 and AS311. These flags are the bits of the I/O registers assigned to the AS311. Refer to section 4.1.

Write ready Transmit complete Bit E of XW(n) for channel 1 or XW(n+1) for channel 2 Transmit error

Transmit start The m essage transmitting procedure is as follows. It is called “write sequence for

message transmitting”.

T3 checks Write ready is ON

T3 writes a message into buffer memory (transmitting data ar ea) by WRITE instruction

T3 sets Transmit start to ON

AS311 resets Write ready to OFF

Normal transmitting Transmitting error AS311 sends out the message and AS311 sets the err or information into

sets Transmit complete to ON buffer memory (parameter area) and sets Transmit error to ON

T3 resets Transmit st art to OFF T3 reads the error information from buffer memory (parameter area) AS311 resets Transmit compl ete to by READ instruction, and resets

AS311 resets Transmit error to OFF, and sets Write ready to ON

OFF, and sets Write ready to ON Transmit start to OFF

Bit F of XW(n) for channel 1 or XW(n+1) for channel 2 Bit D of XW(n) for channel 1 or XW(n+1) for channel 2 Bit F of YW(n+2) for channel 1 or YW(n+3) f or channel 2

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5. Operation Procedure

5.3.2 T3 sample program for message transmitting

A sample program for the “write sequence for message transmitt ing” is shown below. This sam ple pr ogram is for the channel 1 of the AS311 that is allocated to XW000 YW003.

(Main program)

Set the transmission message into D0200 - D0263, and set R0110 to ON

Operation for transmitt ing error

(Subrout ine No. 1)

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5. Operation Procedure

In this sam ple program, the following devices/registers are used. R0100 AS311 status (ON when ready) - Refer to section 5.4

R0110 Internal flag to star t transmitting R0201 Transmitting normal complete (comes ON when transmitting is complete normally) R0301 Transmitting error com plet e ( comes ON when transmitting error has occurred)

X000F Write r eady flag X000E Transmit complete f lag X000D Transmit er r or flag Y002F Transmit start flag

D0200 - D0263 Transmitting message is set here D3010 Transmitting error information is stored here D4010 - D4011 Parameters for W RI TE instruction D4000 - D4001 Parameters for READ instruction

This sam ple pr ogram works as follows. Main program

- Rung 1: Pr epares a transmission message and sets it into D0200 and after (maximum 64 words in this sample). Then sets R0110 to ON.

- Rung 2: Calls Subroutine No. 1 when the AS311 is normal and R0110 is ON.

- Rung 3: When R0201 comes ON (normal transmitting), r esets R0110 and R0201 to OFF.

- Rung 4: When R0301 comes ON (t r ansm it t ing error has occurred), performs the error processing , then resets R0110 and R0301 to OFF.

Subroutine No. 1

- Rung 1: Indicates the entry of Subroutine No. 1.

- Rung 2: Reads XW000 and XW001 from the AS311 by direct I/O instruction.

- Rung 3: When X000F (Write ready flag) is ON, writes the message that is st ored in D0200 to D0263 into t he AS311’s buffer memory, 64 words start ing with address 576, by WRITE instruction, and sets Y002F (Transmit start flag) to ON.

- Rung 4: When X000E (Transmit complete flag) com es O N, r eset s Y002F ( Transmit start flag) to OFF, and sets R0201 t o O N. When X000D (Transmit error flag) comes ON, reads the error information from the AS311’s buf fer memory, 1 word of address 17, by READ instr uct ion, and stores it into D3010. T hen r eset s Y002F ( Transmit start flag ) to OFF, and sets R0301 to ON.

- Rung 5: Writes YW002 and YW003 into the AS311 by direct I/O instruction.

- Rung 6: Indicates the return of Subr out ine No. 1.

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5. Operation Procedure

Explanation f or this sample program: (1) The “ write seq uence for message transmitt ing ” is programmed on Subroutine

No. 1. (2) To st ar t transmitting, set the m essage (ASCII characters) into D0200 and after. Then set R0110 to ON. The message length is maximum 128 bytes (64 words) in this sample program. (3) When R0110 is set to ON while the AS311 is ready, the Subroutine No. 1 will be called and the message transmitting will be started. (4) When the message is transmitted normally, R0201 will come ON. Then R0110 will be reset to OFF. (5) When an error has occurr ed in t r ansm it ting the message, R0301 will come ON and the error information will be stored in D3010. For details of the error information, refer to section 6.2.4.

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5. Operation Procedure

5.4 Checking the AS311 operation status

AS311 operation st atus information is stored in the AS311’s buffer memory address 4 (Stat us 1) . T3 can read this informat ion by using READ inst ruction. A sample program is shown below. This sample program is f or the AS311 that is allocated to XW000 - YW003.

The above sample program works as follows.

- Rung 1: Reset s S0051 ( I nstruction error flag) t o O FF, and sets parameters for the READ instruction.

- Rung 2: Reads the operation status information from the AS311’s buffer memory address 4 (Stat us 1) .

- Rung 3: When S0051 (Inst r uction error flag) is OFF and R050F ( Ready) is ON, turns R0100 to ON.

It means that the AS311 is operating norm ally when R0100 is ON. If R050E (Error) is ON, the AS311 is in err or state. In that case, the err or code is stored in t he lower 8 bits of RW 050. For the error code, refer t o section 6.2.1. If S0051 (Instruction error flag) is ON, it means that an er r or has occur r ed dur ing the READ instruction execution.

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5. Operation Procedure

5.5 Resetting the AS311 by software

AS311 can be reset by T3 pr ogram. Two types of resetting are available, cold reset and hot reset . The cold r eset is used t o r eset the AS311 error state. When the cold reset is executed, the AS311 will be initialized. The t railing code and the time-out check t im e ar e also reset t o t he default settings. This function is the same as pressing the hardware reset switch and power on initialization. On the ot her hand, the hot reset is used to change the trailing code and/or the time-out check time.

For executing these functions, write the following data into the AS311’s buffer mem ory address 12 (Comm and 1) . The data writing into this address must be one-shot.

Clod reset: H80FF Hot reset: H80FE

The writt en dat a will be cleared to 0 by AS311 when the operation is com pleted. A sample program for the cold reset is shown below. This sample program is for the

AS311 that is allocated to XW000 - YW003. In this sample program, the cold reset operation will be started by setting R0120 to ON.

(Main program)

(Subrout ine No. 2)

(H80FF)

For the hot r eset, refer to sections 5.6 and 5. 7.

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5. Operation Procedure

5.6 Setting the trailing code

The default setting of the trailing code is CR (carriage return code = H0D). The tr ailing code can be changed by T3 pr ogram. To do t his, write desired trailing code into the AS311’s buffer memory address 24 (CH1 trailing code) and/or address 88 (CH2 trailing code), and execute the hot reset (ref er to section 5.5).

A sample program is shown below. This sample program is f or the AS311 that is allocated to XW000 - YW003. In this sample program, the trailing code changing routine will be executed once when the AS311 stat us is changed to ready (R0100 comes ON - refer to section 5.4), and the channel 1 trailing code will be changed to H03. If the channel 2 trailing code and/or the t im e- out check time are also changed, write these data on the Main program Rung 2 before calling Subr outine No. 3 in the same manner.

(Main program)

(Subrout ine No. 3)

(H0003)

(H80FE)

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5. Operation Procedure

5.7 Setting the time-out check time

The default setting of the time-out check time is 1 second. The t ime- out check time can be changed by T3 pr ogram. The valid setting rang e is 0. 1 to 60.0 seconds in 0.1 second units. Refer to section 4.2.3.

To change the time-out check time, write desired value into the AS311’s buffer mem or y address 25 (CH1 t ime-out check) and/or address 89 (CH2 time-out check), and execute the hot r eset ( r efer to section 5.5).

T3 pr ogram for this purpose is almost sam e as that for setting t he t r ailing code (refer to section 5.6) . Only the difference is writing t he time-out check time instead of the trailing code. See Rung 2 of the following sample. In this sam ple, the channel 1 time-out check time is chang ed t o 5 seconds. If the channel 2 time-out check time and/or the trailing code are also changed, write these data on the Main program Rung 2 before calling Subr outine No. 3 in the same manner.

(Main program)

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Section 6

RAS Information

6.1 LED indication

6.2 Buffer memory information

6.3 Trouble shooting

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6. RAS Information

6.1 LED indication

On the AS311, five status LEDs are provided as follows. These LEDs are useful to check t he AS311 oper ation status and the communication status.

RUN TX1 RX1 TX2 RX2

RUN Indicates the AS311 operation status.

Lit when the AS311 is in ready state. Not lit when the AS311 is in error or under initialization.

TX1 Indicates the channel 1 communication status.

Lit while some data is transmitting f rom the AS311.

RX1 Indicates the channel 1 communication stat us.

Lit while some data is receiving into the AS311.

TX2 Indicates the channel 2 communication status.

Lit while some data is transmitting f rom the AS311.

RX2 Indicates the channel 2 communication stat us.

Lit while some data is receiving into the AS311.

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6. RAS Information

6.2 Buffer memory information

Various RAS information are stored in the AS311’s buffer memory. These information can be read by READ instruct ion. When some abnormality has occurred, check these information.

6.2.1 Module status

Address 4 of the buffer mem or y stores the AS311 module status.

F E D C B A 9 8 7 6 5 4 3 2 1 0

RDY ERR 0 0 0 0 0 0 Error code

4

Bit F RDY (Ready) 1 = operating normally

0 = under initialization or error state

Bit E ERR (Error) 1 = error state

0 = no error (normal)

Bit 7-0 Er r o r code Shows the detected error item if ERR is 1.

See the table below (H00 when normal)

Error code

H01 CPU error CPU err or has been detected H02 ROM error ROM error has been detected H03 RAM error Work RAM error has been H04 Buffer memory H05 Switch setting

H10 Watchdog

H11 Trap interrupt

H12 Buffer memory

Type of error Description Status

Operation is stopped.

during initialization.

Operation is stopped.

during initialization.

Operation is stopped.

detected during initialization. error abnormal

timer error

error

time-out error

Buffer memory error has been

detected during initialization.

Switch setting abnormality has

been detected during

initialization.

Watchdog timer error has

occurred during operation.

Trap interrupt has occurred by

detecting illegal instruction

during operation.

Buffer memory time-out has

occurred during operation.

Operation is stopped. Operation is stopped.

Operation is stopped. Cold reset will be effective. Operation is stopped. Cold reset will be effective. Operation is stopped. Cold reset will be effective.

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6. RAS Information

6.2.2 Switch setting status

Addresses 5, 6 and 7 of the buffer m em or y store the switches setting status. Check that the information agrees with the physical setting status if some abnormality has occurred.

F E D C B A 9 8 7 6 5 4 3 2 1 0 0 0 0 0 0 0 0 0 RSW1 RSW2

5

Bit 7-4 RSW1 Stores the rotary switch 1 (RSW1) setting status.

0 - F

Bit 3-0 RSW2 Stores the rotary switch 2 (RSW2) setting status.

0 - F

F E D C B A 9 8 7 6 5 4 3 2 1 0 0 0 0 0 0 0 0 0 SW1

6

OFF ON

ON: 1 OFF: 0

F E D C B A 9 8 7 6 5 4 3 2 1 0 0 0 0 0 0 0 0 0 SW2

7

OFF ON

ON: 1 OFF: 0

SW1

8 7 6 5 4 3 2 1

SW2

8 7 6 5 4 3 2 1

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6. RAS Information

6.2.3 Error information for data receiving

Address 16 for channel 1 and address 80 for channel 2 store the er r or information for data receiving .

16 or 80

F E D C B A 9 8 7 6 5 4 3 2 1 0 0 0 0 0 BRK PE FE OE Receive error code

Bit B BRK ( Br eak) 1 = break detected

0 = normal When break has been detected, receive buffer is cleared. The next message can be received.

Bit A PE ( Par ity error) 1 = parity error

0 = normal When parity err or has occur r ed, the message is disabled. The next message can be received.

Bit 9 FE

(Framing error)

Bit 8 OE

(Overrun error)

Bit 7-0 Receive err or

code

Error code

H01 Receive time-

H02 Message

H03 Receive buffer

Type of error Description Stat us

out error

length error

overflow

1 = framing error 0 = normal When f r aming error has occurred, the message is disabled. The next message can be received. 1 = overrun error 0 = normal When overrun error has occur red, the message is disabled. The next message can be received. Shows the error code regarding received message. See the table below. (H00 when normal)

Specified time-out check

time has elapsed between

characters.

The message length has

exceeded the limit. (896

bytes)

Receive buffer overflow

has occurred.

The rest of the message will be received as the next.

The message is disabled. The next message can be received. The message is disabled. The next message can be received.

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6. RAS Information

6.2.4 Error i n formation for data transmitting

Address 17 for channel 1 and address 81 for channel 2 store the er r or information for data transmitting.

17 or 81

F E D C B A 9 8 7 6 5 4 3 2 1 0 0 0 0 0 0 0 0 0 Transmit error code

Bit 7-0 Transmit error

code

Error code

H01 Trailing code

Type of error Description Stat us

missing

Shows the error code for transmitting. See the table below. (H00 when normal)

The trailing code has not

been written into the

buffer memory.

The message is disabled. The next message can be transmitted.

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6. RAS Information

6.3 Trouble shooting

When AS311 does not work properly, check the following points.

W hen AS311’s RUN Does t he PO WER LED on If no, check the power LED does not light; the T3 power supply module voltage/connection. light ? If no, check the inter nal 5 Vdc current consumption.

Is the AS311 mounted Remove the AS311, securely on the base ? and mount again securely.

When RX1/RX2 LED Are the transmission Check the cable does not light while signals (RXD, SG, etc.) connection. the connected device is connected properly ? transmitting a message;

When the received data Does the receive error Check t he transmission cannot be read pr oper ly; occur ? parameters (baudrate, parity, etc.).

Check the cable connection.

Confirm the receive error information.

I s t he T3 program working Check the T 3 pr ogram. correctly ?

When a data cannot be Does the t r ansm it er ror Confirm the transmit transmitted from the occur ? error information. AS311 (TX1/TX2 LED does not light); Check the T3 program.

Is the CTS signal Check the cable connected properly ? connection. If CTS signal is OFF, data transmitting is prohibited.

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58

Appendix

A.1 Specification of the READ instruction A.2 Specification of the WRITE inst r uction

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Appendix

A.1 Specification of the READ instruction

FUN 237 Special module data read (READ) Reads designated range of data from the special module. Input Execution output

[ A READ B → C ]

Function

• This instruction reads data f r om the buffer memor y of the special module that is designated by operand A, and stores them in T3’s r egisters starting with operand C.

• The transfer source address (buffer memory address) is designated by operand B.

• The transfer size (number of words) is designated by operand B+1.

Operand

Device

Opr Name

Input Action Output ERF

OFF No execution OFF

ON Normal execution ON

Error (see Note 2) ON ON

X Y S L R Z T. C. I O XW YW SW LW RW W T C D F IW OW I J K

Register

Constant

Index

A Special

module

B Transfer

parameter

C Top register

of destination

√ √ √ √ √ √ √ √ √ √ √ √

√ √ √ √ √ √ √ √ √

Program example

R0000 [ XW000 READ RW010 → D0100 ]

• When R0000 is ON, t he buffer memory data of the size indicated by RW011, starting with the address indicated by RW010 of the special module allocated to XW000, are read and stored in D0100 and after.

• The maximum number of words to be read is 256 words.

X W000 special module T3 RW010 20

Buf fer memory RW011 16 20 1234 READ D0100 1234 35 5678 16 words D0115 5678

√ √

√

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Appendix

Note 1) The special module can be designated not only by the assigned register , but also by the mounting position. The mount ing position is designated by a constant data for the operand A as follows.

(Unit number) × 256 + (Slot number) H Slot number (hexadecimal)

Unit number (hexadecimal)

For example, if a special module is mounted on Slot- 4, Unit-0 (basic unit) and allocated to XW008 - YW 011, the following two READ instructions function the same.

[ XW008 READ RW010 → D0100 ] [ H0004 READ RW010 → D0100 ] Note 2) The READ instruction is not executed as error in the following cases. In

these cases, ERF (instruction error f lag = S0051) is set to ON.

Unit number Hexadecimal

0 H00 1 H01 2 H02 3 H03

• When the operand A is other than a valid constant (see Note 1) or XW/YW register.

• When the designated special module has been disconnected.

• When no answer error occur s with the desig nated special module.

• When the number of words transferred exceeds 256 words.

• When the source table of transfer is out of the valid range.

• When the dest ination table of transfer is out of the valid range.

Slot number Hexadecimal

0 H00 1 H01 2 H02 3 H03 4 H04 5 H05 6 H06 7 H07 8 H08 9 H09

10 H0A

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Appendix

A.2 Specification of the WRITE instruction

FUN 238 Special module data write (WRITE) Writ es designated range of data into t he special m odule. Input Execution output

[ A WRITE B → C ]

Function

• This instruction transfer s dat a st or ed in T3’s registers starting with operand A int o t he buffer memory of the special module that is designated by operand C.

• The destination address (buffer memory address) is designated by operand B.

• The transfer size (number of words) is designated by operand B+1.

Operand

Device

Opr Name

Input Action Output ERF

OFF No execution OFF

ON Normal execution ON

Error (see Note 2) ON ON

X Y S L R Z T. C. I O XW YW SW LW RW W T C D F IW OW I J K

Register

Constant

Index

A Top register

of source

B Transfer

parameter

C Special

module

√ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √

Program example

R0000 [ D0100 WRI TE RW010 → YW002 ]

• When R0000 is ON, t he register data of the size indicated by RW011, starting with D0100, are transferred to the buffer memory start ing with the address indicated by RW010 of the special module allocated to YW002.

• The maximum number of words to be transferred is 256 words.

T3 YW002 special module RW010 320

RW011 150 Buffer mem o r y D0100 1234 WRIT E 320 1234 D0249 5678 150 words 469 5678

√

√ √

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Appendix

Note 1) The special module can be designated not only by the assigned register , but also by the mounting position. The mount ing position is designated by a constant data for the operand C as follows.

(Unit number) × 256 + (Slot number) H Slot number (hexadecimal)

Unit number (hexadecimal)

For example, if a special module is mounted on Slot- 2, Unit-1 (expansion unit #1) and allocated to XW020 - YW023, the following two WRITE instructions function the same.

[ D0100 WRITE RW010 → XW020 ] [ D0100 WRITE RW010 → H0102 ] Note 2) The WRITE instruction is not executed as error in the following cases. In

these cases, ERF (instruction error flag = S0051) is set t o O N.

Unit number Hexadecimal

0 H00 1 H01 2 H02 3 H03

• When the oper and C is ot her than a valid constant (see Note 1) or XW/YW register.

• When the designated special module has been disconnected.

• When no answer error occur s with the desig nated special module.

• When the number of words transferred exceeds 256 words.

• When the source table of transfer is out of the valid range.

• When the dest ination table of transfer is out of the valid range.

Slot number Hexadecimal

0 H00 1 H01 2 H02 3 H03 4 H04 5 H05 6 H06 7 H07 8 H08 9 H09

10 H0A

User’s Manual

63

TOSHIBA CORPORATION

Industrial Equipment Department

1-1, Shibaura 1-chome, Minato-ku Tokyo 105-8001, JAPAN Tel: 03-3457-4900 Fax: 03-5444-9268

Toshiba AS311 User Manual

Specifications and Main Features

Frequently Asked Questions

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

Cable Connections

3.1 RS-232C connection

3.2 RS-422 connection

Register Configuration

4.1 I/O allocation and I/O registers

4.2 AS311 buffer memory

4.2.1 Memory map

4.2.2 Buffer memory access

4.2.3 Parameter area

4.2.4 Receiving and transmitting data area

Operation Procedure

5.1 Transmission message format

5.2 Received message read sequence

5.2.1 Flag control timing

5.2.2 T3 sample program for message receiving

5.3 Write sequence for message transmitting

5.3.1 Flag control timing

5.3.2 T3 sample program for message transmitting

5.4 Checking the AS311 operation status

5.5 Resetting the AS311 by software

5.6 Setting the trailing code

5.7 Setting the time-out check time

RAS Information

6.1 LED indication

6.2 Buffer memory information

6.2.1 Module status

6.2.2 Switch setting status

6.2.3 Error information for data receiving

6.2.4 Error i n formation for data transmitting

6.3 Trouble shooting

Appendix

A.1 Specification of the READ instruction

A.2 Specification of the WRITE instruction