Yaskawa RS-485 User Manual

YASKAWA AC Drive-J1000 Option

RS-485
MEMOBUS/Modbus
Interface

Technical Manual

Type SI-485/J

To properly use the product, read this manual thoroughly and retain
for easy reference, inspection, and maintenance. Ensure the end user
receives this manual.

J1000オプションユニット

MEMOBUS

オプションユニット

取扱説明書

形式 SI-485/J

製品を安全にお使い頂くために，本書を必ずお読みください。
また，本書をお手元に保管していただくとともに，最終的に本製品をご使用になる
ユーザー様のお手元に確実に届けられるよう，お取り計らい願います。

J1000

MANUAL NO. TOBP C730600 33A

通信

This Page Intentionally Blank

Contents

1 PREFACE AND SAFETY . . . . . . .5

2 RECEIVING . . . . . . . . . . . . . . . . . . 9

3 PRODUCT OVERVIEW . . . . . . . .10

4 OPTION COMPONENTS. . . . . . .11

5 INSTALLATION PROCEDURE . .14
6 RELATED DRIVE PARAMETERS . . .21

7 TROUBLESHOOTING. . . . . . . . .24

8 SPECIFICATIONS . . . . . . . . . . . .26

9 YASKAWA LOCATIONS. . . . . . . 28

10 REVISION HISTORY . . . . . . . . .29

TOBPC73060033A RS-485 Interface Technical Manual 3

Copyright © 2008 YASKAWA ELECTRIC CORPORATION

All rights reserved. No part of this publication may be reproduced,
stored in a retrieval system, or transmitted, in any form or by any
means, mechanical, electronic, photocopying, recording, or
otherwise, without the prior written permission of Yaskawa. No
patent liability is assumed with respect to the use of the
information contained herein. Moreover, because Yaskawa is
constantly striving to improve its high-quality products, the
information contained in this manual is subject to change without
notice. Every precaution has been taken in the preparation of this
manual. Yaskawa assumes no responsibility for errors or
omissions. Neither is any liability assumed for damages resulting
from the use of the information contained in this publication.

4 YASKAWA ELECTRIC TOBPC73060033A RS-485 Interface Technical Manual

1 Preface and Safety

J1000

1 Preface and Safety

◆ Applicable Documentation

The following manuals are available for the RS-485 Interface
Option:

Option Unit

Yaskawa AC Drive - RS-485
MEMOBUS/Modbus Interface Option
Technical Manual

Read this manual first.
The Technical Manual is packaged with the
RS-485 Interface Option and contains a basic
overview of wiring, settings, functions, and
fault diagnoses.

YASKAWA ELECTRIC TOBPC73060033A RS-485 Interface Technical Ma nual 5

1 Preface and Safety

Yaskawa Drive

U.S. and Europe:
Yaskawa AC Drive
J1000 Quick Start
Guide
Other Areas:
Yaskawa AC Drive
J1000 Installation &
Start-Up Manual

Yaskawa AC Drive­J1000
Technical Manual

To obtain instruction
manuals for Yaskawa
products access these
sites:
U.S.: http://
www.yaskawa.com
Europe: http://
www.yaskawa.eu.com
Japan: http://www.e­mechatronics.com
Other areas: contact a
Yaskawa representative.
For questions, contact the
local Yaskawa sales
office or the nearest
Yaskawa representative.

◆ Terms

Note: Indicates a supplement or precaution that

does not cause drive damage.

Drive: Yaskawa AC Drive - J1000 Series

Option:

6 YASKAWA ELECTRIC TOBPC73060033A RS-485 Interface Technical Manual

Yaskawa AC Drive - J1000 RS-485 MEMOBUS/
Modbus Interface

1 Preface and Safety

DANGER

W ARNING

◆ Registered Trademarks

• Company names and product names listed in this manual are
registered trademarks of those companies.

◆ Supplemental Safety Information

Read and understand this manual before installing, operating, or
servicing this option unit. The option unit must be installed
according to this manual and local codes.

The following conventions are used to indicate safety messages in
this manual. Failure to heed these messages could result in serious
or possibly even fatal injury or damage to the products or to related
equipment and systems.

Indicates a hazardous situation, which, if not avoided, will
result in death or serious injury.

Indicates a hazardous situation, which, if not avoided, could
result in death or serious injury.

YASKAWA ELECTRIC TOBPC73060033A RS-485 Interface Technical Ma nual 7

1 Preface and Safety

CAUTION

NOTICE

Indicates a hazardous situation, which, if not avoided, could
result in minor or moderate injury.

Indicates an equipment damage message.

8 YASKAWA ELECTRIC TOBPC73060033A RS-485 Interface Technical Manual

2 Receiving

Blade width

3.0 mm max.

0.6 mm max.

Blade thickness

2 Receiving

◆ Receiving

Confirm the packaging after receiving the RS-485 Interface
Option. If the wrong model is received or the RS-485 Interface
Option does not function properly, contact your supplier.

Components packaged with the option:

• The RS-485 MEMOBUS/Modbus Interface (SI-485/J)

• Technical manual

◆ Tool Requirements

Use a flat-blade screwdriver with the dimensions below for
installation (See page 12) or removal (See page 13) of the option
cover and RS-485 Interface Option.

YASKAWA ELECTRIC TOBPC73060033A RS-485 Interface Technical Ma nual 9

3 Product Overview

3 Product Overview

◆ About this product

The RS-485 MEMOBUS/Modbus Interface is used to connect the
drive to a network using the MEMOBUS protocol.

By installing this option unit, the user can operate the drive with a
PLC or some other type of control device.

• Drive operation

• Monitor drive operational status

• Change drive parameter settings

◆ Applicable Models

The RS-485 Interface Option is used with these Yaskawa drive
models.

Drive Drive Software Version <1>

CIMR-JABA ≥1010

<1> See “PRG” on the drive nameplate for software version

number.

10 YASKAWA ELECTRIC TOBPC73060033A RS-485 Interface Technical Manual

4 Option Components

4 Option Components

A

BC

A – DIP Switch

S2

B–Terminal

Block

C–Option

Model
Number

YASKAWA ELECTRIC TOBPC73060033A RS-485 Interface Technical Ma nual 11

DE

D – Drive

Connector

E – Connection

Tab s

4 Option Components

◆ Dimensions

The installed Option Interface adds 23.8 mm (0.94 in) to the total
depth of the drive.

8.8(0.35)

12 YASKAWA ELECTRIC TOBPC73060033A RS-485 Interface Technical Manual

15(0.59)

mm(in)

4 Option Components

S– S+ IG R– R+

Top View

Bottom View

◆ Terminal Block

Ter min al Name Description

1 R+ Receive (+)

2 R- Receive (-)

3 IG Shield Ground

4 S+ Send (+)

5S-Send (-)

YASKAWA ELECTRIC TOBPC73060033A RS-485 Interface Technical Ma nual 13

5 Installation Procedure

DANGER

NOTICE

5 Installation Procedure

◆ Section Safety

Electrical Shock Hazard

Disconnect all power to the drive, before servicing.

Failure to comply will result in death or serious injury.
Wait at least one minute after all indicators are off. The drive

has internal capacitors that remain charged even after main
power supply is disconnected. The drive charge LED will
extinguish when the DC bus voltage is below 50 Vdc. Measure
drive DC bus voltage to confirm safe level.

Damage to Equipment

Properly connect the connectors.

Failure to comply may prevent proper operation and possibly
damage equipment.

14 YASKAWA ELECTRIC TOBPC73060033A RS-485 Interface Technical Manual

5 Installation Procedure

◆ Attaching the Interface Option

1. Insert a flat-blade screwdriver into the

opening as shown in the diagram below to
remove the option cover from the drive.

2. Insert the connector on the back of the

interface into the CN5 port and click into
place.

Note: The RS-485 Interface Option has three additional

connection tabs that must also click into place to
properly mount the option.

Flat-blade
screwdriver

CN5 port

Connection
tabs

YASKAWA ELECTRIC TOBPC73060033A RS-485 Interface Technical Ma nual 15

5 Installation Procedure

Underside of
Interface Option

Flat-blade
screwdriver

◆ Removing the Interface Option

1. Insert a flat-blade screwdriver into the

small opening between the drive and the
Interface Option, and gently apply
pressure to the connection tabs as shown.

16 YASKAWA ELECTRIC TOBPC73060033A RS-485 Interface Technical Manual

5 Installation Procedure

Drive

SI-485/J

S2

DIP Switch

ON

R+
R–
IG
S+
S–

R+
R–
IG
S+
S–

PLC

◆ Connecting Peripheral Devices to the

RS-485 Interface Option

PLC (Master)

Drive Drive Drive

◆ Wiring Diagram

■ RS-485 Communications (2-wire)

Single Drive Wiring

YASKAWA ELECTRIC TOBPC73060033A RS-485 Interface Technical Ma nual 17

5 Installation Procedure

Drive

SI-485/J

S2

DIP Switch

ON

R+
R–
IG
S+
S–

Drive

SI-485/J

S2

R+
R–
IG
S+
S–

Drive

SI-485/J

S2

R+
R–
IG
S+
S–

R+
R–
IG
S+
S–

PLC

DIP Switch

OFF

DIP Switch

OFF

Multiple Drive Wiring

Note: • Set termination resistor switch S2, located

18 YASKAWA ELECTRIC TOBPC73060033A RS-485 Interface Technical Manual

on the SI-485/J Option Interface to the ON
position for the end drive on the network.

• Set parameter H5-07 = 1 for each drive on
the network that is using RS-485
communications.

5 Installation Procedure

Drive

SI-485/J

S2

DIP Switch

ON

PLC

R+
R–
IG
S+
S–

R+
R–

IG

S+
S–

■ RS-422 Communications (4-wire)

Single Drive Wiring

YASKAWA ELECTRIC TOBPC73060033A RS-485 Interface Technical Ma nual 19

5 Installation Procedure

R+
R–

IG

S+
S–

PLC

Drive

SI-485/J

DIP Switch

OFF

S2

R+
R–
IG
S+
S–

Drive

SI-485/J

S2

R+
R–
IG
S+
S–

Drive

SI-485/J

S2

R+
R–
IG
S+
S–

DIP Switch

OFF

DIP Switch

ON

Multiple Drive Wiring

Note: • Set termination resistor switch S2, located

20 YASKAWA ELECTRIC TOBPC73060033A RS-485 Interface Technical Manual

on the SI-485/J Option Interface to the ON
position for the end drive on the network.

• Set parameter H5-07 = 0 for each drive on
the network that is using RS-422
communications.

6 Related Drive Parameters

6 Related Drive Parameters

No. Name Description Default

Selects the frequency
reference input source.

Frequency

b1-01

Reference
Selection 1

Run Command

b1-02

Selection 1

Drive Slave

H5-01

Address

YASKAWA ELECTRIC TOBPC73060033A RS-485 Interface Technical Ma nual 21

0: Operator - Digital preset

speed d1-01 to d1-17.

1 : Terminals - Analog input

terminal A1 or A2.

2: MEMOBUS/Modbus

communications

3: Option PCB

Selects the run command
input source.
0: Operator - RUN and

STOP keys on the digital

operator.
1 : Digital input terminals
2: MEMOBUS

communications

Selects drive slave number
(address) for MEMOBUS/
Modbus terminals R+, R-,
S+, S-. Cycle power for the
setting to take effect.

1

1

1F

6 Related Drive Parameters

No. Name Description Default

Selects the baud rate for
MEMOBUS/Modbus
terminals R+, R-, S+ and S-.
Cycle power for the setting

Communication

H5-02

Speed Selection

Communication

H5-03

Parity Selection

Stopping
Method After

H5-04

Communication
Error

22 YASKAWA ELECTRIC TOBPC73060033A RS-485 Interface Technical Manual

to take effect.
0: 1200 bps
1: 2400 bps
2: 4800 bps
3: 9600 bps
4: 19200 bps
5: 38400 bps

Selects the communication
parity for MEMOBUS/
Modbus terminals R+, R-,
S+ and S-. Cycle power for
the setting to take effect.
0: No parity
1: Even parity
2: Odd parity

Selects the stopping method
when a communication
time-out fault (CE) is
detected.
0: Ramp to stop
1: Coast to stop
2: Fast-stop
3: Alarm only

3

0

3

6 Related Drive Parameters

No. Name Description Default

Drive Transmit

H5-06

Wait Time

RTS Control

H5-07

Selection

Run Command

H5-12

Method
Selection

MEMOBUS/
Modbus
frequency

H5-13

reference and
frequency
monitor unit

YASKAWA ELECTRIC TOBPC73060033A RS-485 Interface Technical Ma nual 23

Set the wait time between
receiving and sending data.

Selects “request to send”
(RTS) control:
0: Disabled - RTS is always

on.
1: Enabled - RTS turns on

only when sending.

0 : FWD/STOP, REV/STOP

Method
1: RUN/STOP, FWD/REV

Method

0: 0.1 Hz / 1
1: o1-03 based
2: 100% / 30000
3: 0.1% / 1

10 ms

1

0

0

7 Troubleshooting

7 Troubleshooting

Problems with the option interface may trigger an operator error.
Refer to the J1000 Technical Manual for all other errors.

◆ Fault

LED Operator

Display

MEMOBUS/Modbus Communication

CE

Error

Cause Possible solutions

Data not received
within the CE
detection time
limit set in
parameter H5-09.
This is possibly
due to noise or a
improperly
connected
communication
cable.

24 YASKAWA ELECTRIC TOBPC73060033A RS-485 Interface Technical Manual

⇒Check for improper wiring or loose
cables.

⇒Make sure the unit is properly grounded.
⇒Reconnect leads running to the main

circuit in the drive.
⇒Make sure the DIP switch for terminal
resistance is set appropriately.

Minor Fault Name

7 Troubleshooting

LED Operator

Display

Run Command Selection Error

oPE05

The Run command selection parameter b1­02 is set to 3 but no option unit is installed.

Cause Possible solutions

Frequency
reference is
assigned to an
option (b1-01 = 2)
that is not
connected to the
drive.

The Run command
is assigned to an
option (b1-02 = 2)
that is not
connected to the
drive.

YASKAWA ELECTRIC TOBPC73060033A RS-485 Interface Technical Ma nual 25

⇒Make sure that parameters b1-01 and b1­02 are set properly.
⇒Reconnect the option unit to the drive.

Minor Fault Name

8 Specifications

8 Specifications

◆ Option Specifications

Item Specification

Model
Number

Storage/
Installation
Area

Ambient
Temperature

Humidity 95% RH or less with no condensation

Storage
Temperature

Altitude 1000 m or less

26 YASKAWA ELECTRIC TOBPC73060033A RS-485 Interface Technical Manual

SI-485/J

Indoors (an area free from oil mist and dust)

-10 to +50°C

-20 to +60°C allowed for short-term transport of
the product

8 Specifications

◆ Network Specifications

Item Specification

Interface RS-422, RS-485

Communication
Speeds Available

Communication
Parameters

Protocol MEMOBUS/Modbus (using RTU mode only)

Maximum
Number of
Slaves

YASKAWA ELECTRIC TOBPC73060033A RS-485 Interface Technical Ma nual 27

Data length 8 bit (fixed)

Parity

Stop bit 1 bit (fixed)

31 drives (using RS-485)

1.2; 2.4; 4.8; 9.6;

19.2; 38.4 kbps

Select even, odd, or
none

9 Yaskawa Locations

(Address revision No.: 10-10-6)

DRIVE CENTER (INVERTER PLANT)

2-13-1, Nishimiyaichi, Yukuhashi, Fukuoka, 824-8511, Japan
Phone: [phone] Fax: [phone]
http://www.yaskawa.co.jp

YASKAWA ELECTRIC CORPORATION

New Pier Takeshiba South Tower, 1-16-1, Kaigan, Minatoku, Tokyo, 105-6891, Japan
Phone: [phone] Fax: [phone]
http://www.yaskawa.co.jp

YASKAWA AMERICA, INC.

2121 Norman Drive South, Waukegan, IL 60085, U.S.A.
Phone: (800) YASKAWA (927-5292) or 1-847-887-7000 Fax: [phone]
http://www.yaskawa.com

YASKAWA ELÉTRICO DO BRASIL LTDA.

Avenda Fagundes Filho, 620 Bairro Saude, São Paulo, SP04304-000, Brasil
Phone: [phone]

Fax: [phone]

http://www.yaskawa.com.br

YASKAWA EUROPE GmbH

Hauptstrasse 185, 65760 Eschborn, Germany

Phone: [phone] Fax: [phone]
http://www.yaskawa.eu.com

YASKAWA ELECTRIC UK LTD.

1 Hunt Hill Orchardton Woods, Cumbernauld, G68 9LF, United Kingdom
Phone: [phone]

Fax: [phone]

http://www.yaskawa.co.uk

YASKAWA ELECTRIC KOREA CORPORATION

7F, Doore Bldg. 24, Yeoido-dong, Yeoungdungpo-gu, Seoul, 150-877, Korea
Phone: [phone]

Fax: [phone]

http://www.yaskawa.co.kr

YASKAWA ELECTRIC (SINGAPORE) PTE. LTD.

151 Lorong Chuan, #04-01, New Tech Park, 556741, Singapore
Phone: [phone]

Fax: [phone]

http://www.yaskawa.com.sg

YASKAWA ELECTRIC (SHANGHAI) CO., LTD.

No. 18 Xizang Zhong Road, 17F, Harbour Ring Plaza, Shanghai, 200001, China
Phone: [phone]

Fax: [phone]

http://www.yaskawa.com.cn

YASKAWA ELECTRIC (SHANGHAI) CO., LTD. BEIJING OFFICE

Room 1011, Tower W3 Oriental Plaza, No. 1 East Chang An Ave.,
Dong Cheng District, Beijing, 100738, China
Phone: [phone]

Fax: [phone]

YASKAWA ELECTRIC TAIWAN CORPORATION

9F, 16, Nanking E. Rd., Sec. 3, Taipei, 104, Taiwan
Phone: [phone]

Fax: [phone]

9 Yaskawa Locations

28 YASKAWA ELECTRIC TOBPC73060033A RS-485 Interface Technical Manual

10 Revision History

MANUAL NO. TOBP C730600 33A

Published in Japan December 2008 08-1

Date of
publication

Date of original
publication

Revision
number

1

123

4

10 Revision History

The revision dates and numbers of the revised manuals are given
on the bottom of the back cover.

Date of

Publication

January 2008 – – First edition

December 2008 Chapter 5

April 2010 Chapter 9 Revision: Address

September 2010 Chapter 9 Revision: Address

July 2011

YASKAWA ELECTRIC TOBPC73060033A RS-485 Interface Technical Ma nual 29

Rev.

Section Revised Content

No.

Correction:
Wiring diagram of RS-422
communications (4-wire)

Front cover,

back cover

Revision: Format

YASKAWA AC Drive-J1000 Option

RS-485
MEMOBUS/Modbus
Interface

Technical Manual

J1000オプションユニット

MEMOBUS

オプションユニット

取扱説明書

Any inquiries related to the product can be directed to the address listed at chapter 9.

この製品に関するお問い合わせ先については，9章お問い合わせ先をご覧ください。

In the event that the end user of this product is to be the military and said product is to be employed in any weapons systems or the manufacture
thereof, the export will fall under the relevant regulations as stipulated in the Foreign Exchange and Foreign Trade Regulations. Therefore, be sure to
follow all procedures and submit all relevant documentation according to any and all rules, regulations and laws that may apply.

Specifications are subject to change without notice for ongoing product modifications and improvements.

© 2008-2011 YASKAWA ELECTRIC CORPORATION. All rights reserved.

本製品の最終使用者が軍事関係であったり,用途が兵器などの製造用である場合には，｢外国為替及び外国貿易法｣の定める輸出規制の対象となることがあります
ので，輸出される際には十分な審査及び必要な輸出手続きをお取りください｡

製品改良のため，定格，仕様，寸法などの一部を予告なしに変更することがあります。

通信

YASKAWA ELECTRIC CORPORATION

MANUAL NO. TOBP C730600 33A

Published in Japan July 2011 08-1

4 -0