Omron SYSDRIVE 3G3JV Use and care manual

Cat. No. I548-E1-01
COMMUNICATIONS MANUAL
3G3JE
Compact Simplified Inverters

Preface
Thank you for choosing this 3G3JE-series Compact Simplified Inverter.
This Communications Manual describes Inverter communications specifica-
tions and communications setting methods.
Serial communications using the CompoWay/F communications format are supported by
3G3JE Inverters with Communications. This Communications Manual describes Inverter
communications. For information on 3G3JE installation, wiring, and operating methods,
refer to the 3G3JE User's Manual.
• This manual is to be delivered to the final end user of the product.
• After reading the manual, always keep it close at hand for reference when operating the
Inverter.
• Every effort has been made to provide detailed specifications, information on functions,
and interrelationships between them. Assume that anything not described in this manual
cannot be performed.
• This manual is intended for the following personnel, who are assumed to have sufficient
knowledge of electrical systems (i.e., an electrical engineer or the equivalent).
• Personnel in charge of introducing control devices
• Personnel designing the control system
• Personnel installing and connecting control devices
• Personnel managing the site where the Inverter is used

II
OMRON, 2006
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form, o
r
by any means, mechanical, electronic, photocopying, recording, or otherwise, without the prior written permission o
f
OMRON.
No patent liability is assumed with respect to the use of the information contained herein. Moreover, because OMRON is con-
stantly 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. Nevertheless, OMRON 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.

III
Read and Understand this Manual
Please read and understand this manual before using the products. Please consult your OMRON
representative if you have any questions or comments.
Warranty and Limitations of Liability
WARRANTY
OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a
period of one year (or other period if specified) from date of sale by OMRON.
OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NON-
INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR PARTICULAR PURPOSE OF THE
PRODUCTS. ANY BUYER OR USER ACKNOWLEDGES THAT THE BUYER OR USER ALONE HAS
DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR
INTENDED USE. OMRON DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED.
LIMITATIONS OF LIABILITY
OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES,
LOSS OF PROFITS OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS,
WHETHER SUCH CLAIM IS BASED ON CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT
LIABILITY.
In no event shall the responsibility of OMRON for any act exceed the individual price of the product on which
liability is asserted.
IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS
REGARDING THE PRODUCTS UNLESS OMRON'S ANALYSIS CONFIRMS THAT THE PRODUCTS
WERE PROPERLY HANDLED, STORED, INSTALLED, AND MAINTAINED AND NOT SUBJECT TO
CONTAMINATION, ABUSE, MISUSE, OR INAPPROPRIATE MODIFICATION OR REPAIR.

IV
Application Considerations
SUITABILITY FOR USE
OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the
combination of products in the customer's application or use of the products.
At the customer's request, OMRON will provide applicable third party certification documents identifying
ratings and limitations of use that apply to the products. This information by itself is not sufficient for a
complete determination of the suitability of the products in combination with the end product, machine,
system, or other application or use.
The following are some examples of applications for which particular attention must be given. This is not
intended to be an exhaustive list of all possible uses of the products, nor is it intended to imply that the uses
listed may be suitable for the products:
• Outdoor use, uses involving potential chemical contamination or electrical interference, or conditions or
uses not described in this manual.
• Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical
equipment, amusement machines, vehicles, safety equipment, and installations subject to separate
industry or government regulations.
• Systems, machines, and equipment that could present a risk to life or property.
Please know and observe all prohibitions of use applicable to the products.
NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR
PROPERTY WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO
ADDRESS THE RISKS, AND THAT THE OMRON PRODUCTS ARE PROPERLY RATED AND INSTALLED
FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM.
PROGRAMMABLE PRODUCTS
OMRON shall not be responsible for the user's programming of a programmable product, or any
consequence thereof.

V
Disclaimers
CHANGE IN SPECIFICATIONS
Product specifications and accessories may be changed at any time based on improvements and other
reasons.
It is our practice to change model numbers when published ratings or features are changed, or when
significant construction changes are made. However, some specifications of the products may be changed
without any notice. When in doubt, special model numbers may be assigned to fix or establish key
specifications for your application on your request. Please consult with your OMRON representative at any
time to confirm actual specifications of purchased products.
DIMENSIONS AND WEIGHTS
Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when
tolerances are shown.
PERFORMANCE DATA
Performance data given in this manual is provided as a guide for the user in determining suitability and does
not constitute a warranty. It may represent the result of OMRON's test conditions, and the users must
correlate it to actual application requirements. Actual performance is subject to the OMRON Warranty and
Limitations of Liability.
ERRORS AND OMISSIONS
The information in this manual has been carefully checked and is believed to be accurate; however, no
responsibility is assumed for clerical, typographical, or proofreading errors, or omissions.
COPYRIGHT AND COPY PERMISSION
This document shall not be copied for sales or promotions without permission.
This document is protected by copyright and is intended solely for use in conjunction with the product.
Please notify us before copying or reproducing this document in any manner, for any other purpose. If
copying or transmitting this document to another, please copy or transmit it in its entirely.

VI
●Indications and Meanings of Safety Information
The following precautions and signal words are used to provide information to ensure the safe use of
the 3G3JE Inverter. The information provided here is vital to safety. Always observe the precautions
provided.
The following signal words are used in this manual.
(There are no alert statements with “DANGER” contained in this manual.)
(There are no alert statements with “WARNING” contained in this manual.)
Safety Precautions
Meanings of Signal Words
DANGER Indicates an imminently hazardous situation which, if
not avoided, is likely to result in serious injury or may
result in death. Additionally there may be severe prop-
erty damage.
WARNING Indicates a potentially hazardous situation which, if not
avoided, will result in minor or moderate injury, or may
result in serious injury or death. Additionally there may
be significant property damage.
CAUTION Indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury or in
property damage.

VII
The following alert symbols are used in this manual.
Meanings of Alert Symbols
Symbol Meaning
Caution
General Caution
Indicates non-specific general cautions, warnings, and
dangers.
Electrical Shock Caution
Indicates possibility of electric shock under specific
conditions.
High Temperature Caution
Indicates possibility of burns due to high temperatures
under specific conditions.
Prohibition
Disassembly Prohibition
Indicates prohibitions when there is a possibility of
injury, such as from electric shock, as the result of
disassembly.
Mandatory
Caution
General Caution
Indicates non-specific general cautions, warnings, and
dangers.

VIII
The following alert statements apply to the products in this manual. Each alert statement also
appears at the locations needed in this manual to attract your attention.
Alert Statements in this Manual
Caution
Be sure to use the specified Braking Resistor or Braking Resistor Unit.
Not doing so may occasionally result in moderate burns due to heating of the
Braking Resistor or Braking Resistor Unit.
When using a Braking Resistor or Braking Resistor Unit, be sure to install a
thermal relay to monitor the resistor temperature.
Include a sequence to turn OFF the power supply to the Inverter if the Braking
Resistor or Braking Resistor Unit overheats.
Terminals B1 and B2 are forconnecting an optional Braking Resistor orBraking
Resistor Unit. Do not connect any device other than a Braking Resistor or Brak-
ing Resistor Unit to these terminals.
Doing so may occasionally result in moderate fire, heating, or equipment dam-
age.
Do not open terminal covers while the power is being supplied or for at least
one minute after the power has been turned OFF.
Doing so may occasionally result in minor injury from electrical shock.
Do not remove the fan cover except when replacing the fan. Before replacing
the fan, first turn OFF the power and disconnect the wiring.
Doing so may occasionally result in minor injury from electrical shock.
Install external breakers (MCCB) suitable for the Inverter capacity on the power
supply side of the Inverter and take other safety measures against short-circuit-
ing in load wiring.
Not doing so may occasionally result in property damage from short-circuiting
in load wiring.
Cover the Inverter or take other measures to prevent filings or lead clippings
from entering the Inverter during installation and wiring.
The Inverter contains high-voltage components and Inverter damage or prop-
erty damage may occasionally occur if the high-voltage components are short-
circuited.

IX
■Installation and Storage Environment
• Do not store, install, or operate the product in any of the following locations.
• Locations subject to direct sunlight.
• Locations subject to temperatures outside the range specified in the specifications.
• Locations subject to humidity outside the range specified in the specifications.
• Locations subject to condensation resulting from severe changes in temperature.
• Locations subject to corrosive or flammable gases.
• Locations subject to exposure to combustibles.
• Locations subject to dust (especially iron dust) or salts.
• Locations subject to exposure to water, oil, or chemicals.
• Locations subject to shock or vibration.
■Transporting, Installation, and Wiring
• Always use the original shipping box when transporting the Inverter.
• Do not apply excessive shock to the Inverter or drop the Inverter. The Inverter may malfunction
or may be damaged.
• Do not connect an AC power supply voltage to the U, V, and W output terminals. Doing so will
damage the Inverter.
• Do not connect any load other than a three-phase inductive motor to the U, V, and W output
terminals.
• Do not connect an AC power supply voltage to the control I/O terminals. Doing so will damage
the Inverter.
• Use 600-V polyvinyl chloride (PVC) cable with a wire size of 0.75 to 2 mm2to wire the main
circuit terminals. Also, tighten the terminal screws on the terminal block to a torque of 0.8 to
1.0 N·m.
• Take appropriate and sufficient shielding countermeasures when installing systems in the fol-
lowing locations. Not doing so may result in malfunction or equipment damage.
• Locations subject to static electricity or other forms of noise.
• Locations subject to strong electromagnetic fields and magnetic fields.
• Locations close to power lines.
■Operation and Maintenance
• This Inverter can be set to operate from low speed to high speed. Operate the Inverter only
after sufficiently confirming the allowable range for the motor installation being used.
• Take measures to assure safety before performing maintenance or inspection, or replacing
components.
Precautions for Safe Use

X
■Installation
• Mount the product vertically on a wall or on a DIN Track. Leave the prescribed space between
this product and the control panel surface and other devices.
■Main Circuit Power Supply
• Use a three-phase, 200 to 230 V, 50/60 Hz power supply.
■Operation after Power Interruptions
• If continuing operation is selected for the momentary power interruption restart selection pa-
rameter (P09), the system may unexpectedly start operation after a momentary power inter-
ruption is reset. Exercise suitable caution.
■Operation Command Selection
• If the operation command selection parameter (P10) is setto “PLC” toenable using the control
circuit terminal inputs (STF and STR), the motor may start operation when the power supply
is turned ON or an alarm is reset if the control circuit terminals are left ON. Exercise suitable
caution. Also, if signals are checked during operation and a voltage isincorrectly applied to the
control circuit terminals, the motor may start moving unexpectedly. Always check safety before
performing signal checks.
■Motor Overheating Protection (Electronic Thermal)
• The Inverter uses an electronic thermal to protect the motor from overheating. Set the rated
current of the motor in the rated motor current parameter (P01). If more than one motor is op-
erated with one Inverter, set the rated motor current parameter (P01) to 0.0 to disable motor
overload detection, and install a thermal relay between the Inverter and each motor. Set the
thermal relay to the nameplate current at 50 Hz and to 1.1 times the nameplate current at 60
Hz.
■EEPROM Life
• The EEPROM has a limited life. Use RAM mode when using communications or other meth-
ods to frequently write data.
■Disposing of the Inverter
• Observe all applicable legal requirements when disposing of the Inverter.
Precautions for Correct Use

XI
About this Manual
This manual is divided into the chapters described in the following table. Understanding how informa-
tion is organized will enable you to use the manual more efficiently.
Chapter Contents
Chapter 1
Communications Methods Provides an overview of the communications methods used for the 3G3JE.
Chapter 2
CompoWay/F Communica-
tions Procedures
Describes the procedures required to use the CompoWay/F commu-
nications protocol.
Chapter 3
Communications Data Provides tables of data used in CompoWay/F communications.
Chapter 4
Appendix Provides a table of ASCII characters.

Table of Contents
XIII
Chapter 1. Communications Methods . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1-1 Overview of Communications Methods. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
■Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
■Communications Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
■Transmission Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
■Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
■Connections and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
■Communications Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Chapter 2. CompoWay/F Communications Procedures . . . . . . . . . 2-1
2-1 Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
■Command Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
■BCC Calculation Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
■Communications Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
■Response Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
■End Code Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2-2 Structure of Command Text . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
■PDU Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
■Area Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
■Type Code (Variable Type) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
■Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
■Number of Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
■List of Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
2-3 Detailed Description of Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
■Read Variable Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
■Write Variable Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
■Read Controller Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
■Read Controller Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
■Echoback Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
■Operation Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
2-4 Response Code List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16
Chapter 3. Communications Data . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3-1 Variable Area Setting Range List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3-2 Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Chapter 4. Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4-1 ASCII List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-1
Revision History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . R-1

Chapter 1
Communications
Methods
1-1 Overview of Communications Methods

Chapter 1
1-2
Communications Methods
1-1 Overview of Communications Methods
■Introduction
3G3JE Inverters with Communications (referred to as “Communications Models”) use communica-
tions to monitor set values and make settings. In addition, programs for communications are created
at the Inverter's host computer (e.g., a personal computer), and the host computer is used to read
and write data, send operation commands, and change the setup area. Therefore the description
provided here is from the viewpoint of the host computer.
CompoWay/F is OMRON's standard communications protocol for general serial communications.
This protocol uses a standard frame format, as well as commands conforming to the well-established
FINS* commands used for OMRON PLCs. This simplifies communications between the host com-
puter and components.
*FINS (Factory Interface Network Service)
The FINS protocol provides message communications between controllers in OMRON FA networks.
●The 3G3JE supports the following communications functions.
• Reading/writing parameters
• Operation commands
• Changing the setup area
■Communications Specifications
Item Specifications Default
Transmission line connection Multidrop ---
Communications method RS-485 (2-wire, half-duplex) ---
Synchronization method Start-stop synchronization ---
Communications baud rate 2.4, 4.8, 9.6, or 19.2 kbps 9.6 kbps
Communications code ASCII ---
Communications data bits 7 or 8 bits 7 bits
Communications stop bits 1 or 2 bits 2 bits
Error detection Vertical parity (none, even, or odd)
and BCC (Block Check Character) Even
Flow control --- ---
Interface RS-485 ---
Retry function --- ---
Communications buffer 40 bytes ---

Chapter 1
1-3
Communications Methods
■Transmission Procedure
When the host computer transmits a command frame, the 3G3JE transmits a response frame that
corresponds to the command frame. A single response frame is returned for each command frame.
The following diagram shows the operation of the command and response frames.
Note Allow a wait time of at least 2 ms before the next command is sent after the host computer
receives a response from the 3G3JE.
■Interface
A K3SC Interface Converter is recommended for RS-485/RS-232C (or USB) interface conversion.
■Connections and Wiring
●Connections
• Make the connections according to the host computer and 3G3JE communications specifications.
• The connection format can be either 1:1 or 1:N.
• Up to 32 nodes including the host computer can be connected in a 1:N system.
• When connecting in a 1:N system, make sure that the communications specifications are the same
for all the nodes that are connected. In addition, set a communications unit number for each node.
(For details, refer to the communications setting items for the communications unit number setting.)
• Use shielded twisted-pair cable for RS-485 signal wires.
●Wiring
• The total cable length is 500 m max.
• Use shielded twisted-pair cable with a wires size of AWG24 to AWG16.
• Do not solder the ends of power lines. Doing so may result in faulty contact.
• For ease of wiring and enhanced reliability, it is recommended that solderless terminals be crimped
to the control circuit wires.
• When solderless terminals are not used, the end of each wire for the control lines must be stripped
for approximately 6 mm.
• Cover the shield with tape so that the shield will not come into contact with other signal wires or
machines.
Name Model Description
K3SC Interface Converter
(OMRON) K3SC This Converter is used to convert RS-232C (or USB) to RS-485.
Command frame Command frame
Response frame
Host computer
3G3JE

Chapter 1
1-4
Communications Methods
●Applicable Line Wire Size, Terminal Screws, and Torque
Note For details on solderless terminal sizes and wiring methods, refer to the User's Manual.
●Wiring Diagram
Note For information on wiring between the USB/RS-485 or RS-232C/RS-485 Converter and the
host computer, refer to the manual for the Converter.
■Communications Parameters
With 3G3JE Communications Models (RS-485), communications parameters (communications unit
number, baud rate, data length, stop bits, and parity) can be set. The following table shows the com-
munications parameters and their setting ranges.
Terminal
screw size Torque Wire type Wire size Recommended wire size Cable
M3 0.5 to 0.6 N·m Stranded wire 0.2 to 1.5 mm2
(AWG24 to
AWG16)
0.75 mm2
(AWG18) Shielded twisted-pair
cable
Item Parameter No. Settings Default
Communications unit number P15 0 to 99 1
Communications baud rate P16 2.4, 4.8, 9.6, or 19.2 kbps 9.6 kbps
Communications data length P17 7 or 8 bits 7 bits
Communications stop bits P18 1 or 2 bits 2 bits
Communications parity P19 None, even, or odd Even
FG
+
−
SG
RS-485
RS-485
Terminal No. Signal
RS-485 (+)
RS-485 (−)
RS-485 (+)
RS-485 (−)
A
B
Host computer
RS-232C/USB Inverter 3G3JE-A2001-FLK
-A2002B-FLK
-A2004B-FLK
3G3JE node
at end of line
RS-485
Shield
Shield
120 Ω
(1/2 W)
Terminator
Use a 120 Ω(1/2 W) terminator.
Terminal No. Signal
A
B
USB/RS-485 or
RS-232C/RS-485
Converter
Signal
Communi-
cations
terminals
Communi-
cations
terminals

Chapter 1
1-5
Communications Methods
●Communications Unit Number
To communicate with the host computer, set a unit number for each Inverter so that the Inverters can
be recognized by the host computer. The unit number can be set to an integer value between 0 and
99.
Note When communicating with multiple Inverters, do not set the same unit number for more than
one Inverter. If the same unit number is set for more than one node, the system will not operate
correctly.
• Up to 32 nodes including the host computer can be connected in a 1:N system.
• When connecting a 1:N system, make sure that the communications specifications are the same for
all the node that are connected. In addition, set a unique communications unit number for each
node.
●Communications Baud Rate
This parameter sets the baud rate for communications with the host computer. The communications
baud rate settings are as follows:
2.4 (2,400 bps), 4.8 (4,800 bps), 9.6 (9,600 bps), and 19.2 (19,200 bps).
●Communications Data Length
This parameter sets the number of communications data bits. Set either “7 bits” or “8 bits.”
●Communications Stop Bits
This parameter sets the number of communications stop bits. Set either “1 bit” or “2 bits.”
●Communications Parity
This parameter sets the communications parity. Set the parity to “none,” “even,” or “odd.”
P15 Communications unit number Changesduring
operation No
Setting range 0 to 99 Default setting 1
P16 Communications baud rate Changesduring
operation No
Setting range 2.4/4.8/9.6/19.2 (kbps) Default setting 9.6
P17 Communications data length Changesduring
operation No
Setting range 7/8 (bits) Default setting 7
P18 Communications stop bits Changesduring
operation No
Setting range 1/2 (bits) Default setting 2
P19 Communications parity Changesduring
operation No
Selected item None/even/odd Default setting Even

Chapter 1
1-6
Communications Methods
●Communications Settings and Operation
With 3G3JE Communications Models, communications parameters are set in the initial settings
mode. Before communicating with the 3G3JE, use the Digital Operator keys to set all of the parame-
ters. For details on making settings other than communications parameters, refer to the 3G3JE
User's Manual.
• While the motor is stopped, the mode can be changed from RUN mode or adjustment mode to ini-
tial settings mode at any time by pressing the Mode Key for one second or longer.
• The mode can be changed from initial settings mode to RUN mode by pressing the Mode Key for
one second or longer while a parameter name (P01 to P21) is displayed. (To display a parameter
name, press the Enter Key while the set value is displayed.)
• After a set value has been changed, it goes into effect when the mode is changed to RUN mode. If
the power is turned OFF while a parameter is being set and before RUN mode is entered, the
changed set value will be lost.

Chapter 1
1-7
Communications Methods
Moving to Communications Parameters
MM
U
U
U
U
U
U
U
D
D
D
D
D
D
D
UD
Frequency reference
RUN Mode Screen Display
Initial Settings
Mode Screen Display
Communications
unit number
Communications
baud rate
Communications
data length
Communications
stop bits
Communications
parity
45.2
p01
p14
p15
p16
p17
p18
p19
p20
p21
Note: Communications
parameters
Power ON When the power is turned ON, the data display and indicators (setting
and monitoring indicators) will all light, and then the present frequency
reference be displayed on the data display.
When the Mode Key is pressed for 1 s or longer, the mode will change
from RUN mode to initial settings mode, and p01 will appear on the
data display.
Use the Increment and Decrement Keys to move to parameters P15
to P19. (The parameter that is to be set will be displayed.)
(See
note.)