Omron E5*D series Instruction Manual

Machine Automation Controller NJ-series
General-purpose Serial
Connection Guide
(RS-485 CompoWay/F)
OMRON Corporation
Digital Temprature Controller
(E5□D / E5□C / E5□C-T)
P520-E1-02

About Intellectual Property Rights and Trademarks
Microsoft product screen shots reprinted with permission from Microsoft Corporation.
Windows is a registered trademark of Microsoft Corporation in the USA and other countries.
EtherCAT® is registered trademark and patented technology, licensed by Beckhoff Automation
GmbH, Germany.
Sysmac is a trademark or registered trademark of OMRON Corporation in Japan and other
countries for OMRON factory automation products.
Company names and product names in this guide are the trademarks or registered trademarks
of their respective companies.

Table of Contents
1. Related Manuals........................................................................................ 1
2. Terms and Definitions............................................................................... 1
3. Precautions................................................................................................ 2
4. Overview .................................................................................................... 3
5. Applicable Devices and Device Configuration ....................................... 4
Applicable Devices............................................................................. 45.1.
Device Configuration.......................................................................... 65.2.
6. Serial Communications Settings ............................................................. 8
Parameters ........................................................................................ 86.1.
Cable Wiring ...................................................................................... 96.2.
7. Serial Communications Connection Procedure ................................... 10
Work Flow........................................................................................ 107.1.
Digital Temperature Controller Setup................................................117.2.
Controller Setup............................................................................... 157.3.
Serial Communication Status Check................................................ 307.4.
8. Initialization Method................................................................................ 32
Initializing a Controller...................................................................... 328.1.
Initializing a Digital Temperature Controller...................................... 338.2.
9. Program.................................................................................................... 34
Overview.......................................................................................... 349.1.
Destination Device Command.......................................................... 409.2.
Error Detection Processing.............................................................. 439.3.
Variables .......................................................................................... 449.4.
ST Program...................................................................................... 469.5.
Timing Charts................................................................................... 519.6.
Error Processing .............................................................................. 529.7.
10. Revision History .................................................................................. 56

1
．
Related Manuals
1
1. Related Manuals
To ensure system safety, make sure to always read and follow the information provided in all
Safety Precautions and Precautions for Safe Use in the manuals for each device which is
used in the system.
The table below lists the manuals pertaining to this guide.
Cat. No. Model Manual name
W500 NJ501-□□□□
NJ301-□□□□
NJ101-□□□□
NJ-series
CPU Unit
Hardware User's Manual
W501 NJ501-□□□□
NJ301-□□□□
NJ101-□□□□
NJ/NX-series
CPU Unit
Software User's Manual
W502 NJ501-□□□□
NJ301-□□□□
NJ101-□□□□
NJ/NX-series
Instructions Reference Manual
W504 SYSMAC-SE2□□□ Sysmac Studio Version 1 Operation Manual
W494 CJ1W-SCU□2 CJ-series
Serial Communications Units
Operation Manual
for NJ-series CPU Unit
H225 E5□D Digital Temperature Controllers
Communications Manual
H224 E5□D Digital Temperature Controllers User’s Manual
H175 E5□C Digital Temperature Controllers
Communications Manual
H174 E5□C Digital Temperature Controllers User’s Manual
H186 E5□C-T Digital Temperature Controllers
Programmable Type
Communications Manual
H185 E5□C-T Digital Temperature Controllers
Programmable Type User’s Manual
2. Terms and Definitions
Term Explanation and Definition
Serial Gateway
mode This is a function of PLC that performs serial communications by automatically converting a message (command data) to a specified
protocol (CompoWay/F, Modbus-RTU, or Modbus-ASCII), depending on
the type of message.

3
．
Precautions
2
3. Precautions
(1) Understand the specifications of devices which are used in the system. Allow some
margin for ratings and performance. Provide safety measures, such as installing a safety
circuit, in order to ensure safety and minimize the risk of abnormal occurrence.
(2) To ensure system safety, make sure to always read and follow the information provided in
all Safety Precautions and Precautions for Safe Use in the manuals for each device
which is used in the system.
(3) The user is encouraged to confirm the standards and regulations that the system must
conform to.
(4) It is prohibited to copy, to reproduce, and to distribute a part or the whole of this guide
without the permission of OMRON Corporation.
(5) The information contained in this guide is current as of March 2018. It is subject to
change for improvement without notice.
The following notations are used in this guide.
Indicates a potentially hazardous situation which, if not avoided,
may result in minor or moderate injury, or may result in serious
injury or death. Additionally there may be significant property
damage.
Indicates a potentially hazardous situation which, if not avoided,
may result in minor or moderate injury or property damage.
Precautions for Correct Use
Precautions on what to do and what not to do to ensure proper operation and performance.
Additional Information
Additional information to read as required.
This information is provided to increase understanding or make operation easier.
Symbol
The filled circle symbol indicates operations that you must do.
The specific operation is shown in the circle and explained in the text.
This example shows a general precaution for something that you must do.

4
．
Overview
3
4. Overview
This guide describes procedures for connecting a Digital Temperature Controller (E5□D,
E5□C or E5□C-T) to an NJ-series Machine Automation Controller + Serial Communications
Unit (hereinafter referred to as the "Controller") via serial communications, both produced by
OMRON Corporation (hereinafter referred to as "OMRON"), and for checking their
communication status.
Refer to Section 6. Serial Communications Settings and Section 7. Serial Communications
Connection Procedure to understand setting methods and key points to send or receive a
message via serial communications.
The program in the prepared Sysmac Studio project file is used to check the serial connection
by sending or receiving a message of ''Read Controller Attributes'' to/from the Digital
Temperature Controller.
■The send/receive messages of "Read Controller Attributes''
Controller Serial communications
(RS-485) Digital Temperature
Controller
Sending command data Executing the command
Receiving response data
and storing in memory Returning response data
Prepare the Sysmac Studio project file with a latest version beforehand.
To obtain the Sysmac Studio project file, contact your OMRON representative.
Name
File name
Version
Sysmac Studio project file
(extension: csm2) P520_NJ_CWF485_OMRON_E5CD_V100. csm2 Ver.1.00
Hereinafter, the Sysmac Studio project file is referred to as “the project file".
This guide aims to explain wiring methods and communications settings
necessary to connect corresponding devices and provides the setting
procedures. The program used in this guide is not designed to be constantly
used at a site but is designed to check if the connection is properly established.
Both functionalities and performances are therefore not fully considered for the
program.
When you actually construct a system, please use the wiring methods,
communications settings and setting procedures described in this guide as a
reference, and design a program according to your application needs.
Command data
Response data

5
．
Applicable Devices and Device Configuration
4
5. Applicable Devices and Device Configuration
Applicable Devices5.1.
The applicable devices are as follows:
Manufacturer Name Model
OMRON
NJ-series CPU Unit
NJ501-□□□□
NJ301-□□□□
NJ101-□□□□
OMRON
Serial Communications Unit
CJ1W-SCU□2
OMRON Digital Temperature Controller
E5CD-□□2□□M-002
E5CD-□□2□□M-004
E5ED-□□4□□M-004
E5ED-□□4□□M-008
E5ED-□□4□□M-022
E5CC-□□□□□M-002
E5CC-□□□□□M-003
E5CC-□□□□□M-004
E5AC-□□□□SM-004
E5AC-□□□□SM-008
E5AC-□□□□SM-009
E5AC-□□□□SM-012
E5AC-□□□□SM-014
E5EC-□□□□□M-004
E5EC-□□□□□M-008
E5EC-□□□□□M-009
E5EC-□□□□□M-012
E5EC-□□□□□M-014
E5DC-□□□□□M-002
E5DC-□□□□□M-015
E5GC-□□□□□M-015
E5CC-T□□3□SM-002
E5CC-T□□3□SM-003
E5CC-T□□3□SM-004
E5AC-T□□4□SM-004
E5AC-T□□4□SM-008
E5AC-T□□4□SM-020
E5AC-T□□4□SM-022
E5EC-T□□4□SM-004
E5EC-T□□4□SM-008
E5EC-T□□4□SM-020
E5EC-T□□4□SM-022

5
．
Applicable Devices and Device Configuration
5
Precautions for Correct Use
In this guide, the devices with models and versions listed in 5.2. Device Configuration are
used as examples of applicable devices to describe the procedures for connecting the
devices and checking their connection.
You cannot use devices with versions lower than the versions listed in 5.2.
To use the above devices with models not listed in 5.2. or versions higher than those listed in
5.2., check the differences in the specifications by referring to the manuals before operating
the devices.
Additional Information
This guide describes the procedures for establishing the network connection.
It does not provide information on operation, installation, wiring method, device functionality,
or device operation, which is not related to the connection procedures.
Refer to the manuals or contact your OMRON representative.

5
．
Applicable Devices and Device Configuration
6
Device Configuration5.2.
The hardware components to reproduce the connection procedures in this guide are as
follows:
Manufacturer Name Model Version
OMRON
Serial Communications Unit
CJ1W-SCU42
Ver.2.0
OMRON NJ-series CPU Unit NJ501-1500 Ver.1.16
OMRON Power Supply Unit NJ-PA3001
OMRON
Sysmac Studio
SYSMAC-SE2□□□
Ver.1.21
OMRON Sysmac Studio project file P520_NJ_CWF485_OMRON_E
5CD_V100.csm2 Ver.1.00
- Personal computer
(OS: Windows 7) -
- USB cable
(USB 2.0 type B connector) -
-
Serial cable (RS-485)
-
OMRON Digital Temperature Controller E5CD-RX2A6M-002
Precautions for Correct Use
Prepare the project file with a latest version beforehand.
To obtain the project file, contact your OMRON representative.
Precautions for Correct Use
Update Sysmac Studio to the version specified in this Clause 5.2. or to a higher version.
If you use a version higher than the one specified, the procedures and related screenshots
described in Section 7. and the subsequent sections may not be applicable.
In that case, use the equivalent procedures described in this guide by referring to the Sysmac
Studio Version 1 Operation Manual (Cat. No. W504).
Precautions for Correct Use
Turn ON the terminating resistance switch on the Serial Communications Unit and connect
120 Ω (1/2 W) terminating resistance to the terminals of the Digital Temperature Controller at
either end of the RS-422A/485 transmission path.
Personal computer
(Sysmac Studio installed,
OS: Windows 7)
NJ501-1500
＋
CJ1W-SCU42
Serial cable
(RS-485)
E5CD-RX2A6M-002
USB cable

5
．
Applicable Devices and Device Configuration
7
Additional Information
For information on the serial cable (RS-485), refer to 3-3 RS-232C and RS-422A/485 Wiring
of the CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit (Cat.
No. W494).
Additional Information
The system configuration in this guide uses USB for the connection between the personal
computer and the Controller. For information on how to install the USB driver, refer to A-1
Driver Installation for Direct USB Cable Connection of the Sysmac Studio Version 1
Operation Manual (Cat. No. W504).

6
．
Serial Communications Settings
8
6. Serial Communications Settings
This section describes the parameters and cable wiring, which are set up in this guide.
Parameters6.1.
The following parameters are required to connect the Controller and the Digital Temperature
Controller via serial communications.
Setting item Controller
(Serial Communications Unit) Digital Temperature Controller
Device name J01 -
Unit No. 0 -
Communications Unit No.
(slave address) - 1 (default)
Serial communications port
(connection) Port 1 (RS-422A/485) -
Terminating resistance Terminating resistance ON
(TERM: ON）-
2-wire or 4-wire 2-wire (WIRE: 2) 2-wire (fixed)
Serial communications mode Serial Gateway -
Data length
(transmission character)
7 bits (default) 7 bits (default)
Stop bits 2 bits (default) 2 bits (default)
Parity (parity bit) Even (default) Even (default)
Baud rate
9,600 bps (default)
9,600 bps (default)
Communications method - CompoWay/F (default)
Send data wait time - 20 ms (default)
Precautions for Correct Use
The connection procedure described in this guide assumes that the following Serial
Communications Unit, port and setting values are used.
Model: CJ1W-SCU42
Serial communications port: Port 1
Unit No.: 0
Device name: J01
If you connect devices under different conditions, refer to Section 9. Program and create a
program by changing the variable names and setting values.

6
．
Serial Communications Settings
9
Cable Wiring6.2.
Refer to Section 3 Installation and Wiring of the CJ-series Serial Communications Units
Operation Manual for NJ-series CPU Unit (Cat. No. W494) for details on cable wiring.
Check the connector configurations and pin assignments before wiring.
■Connector configuration and pin assignment
Digital Temperature Controller (E5CD) applicable connector: Terminal block
Pin No.
Signal name
Input/Output
1-12
13 B(+) Input/Output
14 A(-) Input/Output
15-18
Serial Communications Unit (CJ1W-SCU42) applicable connector: Terminal block
Pin No. Symbol Signal name Input/Output
1 (See note 1.) RDA Receive data - Input
2 (See note 1.) RDB Receive data + Input
3 (See note 1.) SDA Send data - Output
4 (See note 1.) SDB Send data + Output
5 (See note 2.)
FG
Shield
-
Note 1: For 2-wire connection, use either pins 1 and 2 or pins 3 and 4.
2: Pin 5 (Shield) is connected to the GR terminal on the Power Supply Unit though the
Serial Communications Unit. The cable shield can thus be grounded if you ground the
GR terminal of the Power Supply Unit.
■Cable and pin assignment
Serial Communications
Unit (CJ1W-SCU42) Digital Temperature Controller (E5CD)
RS-422A/
485
interface
Signal
name Pin No. Terminal No. Signal name RS-485 interface
RDA- 1 13 B(+)
RDB+ 2 14 A(-)
SDA- 3
SDB+
4
FG 5
Terminal block Terminal block
Connect 120 Ω (1/2 W) terminating resistance
between B(+) and A(-) of the Digital Temperature
Controller that is connected at the end of the
network.
Additional Information
For information on the connector configurations and pin assignments of the other models,
refer to their respective manuals.
Terminating resistance

7
．
Serial Communications Connection Procedure
10
7. Serial Communications Connection Procedure
This section describes the procedures for connecting the Controller to the Digital Temperature
Controller via serial communications. The procedures for setting up the Controller and the
Digital Temperature Controller in this guide are based on the factory default settings.
For the initialization, refer to Section 8. Initialization Method.
Work Flow7.1.
Take the following steps to connect the Controller and the Digital Temperature Controller via
serial communications and to send or receive a message.
7.2. Digital Temperature Controller
Setup
Set up the Digital Temperature Controller.
↓
7.2.1. Parameter Settings
Set parameters for the Digital Temperature
Controller.
↓
7.3. Controller Setup
Set up the Controller.
↓
7.3.1. Hardware Settings
Set the hardware switches on the Serial
Communications Unit and connect the cables.
↓
7.3.2. Starting Sysmac Studio and
Importing the Project File
Start Sysmac Studio and import the project file.
↓
7.3.3. Checking the Parameters and
Building Programs
Check the parameters of the Serial
Communications Unit, execute the program check
on the project data, and build the project programs.
↓
7.3.4. Going Online and Transferring
the Project Data
Go online with Sysmac Studio and transfer the
project data to the Controller.
↓
7.3.5. Transferring the Unit Settings
Transfer the setting data of the Serial
Communications Unit.
↓
7.4. Serial Communication Status
Check
Start the send/receive processing and confirm that
serial communications performs normally.
↓
7.4.1. Checking Received Data
Check that correct data is written to the variables of
the Controller in Sysmac Studio.

7
．
Serial Communications Connection Procedure
11
Digital Temperature Controller Setup7.2.
Set up the Digital Temperature Controller.
7.2.1. Parameter Settings
Set parameters for the Digital Temperature Controller.
1
Connect the power supply and a
serial cable to the terminal block
located on the back of Digital
Temperature Controller.
*Only the parameters in
Communications Setting Level
are described in this guide.
If you use the parameters in
Adjustment Level that is
specific to each of the models,
refer to their respective
manuals.
2
Check the positions of each of
the keys, No.1 and No. 2
displays and Operation
indicators.
In this guide, the keys are
described as follows:
L (Level) Key
M (Mode) Key
U (Up) Key
D
(Down) Key
3
Turn ON Digital Temperature
Controller.
4
The current temperature is
displayed on No. 1 display once
Digital Temperature Controller is
turned ON. (Operation Level)
Press the L(Level) Key for at
least 3 seconds. L(Level) Key for at least 3 seconds
Serial cable
(RS-485)

7
．
Serial Communications Connection Procedure
12
5
"in-t" (Initial Setting Level) is
displayed on No. 1 display.
Press the L(Level) Key again
for less than 1 second.
L(Level) Key
6
The display changes to
Communications Setting Level.
"psel" (Protocol Setting) and
"cwf" (CompoWay/F) are
displayed on No. 1 and No. 2
displays, respectively.
*If the setting value is different,
press the U(Up) or D(Down)
Key to change the parameter.
Press the M(Mode) Key.
< Setting value>
CWF / Mod
(default: CWF)
CWF: CompoWay/F
Mod: Modbus-RTU
M (Mode) Key
7
"u-no" (Communications Unit
No.) is displayed.
Check that Communications
Unit No. is 1.
*If the setting value is different,
change it in the same way as
step 6.
Press the M(Mode) Key.
<Setting value>
0 to 99 (default: 1)
M(Mode) Key
8
"bps" (Communications Baud
Rate) is displayed.
Check that Communications
Baud Rate is 9.6 kbps.
*If the setting value is different,
change it in the same way as
step 6.
Press the M(Mode) Key.
<Setting value>
9.6, 19.2, 38.4 or
57.6 kbps
(default: 9.6)
M (Mode) Key

7
．
Serial Communications Connection Procedure
13
9
"len" (Communications Data
Length) is displayed.
Check that Communications
Data Length is 7 bits.
*If the setting value is different,
change it in the same way as
step 6.
Press the M(Mode) Key.
<Setting value>
7 or 8 bits (default: 7)
M (Mode) Key
10
"sbit" (Communications Stop
Bits) is displayed.
Check that Communications
Stop Bits is 2 bits.
*If the setting value is different,
change it in the same way as
step 6.
Press the M(Mode) Key.
<Setting value>
1 or 2 bits (default: 2)
M(Mode) Key
11
"prty" (Communications Parity)
is displayed.
Check that Communications
Parity is EVEN.
*If the setting value is different,
change it in the same way as
step 6.
Press the M(Mode) Key.
<Setting value>
NONE, EVEN or ODD
(default: EVEN)
M (Mode) Key
12
"sdwt" (Send Data Wait Time) is
displayed.
Check that Send Data Wait Time
is 20.
*If the setting value is different,
change it in the same way as
step 6.
Press the L(Level) Key for less
than 1 second.
<Setting value>
0 to 99 ms (default: 20)
L (Level) Key.

7
．
Serial Communications Connection Procedure
14
13
"in-t" ((Initial Setting Level) is
displayed.
Press the L(Level) Key for at
least 1 second.
L (Level) Key for at least 1 second
14
The display returns to Operation
Level as shown in step 4.
15
Turn OFF Digital Temperature
Controller.

7
．
Serial Communications Connection Procedure
15
Controller Setup7.3.
Set up the Controller.
7.3.1. Hardware Settings
Set the hardware switches on the Serial Communications Unit and connect the cables.
Precautions for Correct Use
Make sure that the power supply is OFF when you set up.
If it is ON, the settings described in the following steps and subsequent procedures may not
be applicable.
1
Make sure that Controller is
powered OFF.
2
Check the positions of the
hardware switches and Port 1
on the front panel of Serial
Communications Unit by
referring to the figure on the
right.
3
Set Unit number switch to 0.
*The unit number is set to 0 as
the factory default setting.
4
Set Terminating resistance
ON/OFF switch to ON.
(Terminating resistance ON)
5
Set 2-wire or 4-wire switch to 2.
(2-wire)
・TERM
(Terminating resistance ON/OFF switch)
OFF: Terminating resistance OFF
ON: Terminating resistance ON
・WIRE (2-wire or 4-wire switch)
2: 2-wire, 4: 4-wire

7
．
Serial Communications Connection Procedure
16
6
Connect Serial Communications
Unit to Controller as shown on
the right.
Connect Digital Temperature
Controller and Port 1 on Serial
Communications Unit with the
serial cable.
Connect Personal computer and
Controller with a USB cable.
Serial cable
(RS-485)
Serial Communications Unit
USB
Cable
Controller
End Cover
Power Supply Unit
CPU Unit
Personal
computer

7
．
Serial Communications Connection Procedure
17
7.3.2. Starting Sysmac Studio and Importing the Project File
Start Sysmac Studio and import the project file.
Install Sysmac Studio and the USB driver on your personal computer beforehand.
1
Start Sysmac Studio.
*If the User Account Control
Dialog Box is displayed at start,
make a selection to start
Sysmac Studio.
2
Click Import.
3
The Import file Dialog Box is
displayed.
Select P520_NJ_CWF485_
OMRON_E5CD_V100.csm2
and click Open.
*Obtain the project file from
OMRON.