Omron Sysmac CJ Series Instruction Manual

No. FST-ZTH120042A
OMRON Corporation
V750-series RFID System
Sysmac CJ-series
General-purpose Serial Connection Guide
(RS-232C)
P542-E1-01

About Intellectual Property Right and Trademarks
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Table of Contents
1. Related Manuals........................................................................................ 1
2. Terms and Definition................................................................................. 2
3. Remarks..................................................................................................... 3
4. Overview .................................................................................................... 5
5. Applicable Devices and Support Software.............................................. 6
5.1. Applicable Devices............................................................................. 6
5.2. Device Configuration.......................................................................... 7
6. Serial Communications Settings ............................................................. 9
6.1. Serial Communications Settings ........................................................ 9
6.2. Cable Wiring Diagram .......................................................................11
6.3. Example of Checking Connection .................................................... 12
7. Connection Procedure............................................................................ 13
7.1. Work Flow ........................................................................................ 13
7.2. Setting Up the RFID Reader/Writer.................................................. 15
7.3. Setting Up the PLC .......................................................................... 20
7.1. Transferring the Project Data ........................................................... 40
8. Initialization Method................................................................................ 46
8.1. Initializing the PLC ........................................................................... 46
8.2. Initializing the RFID Reader/Writer................................................... 48
9. Program.................................................................................................... 49
9.1. Overview .......................................................................................... 49
9.2. Communications Sequence ............................................................. 53
9.3. Error Detection Processing .............................................................. 54
9.4. Memory Maps .................................................................................. 56
9.5. Ladder Program ............................................................................... 59
9.6. Protocol Macro Data ........................................................................ 65
9.1. Timing Charts................................................................................... 77
9.2. Error Process ................................................................................... 78
10. Revision History...................................................................................... 81

1. Related Manuals
1
1. Related Manuals
The table below lists the manuals related to this document.
To ensure system safety, make sure to always read and heed the information provided in all
Safety Precautions, Precautions for Safe Use, and Precaution for Correct Use of manuals for
each device which is used in the system.
Cat. No. Model Manual name
W472 CJ2H-CPU6[]-EIP
CJ2H-CPU6[]
CJ2M-CPU[][]
CJ-series CJ2 CPU Unit Hardware User's Manual
W473 CJ2H-CPU6[]-EIP
CJ2H-CPU6[]
CJ2M-CPU[][]
CJ-series CJ2 CPU Unit Software User's Manual
W336 CJ1W-SCU[]1-V1
CJ1W-SCU[]2
CJ-series Serial Communications Boards and Serial
Communications Units Operation Manual
W446 - CX-Programmer Operation Manual
W344 - CX-Protocol Operation Manual
W474 CJ2[]-CPU[][] CJ-series Instructions Reference Manual
Z235 V750-BA50C04-US
V740-HS01[][]-[][]
V750-series UHF RFID System User’s Manual

2. Terms and Definition
2
2. Terms and Definition
Terms Explanation and Definition
Protocol macro The protocol macro is a function that stores a procedure (protocol) to
send/receive data to/from general-purpose external devices in a Serial
Communications Board or Serial Communications Unit. Data can be
sent/received by executing the PMCR instruction on the CPU Unit.
Protocol A unit of independent communication processing with a specific
general-purpose device. A protocol includes data transfer/reception
procedure. A protocol consists of multiple sequences.
Sequence A unit of independent communication processing which can be started by
executing the PMCR instruction of the ladder program. The sequence that
is started will execute steps registered in its own sequence.
Step A unit to execute any one of the followings: Send message, Receive
message, Send message and receive message, Clear process for receive
buffer, or Step wait. Up to 15 steps can be set per sequence.
Send message A communication frame (command) sent to an external general-purpose
device. A send message is read from the step in the sequence, and sent to
the external general-purpose device.
Receive message A communication frame (command) sent from an external general-purpose
device. A receive message is read from a step in a sequence and is
compared with data received from an external general-purpose device.
Matrix A matrix is used when an external general-purpose device sends multiple
types of communications frames (responses). Two or more communication
frames can be registered in one matrix.
Case A unit to register two or more communication frames (response) to the
matrix. One communication frame is registered as one case. Up to 15
types of cases can be registered per matrix.

3. Remarks
3
3. Remarks
(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 safety
circuit in order to ensure safety and minimize risks of abnormal occurrence.
(2) To ensure system safety, always read and heed the information provided in all Safety
Precautions, Precautions for Safe Use, and Precaution for Correct Use of manuals for
each device used in the system.
(3) The users are 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 of or whole part of this
document without the permission of OMRON Corporation.
(5) This document provides the latest information as of April 2013. The information on this
manual is subject to change for improvement without notice.

3. Remarks
The following notation is used in this document.
Precautions for Safe Use
Indicates precautions on what to do and what not to do to ensure using the product safely.
Precautions for Correct Use
Indicates precautions on what to do and what not to do to ensure proper operation and
performance.
Additional Information
Provides useful information.
Additional information to increase understanding or make operation easier.
4

4. Overview
4. Overview
This document describes the procedure for connecting the RFID Reader/Writer (V750 Series)
of OMRON Corporation (hereinafter referred to as OMRON) with the CJ2-series
Programmable Controller + Serial Communication Unit (hereinafter referred to as the PLC),
and provides the procedure for checking their connection.
Refer to the serial communications settings described in 6. Serial Communications Settings
and 7. Connection Procedure to understand the setting method and key points to connect the
devices via serial communications.
The user program in the prepared CX-Programmer project file and the protocol data in the
prepared CX-Protocol project file are used to check the serial connection by sending/receiving
the message of “Read product type and version (sequence No. 900)” to/from the destination
device.
Prepare the latest CX-Programmer project file and CX-Protocol project file beforehand. To
obtain the file, contact your OMRON representative.
Name File name Version
CX-Programmer project
file (extension: cxp)
OMRON_V750_PMCR232C_EV1
02.cxp
Ver.1.02
CX-Programmer project
file (extension: psw)
OMRON_V750_PMCR_EV100.ps
w
Ver.1.00
*Hereinafter, the CX-Programmer project file is referred to as the “project file”.
The user program in the project file is referred to as the “ladder program” or “program”.
The CX-Protocol project file is referred to as the “protocol macro data”.
This document aims to explain the wiring method and communications settings
necessary to connect the corresponding devices and provide the setting
procedure. The program used in this document is designed to check if the
connection was properly established, and is not designed to be constantly used
at a site. Therefore, functionality and performances are not sufficiently taken into
consideration. When you construct an actual system, please use the wiring
method, communications settings and setting procedure described in this
document as a reference and design a new program according to your
application needs.
5

5. Applicable Devices and Support Software
5. Applicable Devices and Support Software
5.1. Applicable Devices
The applicable devices are given below.
Manufacturer Name Model
OMRON CJ2-series CPU Unit CJ2[]-CPU[][]
OMRON Serial Communications Unit CJ1W-SCU[]1-V1
CJ1W-SCU[]2
OMRON RFID Reader/Writer
(complies with FCC and EN)
V750-BA50C04-US
OMRON Antenna V740-HS01[][]
OMRON Antenna Cable V740-A01 [][]M
Additional Information
As applicable devices above, the devices with the models and versions listed in Section 5.2.
are actually used in this document to describe the procedure for connecting devices and
checking the connection.
You cannot use devices with versions lower than the versions listed in Section 5.2.
To use the above devices with versions not listed in Section 5.2 or versions higher than those
listed in Section 5.2, check the differences in the specifications by referring to the manuals
before operating the devices.
Additional Information
This document describes the procedure to establish the network connection. Except for the
connection procedure, it does not provide information on operation, installation or wiring
method. It also does not describe the function or operation of the devices. Refer to the
manuals or contact your OMRON representative.
6

5. Applicable Devices and Support Software
5.2. Device Configuration
The hardware components to reproduce the connection procedure of this document are as
follows.
7
Manufacturer Name Model Version
OMRON Serial Communications Unit CJ1W-SCU42 Ver.2.0
OMRON Switching Hub W4S1-05C Ver.1.0
OMRON CPU Unit CJ2M-CPU12 Ver.2.0
OMRON Power Supply Unit CJ1W-PA202
OMRON CX-One CXONE-AL[][]C-V4
/AL[][]D-V4
Ver.4.xx
OMRON CX-Programmer (Included in CX-One) Ver.9.41
OMRON CX-Protocol (Included in CX-One) Ver.1.96
OMRON CX-Programmer project file
(ladder program)
OMRON_V750_PMCR232
C_EV102.cxp
Ver.1.02
OMRON CX-Programmer project file
(protocol macro data)
OMRON_V750_PMCR_EV
100.psw
Ver.1.00
- Personal computer
(English OS:Windows XP)
-
- USB cable
(USB 2.0 type B connector)
-
- Serial cable (RS-232C) -
- LAN cable (for setting) -
OMRON RFID Reader/Writer V750-BA50C04-US Ver.102-
102-103-0
OMRON Antenna (Circular) (4 max.) V740-HS01CA
OMRON Antenna Cable V740-A01 [][]M
OMRON AC Adapter (Included) -
Precautions for Correct Use
Prepare the latest project file and protocol macro data beforehand.
(To obtain the files, contact your OMRON representative.)
Precautions for Correct Use
Update the CX-Programmer to the version specified in this section or higher version using the
auto update function. If a version not specified in this section is used, the procedures
described in Section 6 and subsequent sections may not be applicable. In that case, use the
equivalent procedures described in the CX-Programmer Operation Manual (Cat.No. W446).
CJ2M-CPU12
CJ1W-SCU42
Personal computer
(CX-One installed,
OS: Windows XP)
USB cable
LAN cable
Switching Hub
(W4S1-05C)
Antenna
(V740-HS01CA)
RFID Reader/Writer
(V750-BA50C04-US)
Serial cable
LAN cable
Antenna Cable
(V740-A01 [][]M)
AC Adapter
(included)

5. Applicable Devices and Support Software
Additional Information
It may not be possible to reproduce the same operation with different devices or versions.
Check the configuration, model and version. If they are different from your configuration.
Contact your OMRON representative.
Additional Information
For information on the serial cable (RS-232C), refer to 3-4 RS-232C and RS-422A/485
Wiring in the CJ-series Serial Communications Boards and Serial Communications Units
Operation Manual (Cat.No. W336).
Additional Information
The system configuration in this document uses USB for the connection between the
personal computer and PLC.
8

6. Serial Communications Settings
6. Serial Communications Settings
This section provides the specifications of the communications parameters and cable wiring that are
set in this document.
Additional Information
To perform communications without using the settings specified in this section, you need to
modify the program. For details on the program, refer to 9. Program.
6.1. Serial Communications Settings
The settings required for serial communications are given below.
6.1.1. Communications Settings between the Personal Computer and the
RFID Reader/Writer
The setting example below is used to explain the setting procedure of the RFID Reader/Writer
by using the personal computer.
Setting item Personal computer used for
setting
RFID Reader/Writer
IP address 192.168.1.1 192.168.1.200 (Default)
Subnet mask 255.255.255.0 255.255.255.0 (Default)
Gateway ---.---.---.--- 192.168.1.254 (Default)
*In this document, the gateway setting is unnecessary because the connection is made in
the same segment.
6.1.2. Communications Settings between the Serial Unit and the RFID
Reader/Writer
The settings for serial communications are as follows:
Setting item Serial Communications
Unit
RFID Reader/Writer
Unit number 0 -
Communications (connection) port Port 2 (RS-232C) -
Serial communications mode Protocol macro -
Data length 7 bits (Default) 7 bits (Default)
Stop bits 2 bits (Default) 2 bits (Default)
Parity Even (Default) Even (Default)
Baud rate 57,600 bps 57,600 bps (Default)
Protocol macro Transmission mode Full-duplex -
Terminator - [CR][LF] (Fixed)
9

6. Serial Communications Settings
Precautions for Correct Use
This document describes the procedure for setting the CJ1W-SCU42 Serial Communications
Unit when unit number 0 and communications port 2 are used. To connect devices under
different conditions, refer to 9. Program and create a program by changing the allocation
areas and PMCR control word.
10

6. Serial Communications Settings
6.2. Cable Wiring Diagram
For details on the cable wiring, refer to Section 3 Installation and Wiring of the CJ-series Serial
Communications Boards and Serial Communications Units Operation Manual (Cat.No. W336)
and Section 4 Diagnosis and Maintenance-Wiring for cable of V750-series UHF RFID
System User’s Manual(Cat.No. Z235). Check the connector configuration and pin assignment
for wiring.
■Connector configuration and pin assignment
<OMRON CJ1W-SCU42> Applicable connector: D-sub 9 pin
<OMRON V750-BA50C04-US> Applicable connector: D-sub 9 pin
■Cable/Pin arrangement
Serial Communications Unit
(CJ1W-SCU42)
RFID Reader/Writer
(V750-BA50C04-US)
Signal
name
Pin No. Pin No. Signal
name
FG 1 1
SD 2 2 RD
RD 3 3 SD
RS 4 4
CS 5 5 SG
5V 6 6
DR 7 7 RS
ER 8 8 CS
SG 9 9
RS-232C
interface
FG Shell Shell
RS-232C
interface
D-sub 9-pin
Cable connector type: Male
D-sub 9-pin
Cable connector type: Female
11

6. Serial Communications Settings
6.3. Example of Checking Connection
Example of Checking Connection
This document uses an example of the ladder program and protocol macro data in which the
PLC sends/receives a message to/from the RFID Reader/Writer.
The PLC and RFID Reader/Writer send and receive the message of “Sequence No. 900 (read
product type and version)”. The following figure outlines the operation.
PLC
CPU Unit Serial Communications Unit RS-232C RFID Reader/Writer
Project file
Ladder program
PMCR
Send data
Receive data
Sequence No.900
(Reading the type and
version)
Protocol macro data
Sequence No.1
Sequence No.2
Sequence No.900
5501 onwards
Receive data
storage area
Executing the protocol
macro instruction
12

7. Connection Procedure
13
7. Connection Procedure
This section explains the procedure for connecting the RFID Reader/Writer to the PLC via
serial communications.
This document explains the procedures for setting up the PLC and RFID Reader/Writer from
the factory default setting. For the initialization, refer to Section 8 Initialization Method.
7.1. Work Flow
Take the following steps to connect the RFID Reader/Writer to the PLC via serial
communications.
7.2. Setting Up the RFID Reader/Writer Set up the RFID Reader/Writer.
↓
7.2.1. Parameter Setting Set the parameters of the RFID Reader/Writer.
↓
7.3. Setting Up the PLC Set up the PLC.
↓
7.3.1. Hardware Setting Set the hardware switches on the Serial
Communications Unit.
↓
7.3.2. Opening the Project File and
Connecting Online with PLC
Start the CX-Programmer, open the project file and
connect online with the PLC.
↓
7.3.3. Creating I/O Table Create the I/O table of the PLC.
↓
7.3.4. Parameter Setting Set the parameters of the Serial Communications
Unit.
↓
7.3.5. Transferring the Project Data Transfer the project data to the PLC.
↓
7.3.6. Starting the CX-Protocol and
Connecting Online with PLC
Start the CX-Protocol and connect online with the
PLC.
↓
7.3.7. Transferring the Protocol Macro
Data
Transferring the protocol macro data to the Serial
Communications Unit.
↓
7.4. Connection Status Check Execute the program and confirm that serial
communications are normally performed.
↓
7.4.1 Starting the trace operation Start the trace operation with the CX-Protocol.
↓
7.4.2. Executing the Program Execute the program with the CX-Programmer.

7. Connection Procedure
14
↓
7.4.3. Checking the Trace Data Check the trace data of the CX-Protocol and confirm
that correct data are sent and received.
↓
7.4.4. Checking the Receive Data Confirm that the correct data are written to the I/O
memory of the PLC by using the CX-Programmer.

7. Connection Procedure
7.2. Setting Up the RFID Reader/Writer
Set up the RFID Reader/Writer.
7.2.1. Parameter Setting
Set the parameters of the RFID Reader/Writer. For the setting, a web browser (e.g., Internet
Explore) that can execute Java software is required. Install the software when necessary so
that Java software can operate.
Set the IP address of the personal computer to 192.168.1.1.
Precautions for Correct Use
Use a personal computer to set the parameters of the RFID Reader/Writer.
Note that you may need to change the settings of the personal computer depending on the
status of the personal computer.
1
Connect the antenna to the
antenna port on the side of the
RFID Reader/Writer.
(Side of RFID Reader/Writer)
2
Connect the Switching Hub to
the Ethernet port on the other
side of the RFID Reader/Writer
using the LAN cable.
Connect the included AC
Adapter cable to the DC power
input.
(Other side of RFID Reader/Writer)
15

7. Connection Procedure
3
Start Internet Explorer from the
personal computer that is
connected to the Switching Hub.
*Set the IP address of the
personal computer to
192.168.1.1. Use the following
procedure to check the IP
address of the personal
computer.
(1)Click Network Connections
on the Control Panel.
(2)Double-click Local Area
Connection on the Network
Connections.
(3)Click the Support Tab on the
Local Area Connection Status
Dialog Box.
(4)Confirm that the IP address is
192.168.1.1.
4
Click Internet Options from the
Tools Menu of the Internet
Explorer.
16

7. Connection Procedure
5
The Internet Options Dialog Box
is displayed. Select the
Connections Tab.
6
On the Internet Options Dialog
Box, click the LAN Settings
Button.
17