Omron V720 Series Operation Manual
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Omron V720 Series Operation Manual

Omron V720 Series Operation Manual

Electromagnetic inductive rfid system, id controller
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Cat. No. S908-E1-2
V720-series
Electromagnetic Inductive
RFID System
9&'#'
ID Controller
OPERATION MANUAL

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Summary of Contents for Omron V720 Series

  • Page 1 Cat. No. S908-E1-2 V720-series Electromagnetic Inductive RFID System 9&'#' ID Controller OPERATION MANUAL...
  • Page 2 V720-series Electromagnetic Inductive RFID System V720-CD1D/CD2D ID Controller Operation Manual Revised August 2001...
  • Page 4 OMRON. No patent liability is assumed with respect to the use of the information contained herein. Moreover, because OMRON is constantly striving to improve its high-quality products, the information contained in this manual is subject to change without notice.

  • Page 6: Table Of Contents

    TABLE OF CONTENTS PRECAUTIONS................xi Intended Audience........................General Precautions........................Safety Precautions ........................Application Precautions ......................xiii Correct Use..........................xiii Applicable Standards......................... xiii EN/IEC Standards ........................FCC Notices ..........................SECTION 1 Characteristics and System Configuration ......1-1 1-1 Features ............................. 1-2 System Configuration........................ 1-3 Outline of Operation........................
  • Page 7 TABLE OF CONTENTS SECTION 5 Communications Functions............5-1 5-1 Command and Response Frame Structure ................5-2 Command List........................... 5-3 Communications Commands and Responses................5-4 Command Connection....................... 5-30 5-5 Communications Methods ......................5-32 5-6 Data Type ..........................5-43 5-7 Tag Number Setting ........................5-44 5-8 Communications Phase ......................
  • Page 8 About this Manual: This manual describes the installation and operation of the V720-series Electromagnetic Inductive RFID System (V720-CD1D or V720-CD2D ID Controller) and includes the sections described below. Please read this manual carefully and be sure you understand the information provided before attempting to install and operate the System.

  • Page 10: Precautions

    PRECAUTIONS This section provides general precautions for using the V720-series Electromagnetic Inductive RFID System and related devices. The information contained in this section is important for the safe and reliable application of the V720-series Electromagnetic Inductive RFID System. You must read this section and understand the information contained before attempting to set up or operate a V720-series Electromagnetic Inductive RFID System.

  • Page 11: Intended Audience

    System be used for the specified purpose and under the specified conditions, especially in applications that can directly or indirectly affect human life. You must consult with your OMRON representative before applying the System to the above-mentioned applications. Safety Precautions Always connect to a ground of 100 W or less when installing the System.

  • Page 12: Application Precautions

    Applicable Standards Application Precautions Caution Be sure to observe the following precautions to ensure safety in installing or operating the System. · Do not use the System in an environment subject to flammable, explosive, or corrosive gases. · Do not attempt to take any Units apart, to repair any Units, or to modify any Units in any way.

  • Page 13: Iec Standards

    FCC Notices EN/IEC Standards · In connection with EC unification, eighteen European countries will integrate their conventional safety standards into EN standards. When the EN standards come into effect, they will apply as the unified European standards in place of the conventional safety standards. ·...

  • Page 14: Characteristics And System Configuration

    SECTION 1 Characteristics and System Configuration This section provides the characteristics and system configuration of the V720 System as well as an outline of its operation. Features ..........................System Configuration......................1-2-1 Example of 1-to-1 System Configuration ................. 1-2-2 Example of 1-to-N System Configuration ................ Outline of Operation......................

  • Page 15: Features

    Features Section 1-1 Features The V720-series Electromagnetic Inductive RFID System is ideal for the construction of highly functional, long-distance wireless ID systems for material control and logistics. V720-D52P30 V720-CD1D/CD2D V720-H01-E V720-D52P40 V720-CD1D/CD2D The V720-CD1D/CD2D ID Controller incorporates an RS-232C interface, thus connecting to personal computers and Programmable Logic Controllers ID Controller (PLCs) over RS-232C to process large amounts of data flexibly with simple...

  • Page 16: System Configuration

    System Configuration Section 1-2 System Configuration The V720-CD1D has a built-in serial interface conforming to RS-232C, thus making it possible to communicate with personal computers and PLCs. The host issues all commands to process usual communications data. 1-2-1 Example of 1-to-1 System Configuration Host Desktop Personal Computer Notebook Personal Computer...
  • Page 17 Note The RS-232C interface does not support 1-to-N connections. Therefore, it is necessary to employ appropriate interfaces for data conversion, such as an RS-232C to RS-485 Converter. Use OMRON’s RS-232C to RS-485 Converters or equivalent models. If connecting a 2-wire system between the Controller and the host using an RS-232C to RS-485 Converter, switch the host to receive within 5 ms after sending a command to the Controller.

  • Page 18: Outline Of Operation

    Outline of Operation Section 1-3 Outline of Operation The following provides the outline of the operation of the RFID System using an example that sorts items of container each attached with a Tag. Host Desktop Personal Computer Notebook Personal Computer READ Command Response Processing...

  • Page 19: Specifications And Performance

    SECTION 2 Specifications and Performance This section provides the specifications and performance characteristics of the ID Controller. 2-1 ID Controller ..........................2-1-1 Nomenclature........................ 2-1-2 Specifications........................ 2-1-3 Dimensions ........................2-2 Cable ............................2-2-1 Specifications........................ 2-2-2 Dimensions ........................2-3 V720 Communications Specifications ..................2-4 External Communications Specifications..................

  • Page 20: Id Controller

    ID Controller Section 2-1 ID Controller 2-1-1 Nomenclature V720-CD1D 1 Rotary Switches 2 DIP Switches 3 Indicators 4 Cover 5 Antenna Port 6 RS-232C Port 7 Power Supply Terminals 8 External Input Terminals 9 RESET Terminals V720-CD2D 1 Rotary Switches V 7 2 0 - C D 2 D 2 DIP Switches ID CONTROLLER...
  • Page 21 ID Controller Section 2-1 Refer to all sections from Section 3 onwards for the functions of the Controller in detail. Refer to Section 4 Setting, Mounting and Connection Methods for the settings and connections of the Controller. Name Function Description Rotary switches Used for node The node number is used to identify each Controller when a single...
  • Page 22 ID Controller Section 2-1 2-1-2 Specifications 2-1-2-1 General Specifications Item Specification +10% Supply voltage 24 VDC -15% Power consumption 20 W max. including the power consumption of the Antenna (1.1 A at 12 V) Insulation resistance 20 MW min. (at 100 VDC) between the ground and both power supply terminals, both power supply terminals and both I/O terminals, both power supply terminals and casing, both I/O terminals and ground, both I/O terminals and casing, and ground terminal and casing.
  • Page 23 ID Controller Section 2-1 2-1-2-3 I/O Specifications +10% Input voltage 24 VDC (including ripples) External Input and RESET Input -15% (IN1 and IN2) Input impedance 2.2 kW Input current 10 mA TYP (24 VDC) ON voltage 19 V min. OFF voltage 5 V max.
  • Page 24 ID Controller Section 2-1 2-1-2-4 Wiring Example V720-H01-E Read Write Antenna Host PLC V720-CD1D V700-A4□ ID Controller Antenna Cable V 7 2 0 - C D 1 D ID CONTROLLER 24VDC 20W COMM NORM ANTENNA RS-232C RS-232C + SYNC Ð 24VDC 24-VDC power supply MADE IN JAPAN...
  • Page 25 ID Controller Section 2-1 2-1-3 Dimensions V 7 2 0 - C D 1 D ID CONTROLLER 100±0.2 35.5 2- 4.5 Two, 4.5 dia. 56±0.2 100±0.2 56±0.2 2-M4 Two, M4 Casing material: PC/ASA resin...

  • Page 26: Cable

    Cable Section 2-2 Cable 2-2-1 Specifications Item V700-A4o Number of conductors Insulation resistance 5 MW min. (at 500 VDC) between conductor and shield Dielectric strength 500 VAC 1 min Maximum operating temperature 80°C Remarks Connectors are not water resistant. 2-2-2 Dimensions V700-A4 o Item V700-A40...

  • Page 27: V720 Communications Specifications

    Cable length 15 m max. Suitable connector D-sub 9-pin male connector OMRON XM2A-0901 Plug and XM2S-0911 Hood provided with the Controller Recommended cable Hitachi Cable CO-MA-VV-SB 5Px28AWG Note Make the settings using the DIP switches on the Controller. Refer to Section 4 Setting, Mounting, and Connection Methods for details.

  • Page 28: External Communications Specifications

    The chips contain 64 bytes of memory. The system area, which is used for functions other than user memory, consists of the uppermost 5 blocks (blocks 0 to 4). With the OMRON system, the system area can accessed easily using special commands. Refer to 5-3-6 System Commands and Responses for details.

  • Page 29: Functions

    SECTION 3 Functions This section provides the modes and functions in detail. Single, FIFO, Multiple, and Selective Access Functions ............. Memory Check Function...................... Lock Function........................Distinguished Tag Read/Write Function................External Input Function......................Offline Read Test Function....................

  • Page 30: Single, Fifo, Multiple, And Selective Access Functions

    Single, FIFO, Multiple, and Selective Access Functions Section 3-1 Single, FIFO, Multiple, and Selective Access Functions Four communication modes are available depending on the number or state of Tags in the communication area. Commands can be used for selecting one of them. Refer to Section 5 Communications Functions for details. Single Access Mode In this mode, only a single Tag can be in the communications area, otherwise a communications error will result.
  • Page 31 Single, FIFO, Multiple, and Selective Access Functions Section 3-1 Multiple Access Mode This function is also called 1:N access or multiple Tag simultaneous access. In this mode, communications with multiple Tags in the communications area will be possible. Set the maximum number of Tags (number of timeslots) within the communications area (hereafter called the Tag number setting) using a command.

  • Page 32: Memory Check Function

    Memory Check Function Section 3-2 Memory Check Function By adding a check code to the data in the Tag, you can detect data errors due to the Tag memory (EEPROM) being overwritten, service life, and unforeseen factors. The check code uses the CRC code of the generating polynomial X + 1.

  • Page 33: Lock Function

    Lock setting area 1 byte 1 byte Note: With the Lock function used in the V720 Series, you cannot turn OFF the lock settings. Data cannot be written twice to pages that are write-protected, so be careful when using the function.

  • Page 34: Distinguished Tag Read/Write Function

    Distinguished Tag Read/Write Function Section 3-4 Distinguished Tag Read/Write Function The V720-series Tag has two Tag classification codes: Family code and application ID. Each code consists of 1 byte of data. Communications can be limited to Tags that match the two codes. This is called the Distinguished Tag Read/Write Function.

  • Page 35: External Input Function

    External Input Function Section 3-5 External Input Function There are two external user input terminals that can be controlled by commands. These can be used to design sequence operations, such as starting or stopping communications with Tags using external triggers.

  • Page 36: Offline Read Test Function

    Offline Read Test Function Section 3-6 Offline Read Test Function Communications tests between the Antenna connected to the Controller and Tags can be performed without any connections to a host. This function can be used to check the Antenna mounting location before trial operation. The function is enabled by turning ON DIP switch pin 3-3 on the Controller before turning ON the power supply.

  • Page 37: Setting, Mounting, And Connection Methods

    SECTION 4 Setting, Mounting, and Connection Methods This section provides installation information for the ID Controller. 4-1 Switch Settings.......................... 4-1-1 Opening the Cover ......................4-1-2 Settings ......................... 4-1-3 Default Set Values......................4-1-4 Rotary Switch Settings....................4-1-5 DIP Switch Settings ...................... 4-2 Installation Environment ......................

  • Page 38: Switch Settings

    Switch Settings Section 4-1 Switch Settings Open the cover of the Controller to make switch settings. 4-1-1 Opening the Cover A screwdriver is provided with the Controller. Open the cover by inserting the screwdriver into the groove on the left side of the cover. Under the cover, there are two Rotary switches (SW1 and SW2), and two DIP switches (SW3 and SW4).
  • Page 39 Switch Settings Section 4-1 4-1-2 Settings Use the provided screwdriver to make switch settings as shown below. 4-1-3 Default Set Values The following table shows default set values. Name Default set Meaning value Node number Node number 0 RESERVED Not used SW3-1 Tag Communication speed Standard mode...
  • Page 40 Switch Settings Section 4-1 4-1-4 Rotary Switch Settings If more than one Controller is connected to a single host through Link Node Number Adapters, each Controller needs an ID number so that the host can discriminate between each of them. Such an ID number is called node number.
  • Page 41 Switch Settings Section 4-1 4-1-5 DIP Switch Settings Pin 1: Tag communication speed Pin 1 is used to set the speed of communications with Tags. When this pin is set to Standard Mode, a longer communications distance can be used, but communications will be slower.
  • Page 42 Switch Settings Section 4-1 Pin 8: BCC Setting Pin 8 is used to set the BCC for command frames and response frames to enabled or disabled (i.e., whether or not BCC is sent and received). Pin 8 Description BCC disable BCC enable...
  • Page 43 Switch Settings Section 4-1 Pins 1 and 2: Baud Rate Setting Pin 1 Pin 2 Description 115,200 bps 19,200 bps 9,600 bps 38,400 bps Pin 3: Data Length Setting Pin 3 Description 8 bits (JIS 8 bits) 7 bits (ASCII 7 bits) Pins 4 and 5: Parity Bit Setting Pin 4 Pin 5...

  • Page 44: Installation Environment

    Installation Environment Section 4-2 Installation Environment Installation The V720-CD1D Controller is a highly reliable control device withstanding tough environments. In order to ensure the full, reliable performance of the RFID system, however, observe the following. Do not install the Controller under the following conditions. ·...

  • Page 45: Mounting

    (1) Hook the Controller to part A. Then press the Controller in direction B to mount the Controller DIN track (1m long) (2) Pull the mounting hook downwards, then lift OMRON PFP-100N2 is the Controller upwards to disconnect the recommended. Controller. Height: 80 mm max.

  • Page 46: Connection And Disconnection Of Antenna Connector

    Connection and Disconnection of Antenna Connector Section 4-4 Connection and Disconnection of Antenna Connector A single Antenna can be connected to the Controller through the V700-A4 □ Antenna Cable (sold separately), the standard length of which is 30 m maximum. Connection of Antenna Connector Connection Cable connector...

  • Page 47: Wiring

    Wiring Section 4-5 Wiring Wire the Controller as shown below. 4-5-1 Power Supply and Ground Wires V720-CD1D Connection example Line filter +24 VDC Ferrite core (provided) Ground at a resistance 100 W of less than 100Ω The power supply and ground terminals use M3 set screws. The following type of solderless terminals can be connected to these terminals.
  • Page 48 The Controller can internally withstand the noise on the power line. By providing power to the Controller through the noise filter, the noise between the Controller and ground can be greatly reduced. Recommended Compact DC Power Supply (OMRON) Model Output...
  • Page 49 Wiring Section 4-5 • Use the provided ferrite core for the suppression of noise generation as shown below. 1, 2, 3... 1.Wire the power supply and ground wires. 2.Wind the power supply and ground wires together around the ferrite core once so that the ferrite core will not move as shown below.
  • Page 50 Wiring Section 4-4 4-5-2 Wiring RESET Signal and External Input Signal IN1 IN2 RESET 24 VDC 24 VDC input input I/O Solderless Terminal The I/O terminals use M3 set screws. The following type of solderless terminal can be connected to these terminals. 6.5 max.
  • Page 51 Connection of RS-232C Interface (V720-CD1D) Section 4-6 Connection of RS-232C Interface (V720-CD1D) Signal name Symbol Signal direction Pin number Input Output Maintenance ground ––– ––– Shield Signal ground or common ––– ––– retrace line Send data ––– Receive data ––– Request to send –––...
  • Page 52 Cables with connectors 9-pin male Shield shielded wire Assembly and Connection of Communications Connector An OMRON communications connector conforming to EMI standards is provided with the Controller. Use this communications connector or an equivalent one. Host computer end ID Controller end...
  • Page 53 Connection of RS-232C Interface (V720-CD1D) Section 4-6 Assembly of Connector 1, 2, 3... 1.Process the end of the cable as shown below. Conductors Braided shield Cable bushing Shield tape • Insert the cable into the cable bushing. • Untangle the braided shield for approximately 10 mm and fold it back on the cable bushing.
  • Page 54 Connection of RS-232C Interface (V720-CD1D)Connection Section 4-6 Connection and Disconnection of Connector · When connecting the connector, be sure to hold the connector by hand and insert the connector. Then secure the connector with two lock screws. · When disconnecting the connector, completely loosen the two lock screws. Then hold the protruding part of the connector hood by hand and pull the connector straight out.

  • Page 55: Connection Of Rs-485 Interface (V720-Cd2D)

    Connection of RS-485 Interface (V720-CD2D) Section 4-7 Connection of RS-485 Interface (V720-CD2D) Terminal number 1 2 3 4 Terminal number Polarity Note Terminals 1 and 3 and terminals 2 and 4 are connected internally in the RS- 485 Controller. 1-to-N Connection Host device RS-485 Controller 0 With 220- W...
  • Page 56 Connection of RS-485 Interface (V720-CD2D) Section 4-7 Connection Examples Use a shielded cable for connection to the RS-485 interface. Connect the shield line to the ground terminal. 1-to-N Connection Total distance: 300 m max. Terminating Terminating Terminating Terminating resistance disabled resistance disabled resistance disabled resistance enabled...
  • Page 57 Tighten the screws to a proper torque (about 0.5 N • m). OMRON Sells the following screwdriver that is Ideal for this application.
  • Page 58 Connection of RS-485 Interface (V720-CD2D) Section 4-7 3. Install the connector in the Controller. Align the cable’s connector with the Controller’s connector and insert the cable’s connector fully into the Controller. Tighten the retaining screws to a proper torque (about 0.3 N •...

  • Page 59: Communications Functions

    SECTION 5 Communications Functions This section provides the communications functions and provides details on communications-related data and com- mands. 5-1 Command and Response Frame Structure................5-1-1 Command Frame Structure................... 5-1-2 Response Frame Structure .................... 5-1-3 BCC Calculation Method ..................... 5-2 Command List .......................... 5-3 Communications Commands and Responses ................

  • Page 60: Command And Response Frame Structure

    Command and Response Frame Structure Section 5-1 Command and Response Frame Structure 5-1-1 Command Frame Structure The ID Controller continuously receives signals from STX to ETX, and executes the command when the correct node number is received. If, after receiving an STX signal, another STX signal is re- ceived before an ETX signal is received, the second STX signal is given command priority.

  • Page 61: Bcc Calculation Method

    Command and Response Frame Structure Section 5-1 5-1-3 BCC Calculation Method BCC is the result of the horizontal parity calculation of the data right after STX up to ETX inclusive. Refer to JIS5001 Transmission Path Character Configuration and Using Horizontal Parity for details. Command Node No.

  • Page 62: Command List

    Command List Section 5-2 Command List Command Command Description Name Code Read Reads the memory data of a Tag. Write Write data to the memory of a Tag. Write-protects Tag memory by page. Once a page has been write- Lock protected, the write protection cannot be cleared.

  • Page 63: Communications Commands And Responses

    Communications Commands and Responses Section 5-3 Communications Commands and Responses This section shows the settings using BCC (i.e., pin 8 on DIP switch 3 is ON). BCC is not attached to either the command or response frames when using BCC is not set. 5-3-1 Single Access Commands and Responses 1) Read (RD) Command for the use of reading data of an ID Tag.
  • Page 64 Communications Commands and Responses Section 5-3 2) Write (WT) Command for the use of writing data to an ID Tag. Read verification processing is performed for this command and so it is not necessary to per- form it again. Command Frame Structure STX Node No.

  • Page 65: Fifo Access Commands And Responses

    Communications Commands and Responses Section 5-3 5-3-2 FIFO Access Commands and Responses 1) Read (RD) Command for the use of reading data of an ID Tag entering the Antenna area in entering order. Command Frame Structure Node No. Command Commu- Data Fixed First read...
  • Page 66 Communications Commands and Responses Section 5-3 Write (WT) Command for the use of writing data to an ID Tag entering the Antenna area in entering order. Read verification processing is performed for this command and so it is not necessary to perform it again.

  • Page 67: Multiple Access Commands And Responses

    Communications Commands and Responses Section 5-3 5-3-3 Multiple Access Commands and Responses 1) Read (RD) Command for the use of reading plural Tags 　　 Command Frame Structure STX Node No. Command Communi- Data First read No. of read ETX BCC code cations type...
  • Page 68 Communications Commands and Responses Section 5-3 2) Write (WT) Command for the use of writing the same data to plural Tags. Read verification processing is performed for this command and so it is not necessary to per- form it again. 　　...

  • Page 69: Selective Access Commands And Responses

    Communications Commands and Responses Section 5-3 5-3-4 Selective Access Commands and Responses 1) Detection of Tags Command for the use of detecting Tags in communications area. Command Frame Structure Node No. Command Commu- Data First read No. of read ETX BCC code nications type...
  • Page 70 Communications Commands and Responses Section 5-3 2) Read (RD) Command for the use of designating a specific Tag and reading data after detection. Command Frame Structure Node No. Command Commu- Data Fixed First read No. of read ETX BCC code nications type page...
  • Page 71 Communications Commands and Responses Section 5-3 3) Write (WT) Command for the use of designating a specific Tag and writing data after detection. Read verification processing is performed for this command and so it is not necessary to per- form it again. 　　...

  • Page 72: Polling Commands And Responses

    Communications Commands and Responses Section 5-3 5-3-5 Polling Commands and Responses 1) Polling Single Auto Read (PR) Immediately after receiving the Polling Single Auto Read Command, the Controller returns a re- sponse indicating the acceptance of the command and waits for a Tag to enter the communica- tions area of the Antenna.
  • Page 73 Communications Commands and Responses Section 5-3 2) Polling Single Auto Write (PW) Immediately after receiving the Polling Single Auto Write Command, the Controller returns a re- sponse indicating the acceptance of the command and waits for a Tag to enter the communica- tions area of the Antenna.
  • Page 74 Communications Commands and Responses Section 5-3 3) Polling Check (PC) You can check the results while the Polling Single Autoread Command and Polling Single Autowrite Command are being executed. You can use Polling Check after the Polling Single Autoread Command and Polling Single Autowrite Command have been sent. 　　...
  • Page 75 Communications Commands and Responses Section 5-3 4) Polling End (PE) Command for the use of canceling Execution of Polling commands. 　　 Command frame structure Node No. Command ETX BCC code “PE” Response Frame Structure · Response when a Tag is not yet detected Command STX Node No.

  • Page 76: System Commands And Responses

    Communications Commands and Responses Section 5-3 5-3-6 System Commands and Responses 1) Serial Number Read (RD) This command is used for reading a unique 64 bit serial number. 　　 Command frame structure STX Node No. Command Communi- Data Fixed Fixed ETX BCC code cations...
  • Page 77 Communications Commands and Responses Section 5-3 2) Lock (LK) The LK Command is used to set and check the write-protection of Tags. It can be applied to Tag memory in page units. To read lock information set in a Tag, set all lock information in the com- mand to 0.
  • Page 78 Communications Commands and Responses Section 5-3 3) Read of Application ID and Family Code (for Tag) 　 Command Frame Structure STX Node No. Command Communi- Data Fixed Fixed code cations type value value “RD” setting “FF” “01” Communications Specifies a communications method. MT: Multi-trigger ST: Single Trigger MR: Multi-repeat...
  • Page 79 Communications Commands and Responses Section 5-3 4) Write of Application ID and Family code (for Tag) The WT Command is used to write application IDs and family codes to Tags. Read verification processing is performed for this command and so it is not necessary to per- form it again.
  • Page 80 Communications Commands and Responses Section 5-3 Setting of Family Code (for Controller) (FC) The FC Command is used to set or read the family code in the Controller. Only Tags that have the same family code as the one set by this command can perform communications. If the family code in the Controller is set to 00, however, communications will be possible with all the Tags.
  • Page 81 Communications Commands and Responses Section 5-3 7) Setting of EAS (ES) The ES Command is used to enable or disable the EAS Check Command. No response is re- turned for the EAS Check Command (EA) if it is disabled. Command Frame Structure STX Node No.
  • Page 82 Communications Commands and Responses Section 5-3 9) Setting of Quiet Bit (QB) The QB Command is used to set the Quiet Bit. If this bit is enabled, no responses are returned for commands (except the EAS Check Command). Command Frame Structure STX Node No.

  • Page 83: General Commands And Responses

    Communications Commands and Responses Section 5-3 5-3-7 General Commands and Responses 1) Special Read (RD) If there is one Tag within the communications area, data will be read from the Tag at a speed faster than normal reading. 　　 Command Frame Structure STX Node No.
  • Page 84 Communications Commands and Responses Section 5-3 2) Stop (ST) This command causes the Controller in auto mode, repeat mode, FIFO Access, or Selective Access to cancel the processing of communications when this command is received by the Controller. The Controller then waits for the next command. Command Frame Structure Node No.
  • Page 85 Communications Commands and Responses Section 5-3 Test (TS) This command returns test messages sent from the host with no change made. The command is used for testing communications between the host and the Controller. Command Frame Structure STX Node No. Command Test message ETX BCC code...
  • Page 86 Communications Commands and Responses Section 5-3 7) Memory Calculation (MK) This command uses the generating polynomial, X + 1 to calculate the check block designated by a user and to compare the results with the check code attached to the check block.
  • Page 87 Communications Commands and Responses Section 5-3 10) Response to undefined commands This response is returned when the Controller receives an undefined command. Response Frame Structure STX Node No. Command ETX BCC code “IC” 5-29...

  • Page 88: Command Connection

    Command Connection Section 5-4 Command Connection A command connection function allows the Controller to perform both read and write operations at a time by connecting commands from the host with “+”. Any of the following commands can be paired. - Read (RD) - Write (WT) - Polling Single Auto Read (PR) - Polling Single Auto Write (PW)
  • Page 89 Command Connection Section 5-4 The Following Combinations of Command Connections Are Possible Command 1 ü ü ü ü ü Command 2 ü ü ü ü ü ü : able to connect , - : not able to connect Note 1 The communications method specified using command 1 is given priority.

  • Page 90: Communications Methods

    Communications Methods Section 5-5 Communications Methods For communications, settings for access and mode should be made according to the state of Tags in the communications area of the Antenna and their operation after the Tags receive commands. 5-5-1 Access Settings There are the following four access settings according to the number of Tags in the communications area and their states.
  • Page 91 Communications Methods Section 5-5 3) Multiple Access In multiple access, communications with all of Tags existing in the communications area can be carried out. In this case, the Tag No. setting commensurate with the number of Tags within the communications range is set using the commands. Multiple Access Read A communications end response is returned when communications with all Tags within the commu- nications range ends for the Multiple Access Read Command (RD).
  • Page 92 Communications Methods Section 5-5 4) Selective Access (Trigger Mode only on Selective Access) In the selective access trigger function, a selected Tag from among multiple Tags in the commu- nications area of the Antenna is accessed. First, temporary numbers are assigned to the Tags in the communications area.
  • Page 93 Communications Methods Section 5-5 Host Controller 1) The controller receives the Tag Detection command Tag Detection Command (RD) 2) The controller communicates with a Tag (0) Communications processing Tag and stores the temporary No. of the Tag. Save response Tag (1) Communications processing Save response 3) When communications with all the...
  • Page 94 Communications Methods Section 5-5 Exceptions to the Selective Access Trigger Function 1) When the Tags with the temporary numbers selected by the Tag Selection Command are not present, the Controller returns a communications error to the host. 2) When the Tag Selection Command selects temporary numbers other than those stored by the Controller by the Tag Detection Command, the Controller returns a format error to the host.

  • Page 95: Mode Settings

    Communications Methods Section 5-5 5-5-2 Mode Settings There are the following four mode settings according to the state of the Controller and of Tags. 1) Trigger Mode In trigger mode, communications with a stationary Tag in the communications area are carried out.
  • Page 96 Communications Methods Section 5-5 Auto Mode In auto mode, after receiving an Auto command from the host, the Controller waits for a Tag to enter the communications area. Since the Controller is in a busy state between Auto command reception and the completion of communications with the Tag, it does not accept any com- mands other than the Stop or Reset Command during the period.
  • Page 97 Communications Methods Section 5-5 3) Repeat Mode In repeat mode, every time an Tag enters the communications area, the Controller communi- cates with the Tag and returns a response. It is not until communications are stopped by the Stop or Reset command that the Controller accepts the next command. Host Controller Repeat...
  • Page 98 Communications Methods Section 5-5 Polling Auto Mode If an Auto command is used when a single host controls more than one Controllers, the com- munications path between the host and one of the Controllers to which the command is sent becomes busy, disabling the host to control other Controllers.

  • Page 99: Table Of Communications Methods

    Communications Methods Section 5-5 5-5-3 Table of Communications Methods Name Code Description Immediately after receiving a command, the Controller communicates Single Trigger with a Tag and returns a response. If the Tag is missing, an error is re- turned. During communications, only one Tag exists in the communica- tions area of the Antenna.

  • Page 100: Table Of Communications Methods For Commands

    Communications Methods Section 5-5 5-5-4 Table of Communications Methods for Commands Communications Method Single FIFO Multi Selective Command Fast Tag detec- Tag speci- read Trigger Auto Repeat Trigger Auto Repeat Trigger Repeat tion fication ü ü ü ü ü ü ü...

  • Page 101: Data Type

    Data Type Section 5-6 Data Type Specify using the commands whether read/write data is to be handled as ASCII (or JIS8 code) character data, or as hexadecimal numerical data. Name Code Description A character of data occupies 1 byte (1 address) on a Tag as an ASCII code ASCII data or a JIS 8 code.

  • Page 102: Tag Number Setting

    Tag Number Setting Section 5-7 Tag Number Setting The timeslot setting is the setting in the command frame when communicating with multiple Tags simultaneously using Multi-system commands. Max. No. of Tags with which simultaneous Tag Number Setting communication is possible Example: If the number of Tags is seven, select Tag Number setting 3.

  • Page 103: Communications Phase

    Communications Phase Section 5-8 Communications Phase The following commands and responses can be made by specifying different command communi- cations settings. No Response When the Controller receives the Reset Command, it is reset without returning a response and waits for the next command. Command Host Reset...

  • Page 104: Ack/Nack Control

    ACK/NACK Control Section 5-9 ACK/NACK Control 5-9-1 Error Handling in ACK/NACK Control When using ACK/NACK control, if the host does not receive a normal response, the Controller will resend the response by either (1) when the host sends a NACK command to the Controller or (2) when there is no response within a set period of time.

  • Page 105: Response Code List

    Response Code List Section 5-10 5-10 Response Code List Response codes in response frames are shown below. Res- Type ponse Name Description code Normal end Normal end The received command ends normally with no error. Multi-processing end Communications end response when a multi-trigger function is used Selective detection Communications end response when a selective ac-...

  • Page 106: Startup And Full Operation

    SECTION 6 Startup and Full Operation This section provides information on trial operation, errors and remedies, and maintenance and troubleshooting. Trial Operation ........................Self-diagnostic Function....................... Errors and Remedies......................Maintenance and Inspection ....................Troubleshooting........................

  • Page 107: Trial Operation

    Trial Operation Section 6-1 Trial Operation Check Items Check the following on the RFID System before the trial operation of the whole system. Items Detail Section · Are the power supply and I/O lines properly wired? Power supply and I/O lines ·...

  • Page 108: Self-Diagnostic Function

    Self-diagnostic Function Section 6-2 Self-diagnostic Function The Controller has a self-diagnostic function to check a variety of items in order to reduce the downtime of the system that may result due to operational failures. Details of Errors Errors detected by the Controller can be classified into “fatal errors” and “nonfatal errors.”...

  • Page 109: Errors And Remedies

    · When operating more than one V720-series More than one V720-series Antenna Antenna, provide a sufficient clearance between the Antennas. Refer to V720 series Antenna, Tag Manual for details. Improvement in Grounding Countermeasures Against Noise on Power Line Other Other...

  • Page 110: Maintenance And Inspection

    Section 6-4 Maintenance and Inspection The V720 Series must be inspected on a daily or regular basis so that the functions of the V720 Series can be used in good condition. The V720 Series consists of semiconductors that last almost indefinitely. The following malfunctions may, however, result due to the operating environment and conditions.
  • Page 111 Maintenance and Inspection Section 6-4 n Inspection Items Item Detail Criteria Remarks (1) Check that the supply voltage Supply voltage fluctuation Supply voltage rating Voltage fluctuation at the power supply tester terminal block is within the permissible range. (2) Check that there is no frequent Within permissible voltage fluctuation Power supply instantaneous power failures...

  • Page 112: Troubleshooting

    Troubleshooting Section 6-5 Troubleshooting Main Check Flowchart If an error results, fully check the whole situation, determine the relationship between the system and any other device, and refer to the following flowcharts for troubleshooting. Use the following main check flowchart to determine the cause of the error. Main check flowchart Go to the system connections Are all devices in the system...
  • Page 113 Troubleshooting Section 6-5 System Connections Check Flowchart Start Are the connected connectors and cables OK? Connect normally. Turn power ON. Is the ERROR Replace the Controller. indicator flashing? Is the RUN indicator ON? Is the rated voltage provided? Provide the rated voltage. Is RESET input ON? Turn RESET input OFF.
  • Page 114 Troubleshooting Section 6-5 Host Communications Check Flowchart Start Start the TS command from the host. Is the response normal? Is the communications frame OK? Revise the communications frame correctly. Are the communications cable connectors wired OK? Wire the connectors correctly. Is the host working normally? Revise the host program...
  • Page 115 Troubleshooting Section 6-5 Communications Check Flowchart Start Turn ON the Controller and connect the host. Send the WRITE command in single auto mode. Does the COMM indicator go from ON to OFF? Is the moving Is the direction Is the ambient Is the End code 70? speed of Tag...
  • Page 116 Troubleshooting Section 6-5 Operating Environment Check Flowchart Start Refer to 6-4 Maintenance Are the operating conditions OK? and Inspection. Refer to 6-3 Errors and Is the ambient noise OK? Remedies. 6-11...

  • Page 117: Reference Data

    SECTION 7 Reference Data This section provides reference data relating to V720 communications. Communications Time......................7-2...

  • Page 118: Communications Time

    Communications Time Section 7-1 Communications Time The V720-series Controller reads or writes four-byte data per page. · The following chart specifies the TAT (turn-around time) and actual communications time. · The actual communications time in the following chart is the time required for communications between the Antenna and Tag, not including communications with the host.
  • Page 119 Communications Time Section 7-1 Fast mode Actual communications Writing time (ms) Writing Normal reading Normal reading Special reading Special reading Number of pages processed Number of pages processed Calculation Formula Operation Actual communications time (ms) Special reading T = 1.3N + 6.2 Normal reading T = 1.3N + 12.7 Writing...

  • Page 120: Appendix

    Appendix A JIS 8 Code List (ASCII List) Higher digits Lower digits Column Note 1. The code at the 5th row, 12th column is “ ･ ” in ASCII code. 2. Do not use the undefined areas.

  • Page 121: Revision History

    Revision History A manual revision code appears as a suffix to the catalog number on the front cover of the manual. Cat. No. S908-E1-2 Revision code The following table outlines the changes made to the manual during each revision. Page numbers refer to the previous version.
  • Page 122 Chao Yang District, Beijing 100022 China Tel: (86)10-6515-5778 to 5782 Fax: (86)10-6515-5801 to 5802 Up-to-date information on RFID Systems can be accessed at OMRON's web site at http://www.omron.com/card/rfid/ Authorized Distributor: Cat. No. S908-E1-2 Note: Specifications subject to change without notice.

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