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YOKOGAWA VZ20X User Manual

YOKOGAWA VZ20X User Manual

Analog sensing unit
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User's
Manual
VZ20X
Analog Sensing Unit
User's Manual
IM 77V01B01-01EN
IM 77V01B01-01EN
5th Edition

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Summary of Contents for YOKOGAWA VZ20X

  • Page 1 User’s Manual VZ20X Analog Sensing Unit User’s Manual IM 77V01B01-01EN IM 77V01B01-01EN 5th Edition...

  • Page 2: Introduction

    Introduction Thank you for purchasing the VZ20X Analog Sensing Unit (simply referred to as "VZ20X" from here on). This manual describes how to use the VZ20X. Be sure to read this manual before using the product in order to ensure correct operation.
  • Page 3 Precaution on the Use of This Product (IM 77V01B01-11Z1) .. x1 ・ The nameplate is located on the case side of the VZ20X body. Check that the product that you received is what you ordered by referring to the model name and suffix code given on the nameplate.
  • Page 4 ■ Authorised Representative in the EEA and the Importer into the EU/EEA Market The Authorised Representative for this product in the EEA and the importer for this product into the EU/EEA market via Yokogawa sale channel is: Yokogawa Europe B.V. Euroweg 2, 3825 HD Amersfoort,The Netherlands *: Support for VZ20X style 2.01 and later.
  • Page 5 The influence rate (performance criterion A) in the immunity test environment is within ± 5 % of the voltage or resistance range. *: Support for VZ20X style 2.01 and later. For the protection and safe use of the product and the system in which this product is incorporated, be sure to follow the instructions and precautions on safety that are stated in this manual whenever you handle the product.
  • Page 6 Be sure to use the spare parts approved by YOKOGAWA when replacing parts or ・ consumables.
  • Page 7 • Do not allow conductive wiring scraps, chips, or the like to enter inside the product. This causes electric shock, fire, failure, or malfunction. Also, note that wiring scraps and chips easily enter the product during wiring when the VZ20X is turned face up.
  • Page 8 YOKOGAWA makes no warranties regarding the product except those stated in the ・ WARRANTY that is provided separately. The product is provided on an "as is" basis. YOKOGAWA assumes no liability to ・ any person or entity for any loss or damage, direct or indirect, arising from the use of the product or from any unpredictable defect of the product.
  • Page 9 ■ Disposal of the Product When disposing of the product, appropriately dispose of the product as industrial waste in accordance with regional and local government regulations. All Rights Reserved Copyright © 2021, Yokogawa Electric Corporation IM 77V01B01-01EN 5th Edition: 2023.03.07-00...
  • Page 10 This product complies with the WEEE marking requirement. This marking indicates that you must not discard this electrical/electronic product in domestic household waste. When disposing of products in the EEA or UK, contact your local Yokogawa office in the EEA or UK respectively.
  • Page 11 Yokogawa or any of its licensors. Copyright, trademark and any other intellectual property rights in and ownership of the Software Product shall be retained by Yokogawa or any of its licensors and none of the rights will be transferred to Licensee hereunder.
  • Page 12 2.6 The Software Product may contain software which Yokogawa is granted a right to sublicense or distribute by third party suppliers (“Third Party Software”). If suppliers of the Third Party Software (“Supplier”) provide special terms and conditions for the Third Party Software which differ from this Agreement, the special terms and conditions shall prevail over this Agreement.
  • Page 13 8. Audit; Withholding 8.1 Yokogawa shall have the right to access and audit Licensee’s facilities and any of Licensee’s records, including data stored on computers, in relation to the use of the Software Product as may be reasonably necessary to verify that the requirements of this Agreement are being met.

  • Page 14: Table Of Contents

    Exiting VZ Configurator ..............5-6 5.3.3 Home Screen ..................5-7 Setup Guide ......................5-8 5.4.1 Making New VZ20X Settings and Changing VZ20X Settings .... 5-8 5.4.2 Changing Settings from the Configuration File ........5-8 Connection Settings ................... 5-9 Editing and Applying Settings ................5-12 5.6.1...
  • Page 15 Contents 2 5.10 Software Settings ....................5-22 5.10.1 Software Version ................5-22 5.10.2 Language Setting ................5-23 5.11 Help ........................5-24 VZ Configurator Operations ..............6-1 Monitoring ......................6-1 6.1.1 Display Content .................. 6-1 Explanation of Functions ................. 7-1 Measurement ...................... 7-1 7.1.1 Input Type ...................
  • Page 16 Contents 3 Revision Information ....................1 IM 77V01B01-01EN 5th Edition: 2023.03.07-00...
  • Page 17 Contents 4 Blank Page IM 77V01B01-01EN 5th Edition: 2023.03.07-00...

  • Page 18: Outline

    The following describes the system configuration of the VZ20X. ● Ethernet communication The VZ20X can be used when connected to a host device such as PC/PLC, etc. Data can be acquired in a daisy chain connection regardless of the time synchronization can be connected in a daisy chain connection.

  • Page 19: Specifications

    The figure below shows an example of VZ20X's connected in a single straight line to a hub. ● USB communication The VZ20X can be used when connected to a host device such as PC/PLC, etc. The VZ20X is connected to a PC by USB cable. The parameter settings, monitoring and input adjustment can be made by VZ Configurator.

  • Page 20: Basic Functions

    Analog input CH ● Communication The VZ20X has two Ethernet ports. These are used for connecting to a host device such as PC/PLC, etc which perform data acquisition and for connecting multiple VZ20X's. Multiple VZ20X's can also be connected without the need to use a general-purpose Ethernet hub.

  • Page 21: Names Of Parts

    Figure 8 insulated analog inputs. The measuring method is simultaneous measurement. 8 points can be measured simultaneously on a single VZ20X Analog input terminals unit, and simultaneous measurement on up to 120 channels is possible when multiple units* are connected.

  • Page 22: Operating Procedure

    Wire the equipment in keeping with the operating Step 1 Wire the equipment environment. Refer to User's Manual Chapter 4. Set up the VZ20X in VZ Make the various settings in VZ Configurator. Step 2 Configurator Refer to User's Manual Chapter 5.
  • Page 23 Blank Page IM 77V01B01-01EN 5th Edition: 2023.03.07-00...

  • Page 24: Installation

    Use the VZ20X in a non-condensation state. Note Condensation sometimes forms on the VZ20X when it is moved from a low temperature and humidity site to a high temperature and humidity site, or when temperature changes suddenly. This may also result in a measurement error when thermocouple input is measured.
  • Page 25 In Direct Sunlight or Near Heat Sources ・ Install the VZ20X in a place that is near room temperature (23°C) and that is not subject to large temperature fluctuations. Placing the VZ20X in direct sunlight or near heat sources can cause adverse effects on the internal circuitry.
  • Page 26 Ensure sufficient space above the VZ20X to allow heat to dissipate. Also, if there is ・ a base plate under the VZ20X when it is mounted on a DIN rail, ensure that there is at least 50 mm between the VZ20X and the base plate.
  • Page 27 Prize it downwards until you hear a clicking sound. The lever is secured at this position. In this state, pull the VZ20X towards you and lift up its body to remove the VZ20X from the DIN rail. Rear of VZ20X...
  • Page 28 ■ External dimensions Unit: mm Third angle projection Normal tolerance = ± (value of JIS B 0401-2016 tolerance class IT18) / 2 IM 77V01B01-01EN 5th Edition: 2023.03.07-00...
  • Page 29 Blank Page IM 77V01B01-01EN 5th Edition: 2023.03.07-00...

  • Page 30: Wiring

    Also, note that wiring scraps and chips easily enter the product during wiring when the VZ20X is turned face up. Do not apply voltages that exceed the ratings below to the input terminals. Otherwise, ・...
  • Page 31 CAUTION Wire in an environment having an ambient temperature of -5°C or more. ・ When connecting both the power terminal and USB cable to VZ20X, first supply ・ power from the power terminal and then connect the USB cable. Power is supplied from both the power terminal and USB cable. For this reason, ・...
  • Page 32 0.2 to 0.5 mm² (AWG24 to 20) Ethernet communication 100BASE-TX (Category 5e or higher recommended) VZ20X side USB connector shape: Type-C USB communication Connection cable: Use a USB cable of USB 2.0 or higher. If twin ferrule terminals are not used when the power supply is transition-wired, the cable used is 0.2 to 0.5 mm²...
  • Page 33 ■ Wiring Method WARNING Cautions when wiring Wire so that the indentation shape on the ferrule terminal caused by the crimping tool comes to the opposite side of the white release button on the terminal block, as shown in the figure below. Position of indentations caused by crimping tool Cautions when attaching twin ferrule terminals...
  • Page 34 Turn the power supply off. Wire the power wire and signal wire to the terminals on the VZ20X. Wiring of push-in terminals Removal...
  • Page 35 ■ Wiring inputs Terminal diagram Channel wiring diagrams Wiring 1: DC voltage/Standard signal Wiring 2: Thermocouple Wiring 4: 4-wire resistance temperature detector/4- Wiring 3: 3-wire resistance temperature detector wire resistance Terminal Layout Analog input channels 3-wire 4-wire resistance Voltage/Standard resistance temperature Terminal No.
  • Page 36 Connection cable: Use USB2.0 or higher cables. VZ20X can be set up in VZ Configurator. Power can also be supplied to VZ20X from the USB port. Functional limitations differ according to the USB Type on the power supply source. There are no functional limitations on a Type-C.
  • Page 37 CAUTION When connecting both the power terminal and USB cable to VZ20X, first supply ・ power from the power terminal and then connect the USB cable. Power is supplied from both the power terminal and USB cable. For this reason, ・...
  • Page 38 Use port 1. ● When used in a daisy chain connection: Connect the host device (PC/PLC) side of the cable to port 1, and the VZ20X on the slave side to port 2. Example: Connection of port on 2nd unit when a total of three units are connected in a...
  • Page 39 4-10 The following shows an example of a daisy chain connection. The following shows an example of a connection via an Ethernet hub. IM 77V01B01-01EN 5th Edition: 2023.03.07-00...
  • Page 40 ・ power supply can be used for temporary purposes. CAUTION When connecting both the power terminal and USB cable to VZ20X, first supply ・ power from the power terminal and then connect the USB cable. Power is supplied from both the power terminal and USB cable. For this reason, ・...
  • Page 41 4-12 ● Wiring Method Turn the power supply source of the VZ20X off. Connect the power cable to the power supply terminal. ＋ ー Power supply terminal layout Function 24 VDC power supply (+) 24 VDC power supply (-) (Use forbidden)

  • Page 42: Setting Up Vz Configurator

    Configurator from the following URL. URL: https://www.yokogawa.com/ns/vz/ Outline of VZ Configurator The VZ Configurator software is for setting up VZ20X parameters and for performing monitoring, fault diagnosis and other operations on a PC. VZ Configurator is connected to the VZ20X by Ethernet or USB.
  • Page 43 Checking installation of VZ Configurator ・ For Windows 10 Check that VZ Configurator is registered by [Start] - Apps - [Yokogawa Electric Corporation] - [VZConfig] in the Windows menu. For Windows 11 Check that VZ Configurator is registered by [Start] - [All apps] - [VZConfig] in the Windows menu.
  • Page 44 *1: Ethernet connection: Begin with a new connection as communication is turned off. USB connection: Begin with a new connection as communication is turned off when communication related parameters have been changed. *2: VZ20X reboots. Begin with a new connection as communication is turned off. IM 77V01B01-01EN 5th Edition: 2023.03.07-00...
  • Page 45 ■ Screen hierarchy The following shows the hierarchy of the screens that expand from the home screen. Screens can expand from the home screen to each respective item after connection operation is completed. IM 77V01B01-01EN 5th Edition: 2023.03.07-00...

  • Page 46: Preparing To Use Vz Configurator

    5.2.1 Connecting the Hardware PC (USB connection) ・ Connect the VZ20X to the PC by USB cable. The connector on the VZ20X is a Type-C connector. PC (Ethernet connection) ・ Connect the Ethernet cable from the network to the Ethernet port on the VZ20X. To connect the VZ20X to Ethernet, the VZ20X must be set up to match the network environment.

  • Page 47: Starting Up And Exiting Vz Configurator

    Windows Start menu ・ For Windows 10 Click [Start] → Apps → [Yokogawa Electric Corporation] → [VZConfig] in the Windows menu on the PC to start up VZ Configurator. For Windows 11 Click [Start] → [All apps] → [VZConfig] in the Windows menu on the PC to start up VZ Configurator.

  • Page 48: Home Screen

    Connected device This determines the connection destination of the PC and VZ20X. settings start button The serial number of the VZ20X and tag names are displayed here. Connected device display When VZ Configurator is not connected to the VZ20X, "Disconnected" is displayed.

  • Page 49: Setup Guide

    5.4.1 Making New VZ20X Settings and Changing VZ20X Settings After connecting the VZ20X to the PC by Ethernet or USB, start up VZ Configurator and make the settings for the VZ20X in the following sequence. Connection settings (see 5.5) Editing from the settings screen (see 5.6.1) Communication settings (see 5.7.1)

  • Page 50: Connection Settings

    In the case of an Ethernet connection, both direct input and the Search function are available. The Search function allows you to search for VZ20X's on the same network. In the case of a USB connection, though, only direct input is available.
  • Page 51 To return to the home screen without saving the parameter settings, click the [Cancel] button. The setting values of all parameters on the connected VZ20X are read, and are then reflected in the setting display. ● Search procedure (for Ethernet communication) Click the [New connection] button on the home screen, and the Connection settings window is displayed.
  • Page 52 5-11 From the search results list, click the VZ20X to set the parameters to and click the [Connect] button. To return to the home screen without saving the connection settings, click the [Cancel] button. Enter the user ID and password, and click the [Connect] button. This determines the VZ20X to connect to.

  • Page 53: Editing And Applying Settings

    5.6.1 Editing from the Settings Screen When the connection with VZ20X has been set, edit the parameter settings by following the procedure below. Procedure In the operation list in the home screen, click the respective setting item (communication, time synchronization, analog input) in Settings.
  • Page 54 5-13 The mode changes to the Edit mode, and the setting values of each parameter can be changed. After changing setting values, click the [Apply] button. Clicking the [Cancel] button while settings are being changing exits the Edit mode and the screen returns to the home screen without saving the settings.
  • Page 55 5-14 The new parameter setting values are written to the VZ20X at the connection destination. After the new parameter setting values are written, all parameters are read from the VZ20X at the connection destination. If there is a difference between the parameters that were written back and the parameters that were read, the parameter name and setting value are displayed underlined in red, and "Communication error"...

  • Page 56: Editing Settings From The Save And Apply Screen

    5-15 5.6.2 Editing Settings from the Save and apply Screen When the connection with VZ20X has been set, edit the parameter settings by following the procedure below. Procedure In the operation list in the home screen, click Save and apply settings, and the [Select file] button.

  • Page 57: Settings Screen

    5-16 Settings Screen The various settings for the VZ20X can be made in the Settings screen. Three setting items are set: communication, time synchronization and analog inputs. Note After applying data currently being edited to the VZ20X, save the data by ｢Save and apply settings｣, as necessary.

  • Page 58: Time Synchronization Settings

    [Select file] from Save and apply settings . After inputting the setting values, click the [Apply] button to execute writing of setting values to the VZ20X at the connection destination. Clicking the [Cancel] button discards the new setting values and exits the Edit mode, and the screen returns to the home screen.

  • Page 59: Analog Input Settings

    Select the desired channel to set analog inputs to. After inputting the setting values, click the [Apply] button to execute writing of setting values to the VZ20X at the connection destination. Clicking the [Cancel] button discards the new setting values and exits the Edit mode, and the screen returns to the home screen.

  • Page 60: Managing Files

    5-19 Managing Files Settings can be saved to configuration files, and settings can be written back to VZ20X from configuration files. The format of a configuration file is "******.vza" (where, ****** is the file name). 5.8.1 Saving Settings File ● Procedure Click Save and apply settings >...

  • Page 61: Id And Password Functions

    5-20 ID and Password Functions The VZ20X has a function for setting passwords to restrict reading and writing of setting values. Using this function allows only specific users who know the user ID and password to access settings on the VZ20X.
  • Page 62 VZ20X, the connection is made to the VZ20X at the connection destination. If they do not match, the connection to the VZ20X cannot be made. Try connecting again. Note The user ID and password already set to the VZ20X can be changed at Settings > Communication. IM 77V01B01-01EN 5th Edition: 2023.03.07-00...

  • Page 63: Software Settings

    5-22 5.10 Software Settings 5.10.1 Software Version Display the version of VZ Configurator. ● Software version checking procedure Click [Software settings] at the top of the screen. The version of VZ Configurator is displayed. IM 77V01B01-01EN 5th Edition: 2023.03.07-00...

  • Page 64: Language Setting

    5-23 5.10.2 Language Setting The display language on VZ Configurator can be switched between English and Japanese. ● Display language switching procedure At the top of the screen, click [Software settings] > Language, and then select and click "English " or "日本語". This switches the display language on VZ Configurator.

  • Page 65: Help

    Rename the User's Manual acquired from the website to "IM.pdf", and place the file ・ in the following folder: C:\Users\<UserName>\Documents\VZConfig\IM.pdf ● User’s Manual display procedure Click [?] at the top of the screen. This displays the VZ20X User’s Manual. IM 77V01B01-01EN 5th Edition: 2023.03.07-00...

  • Page 66: Vz Configurator Operations

    VZ Configurator Operations Monitoring Analog inputs to VZ20X can be monitored. 6.1.1 Display Content Once the monitoring screen is opened, analog inputs start to be plotted as a graph. All eight channels of analog inputs are plotted on the same graph. A time range of 10, 60, 300 or 600 seconds can be selected as the X-axis (time axis.) If the time range is...
  • Page 67 ● Monitoring procedure Click Operation list > Monitoring and the following screen appears. Select the display channel to monitor. IM 77V01B01-01EN 5th Edition: 2023.03.07-00...

  • Page 68: Explanation Of Functions

    On the VZ20X, DC voltage, standard signal, resistance, thermocouple, and resistance temperature detector can be measured. Signals input to the VZ20X are sampled at a sampling period of 1 ms, and undergo A/D conversion and various input operations to be converted to the measured values.

  • Page 69: Input Type

    7.1.1 Input Type The following table summarizes the types and ranges of the measurement inputs (DC voltage, standard signal, 4-wire resistance, thermocouple, 3-wire resistance temperature detector and 4-wire resistance temperature detector) to the VZ20X. Measurement range Input type Unit Lower limit value...

  • Page 70: Scaling

    7.1.3 Scaling Scaling can be applied to DC voltage, standard signal or resistor inputs. -270.0℃ 1370.0℃ Input type Input range Min. value of input Range=0.0°C Max. value of input Range=800.0°C Min. value of input Max. value of input Range=1.0000 V Range=5.0000 V Min.

  • Page 71: Burnout Detection

    7.1.5 Burnout Detection UP or DOWN can be selected as the measured value when the burnout error occurs. When a burnout is detected, the measured value becomes 105.0% of the input range when up scale is set and -5.0% of the input range when down scale is set. The burnout operation function is active when the input type is thermocouple, resistance temperature detector and standard signal.

  • Page 72: Power Supply Frequency Noise Removal Filter

    7.1.8 Power Supply Frequency Noise Removal Filter Set the power supply frequency noise removal filter. Parameter Name Setting Range Default Explanation This toggles the power frequency noise removal Power supply frequency OFF, ON noise removal filter filter setting between disabled/enabled. Set the power frequency noise removal filter.

  • Page 73: Moving Average Filter

    7.1.9 Moving Average Filter Set filtering of measured data. Parameter Name Setting Range Default Explanation This toggles the moving average filter Moving average filter OFF, ON setting between use/non-use. Number moving Set the number of times in which the 2 to 100 average cycles moving average is calculated.

  • Page 74: First-Order Lag Filter

    7.1.10 First-order Lag Filter Set filtering of measured data. Parameter Name Setting Range Default Explanation Toggles between use/non-use of the first- First-order lag filter OFF, ON order lag filter. The filter time constant changes according to the data acquisition interval. Filter time constant = data acquisition interval Filter coefficient 1 to 100...

  • Page 75: Synchronization Of Input Sampling

    If thermocouple input is selected, RJC can be turned OFF/ON. Normally, input compensation is performed using the VZ20X RJC function. However, the VZ20X RJC function can be turned OFF in order to use a zero controller or other external device to perform strict compensation.

  • Page 76: Ethernet Communication

    Modbus/TCP. For details on data formats that can be acquired, see "7.2.6 Details of Commands/Responses." Ports have a hub function that allows multiple VZ20X's to be connected. Also, on an Ethernet connection, not only can data be acquired but settings can be made and monitoring can be performed on VZ Configurator.
  • Page 77 Communication is not possible when two VZ20X's having the same IP address exist on ・ the same network. When two or more VZ20X's have been set with the same IP address by mistake, change the IP address settings on VZ Configurator via the USB port.
  • Page 78 7-11 Parameter Name Setting Range Default Explanation Max. 16, 2- or 1-bytes characters (alphanumeric characters, Sets the tag name of the VZ20X. symbols and Chinese character) Max. 1-byte characters User ID USER1 Sets the user ID. (alphanumeric characters and Password USER1 Sets the password.

  • Page 79: Connection Permission Function

    7-12 7.2.2 Connection Permission Function The VZ20X has a connection permission function for permitting accessing from only registered IP addresses or MAC addresses, and for blocking accessing from non- registered IP addresses and MAC addresses. This function prevents unauthorized accessing and heightens security.

  • Page 80: Time Synchronization Function

    7.2.3 Time Synchronization Function The time synchronization function can be used when two or more VZ20X's are connected in a daisy chain configuration. This function enables inputs to be measured on a maximum of 120 channels at the same A/D conversion timing.
  • Page 81 Set the setting value of GA10 setting item "Data time" to "Device time". Other than GA10 (PC/PLC) ・ Write the time of the PC/PLC via Modbus/TCP communication after the VZ20X is started up. Write the time also when the power supply is turned off midway.
  • Page 82 Note To synchronize the time on the PC and PLC The date and time on the VZ20X can be synchronized with the date and time on the PC/PLC by periodically writing the time. The accuracy of the time on the VZ20X is ±5 ppm. To resolve time differences with the PC/PLC, write the time to the VZ20X whenever required.
  • Page 83 When a mistake is made in the wiring and connection type, the time will be acquired ・ at startup though time synchronization will not be performed, and time is generated on each VZ20X. Do not connect port 2 as it does not function on 1 unit or on the terminal unit in a ・...
  • Page 84 7-17 Connection example (multiple units, time synchronization, daisy chain connections) ・ PC or PLC, etc Ethernet HUB Port 1 Port 1 Port 1 Port 1 Time synchronization supported in a daisy chain Unusable Port 2 Port 2 Port 2 Port 2 Connection type Master Relay...
  • Page 85 Clock accuracy is ±5 ppm. Time on the VZ20X is not backed up. Set the date and time of the PC/PLC via Modbus/TCP. If the date and time are not set from the PC/PLC, the date and time start from 1970-01-01 00:00:00.000.

  • Page 86: List Of Register Assignments

    Registers are used in Modbus communication. A host device (e.g. PC) can be accessed by using Modbus/TCP read and write commands. VZ20X time data, measured value data, status data, parameter data, and other data are stored in registers. ● Conventions Used in D Register Tables The following explains how to view register map tables.
  • Page 87 As the minimum resolution of the time that is written is 1 ms, one count of a 64-bit unsigned integer is 1 ms. Internally on the VZ20X, time is handled as the time elapsed from January 1, 1970. For details on Modbus/TCP function codes, see "7.2.6 Details of Commands/Responses."...
  • Page 88 7-21 Example of writing the time Set date and time : 2021/7/20 12:12:12.123 UNIX time default : 1970/1/1 0:0:0.000 (1) Find the difference between the current time and the UNIX time default (Find the difference by using the functions for handling time that are available in each programming environment.) Day difference 18828...
  • Page 89 0066 Measured value time stamp channels. The coordinated universal time 40104 0067 or UTC can be read as a 64-bit unsigned integer. The device status of the VZ20X 40105 0068 Device status can be read. 40106 0069 CH1 measured value...
  • Page 90 Measured value time stamp channels. The coordinated universal time or 40154 0099 UTC can be read as a 64-bit unsigned integer. The device status of the VZ20X 40155 009A Device status can be read. Measured values can be read as 40156 009B 32-bit signed integers.
  • Page 91 7-24 VZ20X device status Code Descriptions 0x0000 No error 0x2000 Parameter error 0x0100 System error 0x0200 Memory device (FRAM) error 0x0400 Input hardware no response CHn measured value status (n=1 to 8) This is the measured value status of each input channel. This displays the error information of measured values as a single byte.
  • Page 92 If any communication related parameters (indicated with an asterisk (*) next to the register name in the table below) are changed, set the Ethernet switch (register number 41161) to 1. Setting this value to 1 will apply the settings to the VZ20X. Table 3. Communication setting parameters...
  • Page 93 7-26 Table 3. Communication setting parameters (continued) Register number Hex number Register name Descriptions (Reference no.) (hexadecimal) Connection permission IP 41126 0465 R/W 0 to 255 address 2 setting 1(*) Connection permission IP address 2 Connection permission IP 41127 0466 setting 1.Connection permission IP address 2 setting 2(*) address 2 setting 2.Connection...
  • Page 94 7-27 Communication parameters used by the VZ20X can be read and confirmed during communication. Table 4. Communication parameters used Register number Hex number Register name Descriptions (Reference no.) (hexadecimal) 41201 04B0 IP address used 1 0 to 255 41202 04B1 IP address used 2 IP address used 1.IP address used...
  • Page 95 7-28 Table 4. Communication parameters used (continued) Register number Hex number Register name Descriptions (Reference no.) (hexadecimal) 0: OFF 41251 04E2 DHCP setting used 1: ON 0: 1 unit Connection type setting 1: Master unit of daisy chain 41252 04E3 used 2: Relay unit of daisy chain 3: Terminal unit of daisy chain...
  • Page 96 7-29 Note If the input type is changed, the max./min. value of input range, max./min. value of ・ input scale, and input scale decimal point position will be initialized. Configure settings in the following order: max. value of input range, min. value of ・...
  • Page 97 7-30 Table 5. Analog input setting parameters (channel 1 (CH1)) (continued) Register number Hex number Register name Descriptions (Reference no.) (hexadecimal) 41519 05EE Max. value of CH1 input -99999 to 99999 range 41520 05EF 41521 05F0 Min. value of CH1 input -99999 to 99999 range 41522...
  • Page 98 7-31 The register numbers and corresponding hex numbers for channel 2 (CH2) through channel 8 (CH8) are shown below. The names are the same as for channel 1, although the channel numbers differ. Other details (R/W and descriptions) are the same as for channel 1.
  • Page 99 7-32 Table 6. Analog input setting parameters (channel 2 (CH2) to channel 8 (CH8)) (continued) Channel 4 (CH4) Channel 5 (CH5) Register number Hex number Register number Hex number (Reference no.) (hexadecimal) (Reference no.) (hexadecimal) 41651 0672 41701 06A4 41652 0673 41702 06A5...
  • Page 100 7-33 Table 6. Analog input setting parameters (channel 2 (CH2) to channel 8 (CH8)) (continued) Channel 6 (CH6) Channel 7 (CH7) Register number Hex number Register number Hex number (Reference no.) (hexadecimal) (Reference no.) (hexadecimal) 41751 06D6 41801 0708 41752 06D7 41802 0709...
  • Page 101 7-34 Table 6. Analog input setting parameters (channel 2 (CH2) to channel 8 (CH8)) (continued) Channel 8 (CH8) Register number Hex number (Reference no.) (hexadecimal) 41851 073A 41852 073B 41853 073C 41854 073D 41855 073E 41856 073F 41857 0740 41858 0741 41859 0742...

  • Page 102: Outline Of Modbus/Tcp Protocol

    PC or PLC using TCP/IP protocol over a network such as Ethernet. Communication is performed via this communication protocol to read and write registers on the VZ20X and exchange data between connected devices. The VZ20X can be connected to IEEE802.3-compatible networks by a 100BASE-TX Ethernet connection. Host device (PC, etc.)
  • Page 103 When there is no request for 60 seconds or more from the host device after a connection is established, VZ20X breaks the connection. The max. number of transactions on VZ20X is "1." When sending commands continuously, check the response from the VZ20X and then send the next command. Host device (PC, etc.)
  • Page 104 Protocol ID: Specify "0" in the case of the Modbus/TCP protocol. Number of bytes: The number of bytes from the unit ID (byte No.6) onwards. Unit ID: Specify "1" on the host device. "1" is returned from the VZ20X, too, as the response.
  • Page 105 7-38 ● PDU configuration The PDU (Protocol Data Unit) comprises the following n bytes. Byte No. 1 to (n-1) Description Function code Data Function code: Specify the command from the host device. Data: Specify the register No. and number of internal registers, parameter values, etc. according to the function code.
  • Page 106 7-39 ■ Response error code ● When a response is returned to a request When there is a nonconformity in the PDU in the request, VZ20X performs no ・ processing, and returns the following request. MBAP Header Number of bytes...

  • Page 107: Details Of Commands/Responses

    7-40 7.2.6 Details of Commands/Responses These are commands that are used by the PC/PLC for obtaining the information in registers on the VZ20X or for acquiring data. Function code Description Read multiple registers Write single register(*) Write multiple registers Data acquisition control Acquire data *: Function code 06 is enabled with firmware version R1.02.01 or later.
  • Page 108 7-41 ■ 06 Write single register ● Function Data is written to the specified register number. The maximum number of registers that can be written in a single operation is one. ・ For details on the response format when an error occurs, refer to the response ・...
  • Page 109 7-42 ■ 16 Write multiple registers ● Function Data is written to continuous registers for the number of specified points from the specified register No. The maximum number of registers that can be written in a single operation is 50. ・...
  • Page 110 7-43 ■ 70 Data acquisition control ● Function This command starts and stops data acquisition. ・ Function selection Function selection code Description 0001 Start data acquisition 0002 Stop data acquisition ● Message (during normal operation) Element MBAP Header Number of bytes Command Transfer...
  • Page 111 Continue data acquisition? ● Data acquisition interval and Data retention time Acquire data by communication while data is still held on the VZ20X. The data retention time on the VZ20X differs according to the data acquisition interval. The following shows the relationship between the data acquisition interval and data retention time.
  • Page 112 7-45 ■ 71 Acquire data This command can acquire "4 data acquisition intervals' worth of data x data of 8 channels". ● Function Acquisition of latest data acquisition value ・ Acquisition of data previous access value (the same data is acquired again when a ・...
  • Page 113 7-46 Measured values corresponding to the status are displayed as shown in the table below. Error Measured value 0: No error Normal 1: +overscale 105.0 % of input range 2: -overscale -5.0 % of input range 3: Input type OFF data 6: No data 0 to 5bit 7: Not fixed data (during range changing)
  • Page 114 7-47 Continued Year/month STS1 STS1 STS1 STS1 STS1 STS1 STS1 STS1 /day 2 ..Data4 Data4 STS4 STS4 STS4 STS4 STS4 STS4 STS4 STS4 Continued UNIT status Data is arranged in the following order when it is acquired: data acquisition status, year/month/day 1, time 1, CH1-Data1, CH2-Data1, CH3-Data1, CH4-Data1, CH5-Data1, CH6-Data1, CH7-Data1, CH8-Data1, CH1-STS1, CH2-STS1, CH3-STS1, CH4-STS1, CH5-STS1, CH6-STS1, CH7-STS1, CH8-STS1, year/month/day 2, time 2, ･･････, UNIT...

  • Page 115: Usb Communication

    7-48 USB Communication The VZ20X has a USB port exclusively for VZ Configurator. VZ20X parameter settings can be setup up or monitoring can be performed using VZ Configurator. 7.3.1 Specification The PC uses the Windows standard USB driver. USB connector type: Type-C Cable: 3 m or less, USB2.0 or higher...

  • Page 116: Maintenance

    Maintenance Periodically inspect the operating status of the VZ20X to make sure that it is being used in a good condition at all times. Check to see if LED displays, analog inputs and communication are being performed ・ normally. If an abnormality occurs, see "9 Troubleshooting."...

  • Page 117: Input Calibration

    0°C reference temperature unit: ZC-114/ZA-10 made by Coper Electronics Co., Ltd. ・ or equivalent Wire the VZ20X to the calibration equipment as shown in the figure on the next page, and sufficiently warm up each of the equipment. (Warm up the VZ20X for at least 40 minutes.) For precautions in wiring, see "Chapter 4 Wiring."...
  • Page 118 ● DC voltage 0%, 50%, 100% input VZ20X input terminal DC V Output DC voltage generator ● 3-wire resistance temperature detector 0%, 50%, 100% input VZ20X input terminal Output Reistor * Ensure that the resistance of 3 conductors is the same value.
  • Page 119 (0°C reference temperature unit made by Coper Electronics Co., Ltd., model: ZC-114/ZA-10) ● Reference junction compensation of thermocouple input As the temperature of the input terminal section on the VZ20X is close to regular room temperature, the actual output of the thermocouple differs from the value in the thermo- electromotive force table at the reference temperature of 0°C.

  • Page 120: Input Adjustment

    [Start Zero-point Adjustment] button. Normal mode: Mode other than input adjustment mode CAUTION During input adjustment, do not turn the VZ20X off. Doing so might cause the VZ20X to no longer operate normally. Note To enter the input adjustment mode. click the [Execute Adjustment] button in the input ・...
  • Page 121 The following table summarizes the ranges that can be adjusted. Range Types of Input That Use Adjustment Values 20 mV DC voltage 20mV, thermocouples T, B, S, R 60 mV DC voltage 60mV, thermocouples K, J, N, E, C 200 mV DC voltage 200mV DC voltage 1V DC voltage 2V、Standard signal 0.4-2V...
  • Page 122 ■ Adjustment procedure Wire the VZ20X to the calibration equipment as shown in the figure below, and sufficiently warm up each of the equipment. (Warm up the VZ20X for at least 40 minutes.) For precautions in wiring, see "Chapter 4 Wiring."...
  • Page 123 Start up VZ Configurator, and connect to the target VZ20X. Click the [Input adjustment] button in the operation list. Select the channel on which to perform input adjustment. Click the [Execute Adjustment] button for the range to be adjusted. Short-circuit the respective input channel for the analog input to adjust.
  • Page 124 Click the [Start Zero-point Adjustment] button. The mode transitions to the input adjustment mode. Adjustment takes up to 30 seconds. When zero-point adjustment is completed, the following dialog is displayed. Connect the calibration equipment to the channel for the analog input to adjust. Input the reference value for the range to be adjusted according to the table below, and click the [Start full-point adjustment] button.
  • Page 125 8-10 When full-point adjustment is completed, the following dialog is displayed. To return to the input adjustment screen without saving the adjustment results, click the [Discard result] button. IM 77V01B01-01EN 5th Edition: 2023.03.07-00...
  • Page 126 When zero-point adjustment and full-point adjustment are completed, click the [Apply and close] button. This writes the adjustment values to the VZ20X. Repeat steps 5 to 9 for each individual range to be adjusted. To adjust another channel, select the channel to be adjusted, and repeat steps 5 to 9 for that channel.
  • Page 127 8-12 ■ Error code list During input adjustment of the VZ20X, error messages and error codes are sometimes displayed. The following table summarizes a list of error codes. Error Code Description Corrective action Input error Input is not correct Check the input type.

  • Page 128: Parameter Initialization Function

    Parameter initialization resets the VZ20X settings to their defaults. Parameter initialization can be executed from VZ Configurator. When the VZ20X is connected to the PC via an Ethernet connection, the user ID and password cannot be initialized by parameter initialization.
  • Page 129 8-14 ● Initialization procedure Click Main unit management > Reset tab and the following screen appears. Click the [Reset] button. IM 77V01B01-01EN 5th Edition: 2023.03.07-00...
  • Page 130 8-15 This starts parameter initialization. When parameter initialization is completed, the following screen appears. Click the [OK] button. VZ20X reboots. This completes the operation. IM 77V01B01-01EN 5th Edition: 2023.03.07-00...

  • Page 131: Firmware Update

    Please use VZ Configurator R1.01.02 or later when updating the firmware. ・ Do not update the modified firmware file to VZ20X. If done, the operation of VZ20X ・ is not guaranteed. The firmware of VZ20X cannot be downgraded.
  • Page 132 Check the setting of the "Firmware update permission via Ethernet" parameter. Change the setting value to "ON" and click the [Apply] button. This writes the setting value to the VZ20X at the connection destination. This completes the operation. IM 77V01B01-01EN...
  • Page 133 8-18 ● Firmware update procedure (Common to Ethernet and USB) Click Main unit management > Firmware Update tab and the following screen appears. Click the [Select file] button. IM 77V01B01-01EN 5th Edition: 2023.03.07-00...
  • Page 134 8-19 Select the firmware file. When the firmware update is completed, the following screen appears. The LED on the unit changes as follows: During firmware update: Flashing (green) or flashing alternately (green/blue) Completion of firmware update: Lights (blue) after the unit is rebooted Click the [OK] button.
  • Page 135 8-20 ● Checking the firmware version Check to see if the firmware has been successfully updated. Begin operations by establishing a new connection with the VZ20X. Click Main unit management > Firmware Update tab and check the firmware version. IM 77V01B01-01EN...

  • Page 136: Troubleshooting

    Troubleshooting Operation When an Error Occurs and Corrective Action The following describes the device status when an error occurs and the corrective action to take. LEDs do not light simultaneously. They light according to the following order of priority. ROM/RAM error > system error > memory device error > input hardware error > analog input ADC error >...
  • Page 137 Continued VZ Configurator Ethernet Timing of Main unit Analog input Fault Monitoring Device Analog input communication communication Corrective action error status LED status LED Status operation diagnosis display operation operation occurrence display Lights Flashes +Burnout/- Analog input Up scale Normal Normal Check wiring and sensors.

  • Page 138: Trouble Notification Function

    Trouble Notification Function The details of errors can be checked using VZ Configurator via Ethernet or USB communication. Click [Fault diagnosis] and the following screen that displays the error details appears. Fault diagnosis information shows the date and time, status and corrective action. The content displayed is for the latest 30 errors that have occurred.

  • Page 139: Troubleshooting Methods

    ･Power terminal: Rated voltage 24 VDC ･USB power supply: USB Type-C Service is required. Contact your nearest YOKOGAWA dealer. Device does not operate correctly Lights (red), Flashes (red): Service is required. Contact your nearest YOKOGAWA dealer. Flashes (green): Parameters have been initialized.
  • Page 140 Cannot search VZ20X by VZ Configurator Connect PC and VZ20X correctly to network. Set IP address correctly. Set IP address correctly. Consult your network administrator. Ethernet communication is not possible Is Ethernet wiring Wire correctly. correctly wired? Supply power matched to specification.
  • Page 141 ･Wire correctly Is input wiring ･Install terminal block correctly correctly wired? Does input satisfy specifications? Is range setting Correct range setting . adequate? Are noise countermeasures adopted? Service is required. Contact your nearest YOKOGAWA dealer. IM 77V01B01-01EN 5th Edition: 2023.03.07-00...

  • Page 142: Faq

    The following is a probable cause. The DHCP function on the VZ20X is set to ON. →Use VZ Configurator to change the DHCP function setting to OFF via a USB connection. When the setting is ON, the IP address sometimes changes and communication is no longer possible.
  • Page 143 Q6 Is it possible to check the content of backed up configuration files? Content cannot be checked offline by VZ Configurator. The configuration file can be checked only when there are one or more VZ20X units. Backed up configuration settings can be checked by connecting VZ Configurator to VZ20X, and then specifying the file at "Load settings file to the main unit".
  • Page 144 Q8 In a USB connection, VZ Configurator can be connected but monitoring, input adjustments and firmware update are not possible. What is the corrective action for this? Check the power supply method. When the shape of the USB connector on the PC side is other than a Type-C, supply power from the power terminal.
  • Page 145 9-10 Blank Page IM 77V01B01-01EN 5th Edition: 2023.03.07-00...

  • Page 146: Appendix

    Setting > Communication Parameter Name Setting Range Default Explanation Max. 16, 2- or 1-bytes characters (alphanumeric characters, Sets the tag name of the VZ20X. symbols Chinese character) Max. 16, 1-byte characters User ID(*1) (alphanumeric characters USER1 Sets the user ID.
  • Page 147 1 unit type(*1) Relay unit of daisy chain between the PC and the VZ20X. Terminal unit of daisy chain Communication is turned off, and these parameters require beginning with a new connection when setting values were changed in a USB connection.
  • Page 148 App-3 Setting > Analog Input (continued) Parameter Name Setting Range Default Explanation Toggles between use/non-use of the First-order lag filter OFF, ON first-order lag filter. This port number is used for communication with Filter coefficient 1 to 100 configurator and for communication using Modbus/TCP function codes 03 and 16.
  • Page 149 App-4 Blank Page IM 77V01B01-01EN 5th Edition: 2023.03.07-00...
  • Page 150 The VZ20X Analog Sensing Unit can measure various analog signals at high speed, high accuracy and simultaneously. Isolation between input channels ensures excellent noise resistance. VZ20X measurement data can be acquired on a PC, PLC or other host device via Ethernet. ■ Features  Reliable Sensing...
  • Page 151 When the host device is the GA10, the date and • Modbus/TCP server: time are acquired only once when the VZ20X is Can be read measurement data and read or write connected from the GA10. the date, time and parameters through register When the host device is a PC or PLC, the date access (function code 03/06/16).
  • Page 152 10 µV/250 Ω or less (200 mV range) Cable: 3 m or less, USB2.0 or higher 30 µV/250 Ω or less (1 V range) Power can also be supplied to the VZ20X from the 0.25%/2kΩ or less (DC voltage 2 V range or higher USB port.
  • Page 153 100.00 °C ±0.2°C ±0.5°C Pt100-H 4-wire * Excluding reference junction compensation error Thermocouple: JIS C 1602-2015, IEC 60584-1:2013 Resistance temperature detector: JIS C 1604-2013, IEC 60751:2008 All Rights Reserved. Copyright © 2021, Yokogawa Electric Corporation GS 77V01B01-01EN 7th Edition 2023.02.13-00...
  • Page 154 EN IEC 63000 (*1) directions on the three axis directions *1: Support for VZ20X style 2.01 and later. *2: When mounting on a DIN rail, attach the fastening plate and mount the main unit firmly so that it does not move *2: Support for VZ20X style 2.02 and later.
  • Page 155 Slave communication (connection target: VZ20X) ■ External Dimensions Unit: mm Third angle projection Normal tolerance = ± (value of JIS B 0401-2016 tolerance class IT18) / 2 All Rights Reserved. Copyright © 2021, Yokogawa Electric Corporation GS 77V01B01-01EN 7th Edition 2023.02.13-00...
  • Page 156 ■ VZ Configurator ■ Model and Suffix Codes Set up VZ20X parameters over Ethernet or USB Model VZ20X: Analog Sensing Unit using VZ Configurator. Suffix Model Description Codes  Functions • 8 Universal inputs (DC voltage, Standard signal, Resistance,  Parameter settings...
  • Page 157  Handling of non-conforming products If Yokogawa verifies a non-conformity of the product that is attributable to Yokogawa within the warranty period, we will deliver an equivalent product. Yokogawa can not provide a free evaluation of non-conforming products.
  • Page 158 Revision Information Title : VZ20X Analog Sensing Unit User’s Manual Manual No. : IM 77V01B01-01EN Oct. 12, 2021/1st Edition Newly published Jul. 25, 2022/2nd Edition Windows 11 support Aug. 30, 2022/3rd Edition CE/UKCA safety and EMC standards compliant Nov. 11, 2022/4th Edition...

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