Getting Started with CX-Server OPC
Contents
1. In Excel it is opened by right clicking on an object and selecting the Properties option from the pop up menu The dialog allows you to scan through all the available options Some options require you to enter specific information others provide a choice of entries from a drop down menu From the drop down menu at the top of the dialog select the objet to be edited This will display the full range of options available for that object which can then be viewed either Alphabetically or Categorised A full list of the options and their settings and ranges for the CX Server OPC objects can be found in Appendix A Component Properties Gauge2 Gauge z Alphabetic Categorized Gauge2 False C amp HOOECECEOR 1 Raised CommsserverName Comms1 DisplayMajorTicks 1 True DisplayMajorUnits 1 True DisplayMinorTicks E sHooo00000 141 75 IndicatorColour GB sHoo0000FFe Not Set 153 True MajorTickInterval 10 MaxAngle 180 MaxGauge alue 50 Min ngle 0 MinGauneyalue 50 fia Page 21 OMRON Getting Siarted with CX Server OPC Project Tree Like Explorer the Project Tree provides a graphical representation of you application In Visual Basic it is displayed to the right of the work form while in Excel it is shown on the left of the code sheet By expanding the tree you can see all your associated files and work sheets It is possible to open any number of work sheets by simply double clicking on them Hav2. OPC item BoilerTemp in the OPC group called MyGroup The script will continue to execute the next line immediately GetData Starts asynchronous data reading of the specified OPC item at the group update rate Example OPCComms1 GetData MyGroup Myltem In this example Myltem in MyGroup would be read at the group update rate Data is then sent to the OnData routine StopData Stops asynchronous data reading of the specified OPC item Example OPCComms1 StopData MyGroup Myltem In this example the asynchronous reading of Myltem in MyGroup would be stopped Page 27 OMRON Getting Started with CX Server OPC OnData This event is sent back to the container e g Excel when data has changed This is either data started by calling GetData or by calling Read or Write in asynchronous mode Example Private Sub OPCComms1_OnData ByVal Group As String ByVal ltem As String ByVal Value As Variant ByVal BadQuality as Boolean TextBox Item Segment Value End Sub In this example the CX Server 7 Segment component is set to the value of the point and a text box is set to display the name of the item If BadQuality is set to True then the value may be inaccurate e g from a device which has been disconnected The OnData routine can be enhanced to include logical expressions on the incoming Item name and then update the correct graphical object etc for example Private Sub OPCComms1_OnData ByVal G
3. and C PLCs It does not provide detailed information concerning the PLCs themselves for this information the commercial manual for the device must be consulted This manual contains the following information Getting Started with CX Server OPC This describes the CX Server OPC software in general terms Using the OPC Server This describes running and setting up the OPC Server for use by any OPC Client Using Omron OPC Client Components This describes using the supplied ActiveX components to access PLC data and includes a tutorial for Excel and Visual Basic host applications Appendix A Component Properties This appendix summerises the available properties for the ActiveX objects Appendix B Script Interface The Visual Basic script interface for the OPC Server communications control A Glossary of Terms and Index are also provided Warning Failure to read and understand the information provided in this manual may result in personal injury or death damage to the product or product failure Please read each chapter in its entirety and be sure you understand the information provided in the chapter and related chapters before attempting any of the procedures or operations given Page 4 OMRON Getting Siarted with CX Server OPC Table of Contents CX Server OPC Page Getting Started with CX Server OPC 00 ccsscscsscsssccsssccesssccscscesees About HHS Manual 0 ccccssccccecssocssecessnccisnu
4. on general aspects of CX Server OPC This system is intended to complement the manual by providing on line reference to specific functions of the software and how to use them The manual is designed to provide tutorial information and discuss the various facilities offered by CX Server OPC Page 8 OMRON Getting Siarted with CX Server OPC Help Topics The help can be launched in several ways The Contents page can be launched by selecting Help from the CX Server OPC folder on the Start button Alternatively if the server is running right click the CX logo in the system tray and select Help from the menu About CX OPC Server Server Info Select CX Server Project Disconnect lients Shutdown l 15 18 The help system provides a standard look up dialog under the Contents tab showing the contents of the CX Server OPC Help file Double click on an item to read the associated information Refer to Microsoft Windows documentation for further information on using the Index and Find features About CX Server OPC The OPC Server menu includes an About dialog contains essential version number information and includes details of the version of CX Server installed that are required for obtaining technical support The CX Server ActiveX Components also include an About dialog containing essential version number information which is accessible from their properties menu In addition a brief description of CX Serve
5. Group BoilerTemp Read Reads the value of an OPC item Example of synchronous read intVal OPCComms1 Read MyGroup BoilerTemp WaitUntilComplete In this example the OPC item BoilerTemp in the OPC group called MyGroup will be read from the OPC Server and will be stored in intVal The script will wait for the read operation to Page 26 OMRON Getting Started with CX Server OPC complete before continuing to execute the next line This is identical to the operation of the Value method Example of asynchronous read OPCComms1 Read MyGroup BoilerTemp NoWaiting In this example the OPC item BoilerTemp in the OPC group called MyGroup will be read from the OPC Server The script will continue to execute the next line immediately and when the data is read it generates an OnData event Write Writes the value of an OPC item Example of synchronous write OPCComms1 Write MyGroup BoilerTemp NewValue WaitUntilComplete In this example NewValue will be written to the OPC item BoilerTemp in the OPC group called MyGroup The script will wait for the write operation to complete before continuing to execute the next line This is identical to the operation of the Value method Example of asynchronous write OPCComms1 Write MyGroup BoilerTemp NewValue No Waiting In this example NewValue will be written to the
6. OMRON Getting Started with CX Server OPC CX Server OPC User Manual Getting Started Version 1 0 Page 1 OMRON Getting Started with CX Server OPC Notice OMRON products are manufactured for use according to proper procedures by a qualified operator and only for the purposes described in this manual The following conventions are used to indicate and classify precautions in this manual Always heed the information provided in them Failure to heed precautions can result in injury to people or damage to the product DANGER Indicates information that if not heeded is likely to result in loss of life or serious injury WARNING Indicates information that if not heeded could possibly result in loss of life or serious injury Caution Indicates information that if not heeded could result in relatively serious or minor injury damage to the product or faulty operation OMRON Product References All OMRON products are capitalised in this manual The word Unit is also capitalised when it refers to an OMRON product regardless of whether or not it appears in the proper name of the product The abbreviation PLC means Programmable Logic Controller and is not used as an abbreviation for anything else Page 2 OMRON Getting Siarted with CX Server OPC Visual Aids The following headings appear in the left column of the manual to help you locate different types of information Note Indicates information of particul
7. al is the default DisplayFontColour E amp H00000000 amp The code determines the colour of the display font Click the browse button to display the colour palette DisplayFormat 0 Dec Determines the format used to display the analogue display information 1 Hex 0 Decimal 1 Hexadecimal 2 Scientific 2 Scientific DisplayMajorTicks False Shows or hides the major tick marks of the scale True True Show False Hide DisplayMajorUnits False Shows or hides the major units markers of the scale True True Show False Hide DisplayMinorTicks False Shows or hides the minor tick marks of the scale True True Show False Hide DisplayMinorUnits False Shows or hides the minor units markers of the scale True True Show False Hide DisplayType 0 Analogue Determines the type of display 1 Digital 0 Analogue as a numeric value 1 Digital as textual value 2 Text 2 Text as text Enabled True Switches the object on or off False True On False Off Font Arial This is the system name of the font used for the object title Use the browse button to display the font dialog Arial is the default FontColour E 8000000008 The code determines the colour of the title font Click the browse button to display the colour palette Height 141 Sets the overall height of the object in pixels Page 23 OMRON Getting Started with CX Server OPC Property Title Example Values Description Indicat
8. ar interest for efficient and convenient operation of the product 1 2 3 Indicates lists of one sort or another such as procedures checklists etc 5 Represents a shortcut on the Toolbar to one of the options available on the menu of the same window WStart Indicates a program must be started usually by clicking the appropriate option under the standard Windows Start button Note Indicates procedures that are specific to Visual Basic a OMRON 2000 All rights reserved No part of this publication may be reproduced stored in a retrieval system or transmitted in any form or by any means mechanical electronic photocopying recording or otherwise without the prior written permission of OMRON All copyright and trademarks acknowledged 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 Every precaution has been taken in the preparation of this manual Nevertheless OMRON assumes no responsibility for errors or omissions Neither is any liability assumed for damages resulting from the use of the information contained in this publication Page 3 OMRON Getting Started with CX Server OPC About this Manual This manual describes the CX Server OPC application and its ability to interface with OMRON CS CV
9. ating Systems 7 Help Topics 9 I Inserting Data in Cells 18 Installing Uninstalling CX Server OPC 8 O Objects Overview 14 OPC Foundation web site 10 What is it 10 OPC Server Configuring for remote connection 12 Starting 10 Using Third Party OPC Clients 11 Operating Systems 7 Other Features 19 Advanced Properties 21 Controlling ActiveX Objects 22 Event Driven Routines 20 The Project Tree 22 P Project Tree 22 R Running an Application 18 S Script Interface 26 Functions 26 Script Interface Functions GetData 27 OnData 28 StopData 27 Starting CX OPC Server 10 System Requirements 7 Hardware Requirements 7 Page 31 OMRON Getting Started with CX Server OPC T V Technical Support 9 Viewing Data using Omron Graphical Control 15 The Help System and How to access it 8 Tutorial Step 1 Viewing Data using Omron Graphical Control 15 W Tutorial Step 2 Inserting Data in Cells 18 Tutorial Step 3 Adding Third Party Activex Controls 19 U Using the OPC Client components 14 Using the OPC Server 10 Using Third Party OPC Clients 11 What is OPC 10 Page 32
10. aximum value of the gauge MaxValue 999 99 Sets the maximum value that can be shown by a display MinAngle 0 Determines the length of the arc for rotary gauges Range 360 MinGaugeAngle 50 Sets the minimum angle of the gauge MinGaugeValue 10 Sets the minimum value displayed on the gauge MinorTickInterval 2 Sets the number of tick intervals between each maior tick interval MinValue 999 99 Sets the minimum value that can be shown by a display NumberBase 10 Number Base for 7 Segment e g 2 for Binary 10 for Decimal 16 for Hexadecimal NumberOfDigits 3 Determines the number of digits to be included in the display Orientation Oor1 Sets the orientation of the gauge Horizontal or Vertical 0 Vertical 1 Horizontal PrintObject True Determines if this ActiveX object will be shown on a printout of the work False sheet True Printed False Not printed Round Oor1 Determines the shape of the LED indicator 0 Square 1 Round ScaleFont Arial This is the system name of the font used for the scale Use the browse button to display the font dialog Arial is the default ScaleFontColour E amp H000000408 The code determines the colour of the scale font Click the browse button to display the colour palette SegmentColour E amp H0000C000 amp The code determines the colour of the display segments Click the browse button to display the colour palette Shadow True Adds or removes a shadow from the object giving it a raised appearance False Tr
11. ce at any point in the CX Server OPC application when the manual is not to hand This general help system uses a fast hypertext system that allows progressively more information to be obtained about any topic by selecting keywords within the descriptive text Throughout this manual it is assumed that a working knowledge of Microsoft Windows is obtained and that the user can Use the keyboard and mouse Select options from Windows menus Operate dialog boxes Locate open and save data files Edit cut and paste text Drag and drop Use standard Help systems including Index and Find features Start programs from the START button If Windows has not been used before it is recommended that some time working with the Microsoft documentation is spent before using CX Server OPC gt gt gt o o o o This introductory section deals with several important aspects of installing CX Server OPC and setting it up for use It is recommended that this entire section be read before installing the software Page 6 OMRON Getting Started with CX Server OPC System Requirements CX Server OPC operates on IBM compatible personal computers with 200 MHz Pentium central processor It is designed to run in the Microsoft Windows 95 98 and Windows NT V4 0 environment Note CX Server OPC is not guaranteed to be compatible with computers running Windows emulation e g Apple Macintosh Hardware Requirements The following config
12. d the line Cells 1 1 OPCComms1 Value GroupName OPCBoilerTemp where OPCBoilerTemp is the name of the item to read 3 Close the Visual Basic editor and run the application as shown in Step 1 The cell A1 that is row 1 column 1 will show the required data Page 18 OMRON Getting Siarted with CX Server OPC Step 3 Adding Third Party ActiveX Controls Step 1 shows data in an Omron graphical control but the data can used by other Activex controls like Graphical Control Libraries supplied by other manufacturers or controls like Charts or Scroll Bars supplied with Microsoft products Assuming Step 1 above has been completed the following steps show connecting the data to a standard Scroll Bar 1 2 3 1 Add a standard Scroll Bar from the Control Toolbox al zi 2 Select and resize the buttons as required then drag and drop the buttons in the desired position 3 Double click on the scroll bar buttons This will reposition the cursor in the code sheet at the following entry Private Sub Scrollbarl_Change End Sub Note In Visual Basic the default name for scroll bars is HScroll1 or VScroll1 4 Add the following syntax The additional command instructs any new Scroll Bar value to be written to the server Private Sub Scrollbarl_Change OPCComms1 Value GroupName OPCBoilerTemp Scrollbarl1 Value End Sub eg Run the application as shown in Step 1 The communications control w
13. defined by the number of pixels across and the number of pixels down e g 1024 x 768 Abbreviation for Programmable Logic Controller A point is used to hold a value of a predefined type Boolean Integer Text etc The contents of a point may be controlled by an object or I O mechanism such as DDE The contents of a point may control the action or appearance of an object or be used for output via an I O mechanism A mode of video display that provides 800 x 600 pixel resolution or higher with 16 or more colours and is supported on Super Video Graphics Adapter systems An integral part of Microsoft Windows which allows Microsoft Windows based applications to be started from icons and for all applications to be organised Page 30 OMRON Getting Started with CX Server OPC index A About CX Server OPC 9 About this Manual 6 ActiveX Objects 7 Segment 14 Display 14 LED Indicator 14 Linear Gauge 14 OPC Communications 14 Rotary Knob 15 Rotational Gauge 14 Timer 15 Toggle 15 Adding a 7 Segment Display 17 Adding the Communication Control 15 Adding Third Party ActiveX Controls 19 Advanced Properties 21 C Component Properties 23 Configuring server for remote connection 12 Connecting to an OPC Server 16 Controlling ActiveX Objects 22 E Event Driven Routines 20 G Getting Started with CX Server OPC 6 Glossary of Terms 29 H Hardware Requirements 7 Oper
14. depend on the client being used Consult your OPC Client documentation for full details However the following is a basic overview 1 2 3 1 Start and configure the OPC Server as described above PAStart WStat 2 Start the OPC Client Page 11 OMRON Getting Siarted with CX Server OPC Depending on the client either browse for local OPC servers and select OMRON OpenDataServer 1 or type the name directly Note If the client supports browsing for servers but the server is not shown the client may not be fully OPC version 2 compliant Create an OPC Group from the client Create an OPC Item from the client If the client supports OPC item browsing facilities browse the OPC Server to list the namespace groups and items to create the OPC Item ID Otherwise type the CX Server logical name as the OPC Item ID Configuring the PC for remote connection The OPC interface uses a Microsoft technology called DCOM This allows the OPC client and OPC server to be seamlessly Distributed over a PC network The OPC Server should be running on the PC with direct connection to the PLC or PLC network However the OPC Client or indeed multiple OPC Clients can be run on different networked PCs and will automatically read and write data over the PC network To do this the PC running the OPC Server must be correctly configured For full details of DCOM configuration and security issues see your Microsoft documentation The following is a
15. ects the current value e g on start up and will change position in response to an external influence Timer The timer enables you to run a set of instructions repeatedly at regular intervals Using the OPC Server The following sections take you through the steps required to open your selected application i e Excel or Visual Basic and create a working area Using the short tutorial you can then continue and load a number of ActiveX objects link them together and run a simulation As you became more practised in using CX Server OPC you will find there is usually more then one way to perform an operation The following procedures may not always the quickest but have been written to show how the application works using the basic features If the ActiveX objects are not visible in the Visual Basic Toolbox they can be added as follows 1 2 3 1 Right click in the Toolbox and select the Components option This will open the Components dialog 2 Find the CX Server OPC controls in the list all of which all start with OMRON CX and tick each box 3 Click the OK button The objects are now displayed in the Toolbox Step 1 Viewing Data using Omron Graphical Controls Adding the Communications Control Before the Graphical Controls objects of CX Server OPC can communicate with an OPC Server the correct data source connections have to be set up for it This is not necessary if the Graphical Control will be used stand alone and driven f
16. iesS ssssessocsssosesooecssocesssesesosese 29 Appendix B Script Interface sosesosssossscsssossscssosessessssesossoosssssssse 20 PPM ES caeremonias EAG i 26 ilossary of erma scssssesssiissessessoosssssssossoss ossessssososss osssss s asosi soss 29 jie Kea APE E E E E E E Page 5 OMRON Getting Started with CX Server OPC Getting Started with CX Server OPC This book introduces the CX Server OPC application to a new user CX Server OPC allows PLC data collected by CX Server to be accessed by standard OPC clients It allows existing process data to be collected and analysed plus it includes graphical components allowing easy creation of simple SCADA applications Included with CX Server OPC is the CX Server Runtime plus a range of ActiveX components that can be dragged and dropped onto your Excel Workbook or Visual Basic Form About this Manual This manual helps a new user get started with CX Server OPC by describing the software installation and computer configuration and by leading the user through the basics of CX Server OPC Separate OMRON manuals describe the related products CX Server CX Programmer and SYSMAC SCS Small example applications are included to demonstrate the basic features of the product These can be used to help with product familiarity CX Server OPC comes with a comprehensive on line help system which is designed to complement this manual and provide a quick referen
17. ill disappear and the 7 Segment display will show the current value When you click on the scroll bar buttons the value is sent to the server This new value is then shown on the 7 segment display Note that the maximum value is limited to 100 This is the default value of the scroll bar buttons This example shows a control setting a value Third Party controls can also display values For this the syntax would be depending on actual control ControlName Value OPCComms1 Value GroupName OPCBoilerTemp This script could also be added to a button or Timer control as explained in Step 2 Script functions are described further in Appendix B Other Features The following sections provide a brief overview of some of the more advanced features available in CX Server OPC Page 19 OMRON Getting Started with CX Server OPC Event Driven Routines Many of the script examples in this manual use asynchronous communications that is communications are carried out on demand without synchronisation with the rest of the system Asynchronous communications can be easily used to quickly create solutions that are easy to understand As a solution grows however asynchronous communications can prove inefficient and produce unpredictable updating which is difficult to debug because multiple scripts may be demanding the same data at the same time The OPC Communications Control provides facilities for synchronous communications that is c
18. in Computer Name field For the server included with CX Server OPC select Omron OpenDataServer 1 from the list The connection can be tested by clicking the Info button that will display standard OPC status information collected from the OPC server At least one OPC client Groups must now be defined using the Groups tab Choose any meaningful name Add an Item for the data to display using the Items tab Choose any meaningful name e g OPCBoilerTemp Type the Item ID of the item as defined by the OPC Server or use the Browse button if the server supports the optional Browse items interface For the server included with CX Server OPC the Item ID is same as the CX Server Point Name e g BoilerTemp Click the OK button to complete the configuration The communications control is now ready to connect to the OPC Server and retrieve data This data can be accessed using script commands see Appendix B or by adding a Graphical Component Adding a 7 Segment Display 1 2 3 1 With the host application in design mode add a 7 Segment control Right click on the graphical component and from the popup menu select the OMRON CX 7 Segment Control Object option Note In Visual Basic the menu option is called Properties a In the component properties dialog select the Data Source tab and enter the following information Page 17 OMRON Getting Started with CX Server OPC e Server Select the name of the commu
19. ing multiple work sheets open in this way enables you to copy and paste between them saving you valuable time rewriting sections of code that already exist and more importantly are known to work Project YBAProject x AcrobatPDF Writer PDFWriter xla q Microsoft Excel Objects Sheet1 Sheet1 Thisworkbook 3 63 Modules 2 AutoExec 2 AutoExit 2 DistMon 2 IniFiles 2 RegistrationDatabase 2 Strings l A BAProject Book1 xls 259 Microsoft Excel Objects Sheet1 Sheet1 Sheet2 Sheet2 EB Sheet3 Sheet3 This Workbook Forms UserForm 3 Class Modules E Classi Controlling ActiveX Objects A number of objects can be grouped together such as the 7 segment display and the spin buttons by selecting the objects you want to group while holding down the Shift key as you select each object When you have selected all the objects right click on an object and select the Group option from the drop down menu Note however that objects must be ungrouped before their parameters can be edited Other drawing commands such as Bring to Front Send to Back Cut Copy Past etc follow the standard windows conventions and are selected from the toolbar and or drop down menus Page 22 OMRON Getting Started with CX Server OPC Appendix A Component Properties This appendix gives a list of the available properties Each component supports a selectio
20. ject is updated Value 0 Determines the default value of the ActiveX object Visible True Switches the object between visible and invisible in run mode False True Visible False Invisible Width 98 25 Determines the overall width of the object in pixels Page 25 OMRON Getting Started with CX Server OPC Appendix B Script Interface The Script Interface defines the Visual Basic script interface for the OPC communications control Functions Value Function for getting and setting an OPC item value Read Function to read the value of an OPC item Write Function to write the value of an OPC item GetData Function for starting OnData events StopData Function for stopping OnData events OnData Event for receiving notification of a change in data Value Reads or writes the value of an OPC item Example 1 Reading a value intVal OPCComms1 Value MyGroup BoilerTemp In this example the OPC item BoilerTemp in the OPC group called MyGroup will be read from the OPC Server and will be stored in intVal Example 2 Writing a value OPCComms1 Value MyGroup BoilerTemp 50 In this example the value 50 will be written to the OPC item BoilerTemp Note Value is the default property for all objects so is assumed if omitted Therefore the following examples are the same intVal OPCComms1 Value MyGroup BoilerTemp and intVal OPCComms1 My
21. le remote connection check box From the Default Properties tab configure the Default Authentication Level to Connect and the Default Impersonation Level to Identify Setup the access permissions by either a On the Default Security tab adding the user to the Access list by clicking the Edit Default button b From the Applications tab configure the properties for OPC Server and OPC ServerList Class On the Security tab add the required users to each of the Custom Permissions Third party servers and clients running on Windows 95 or Windows 98 also require the Microsoft Remote Registry network service to be installed with the operating system and correctly configured on both the server and client machine To check start the Control Panel and view the Network settings In the list of network components look for Microsoft Remote Registry If it does not exist follow these steps to add it 1 2 3 1 2 In the Network settings ensure User level access control is selected on the Access Control tab From the Configuration tab click Add to add a Network component Choose Service from the type list and click Add Click Have Disk and browse your Windows CD Select the path Tools ResKit NetAdmin RemotReg and select regsvr inf Follow screen prompts to complete installation and reboot if necessary On the server machine select Passwords from the Control Panel Ensure the Enable remote administration of this server optio
22. mportant to realise that any changes that are made to the CDM file may affect the other applications ii To create a new CX Server Project CDM file e Click the New button and in the Create Project dialog navigate to the directory in which you wish to create the new file Inthe File Name field enter the new file name When you click the Save button the full path name of the new file will be entered into the Project field Click the OK button 4 Projects can be edited by clicking the Edit Project button and then making the required changes from the Project Editor Dialog This is a CX Server runtime utility invoke help from within it for details of how to add and configure PLCs and Points 5 Click the OK button to complete the configuration The OPC Server is now ready for use by any OPC Client that is compliant with OPC Data Access version 2 The CX Server project file cannot be changed while clients are connected To select a different CX Server project file at a later date either start the OPC Server manually from the Start button or if the server is running select Disconnect Clients and then follow steps 3 5 of the above procedure Tip You can make the OPC Server start automatically when the PC starts by copying the shortcut on the Start button in the CX Server OPC folder to the Startup folder Using with Third Party OPC Clients The exact procedure for connecting Third Party OPC Clients to the OPC Server will
23. n is checked Add all required user ids to the Administrators list by clicking Add Page 13 OMRON Getting Started with CX Server OPC Using the OPC Client Components CX Server OPC also includes an OPC Client called Omron OPC Communications Component and graphical controls that link directly to the communications component These are all ActiveX controls allowing data to easily be collected and displayed in either Excel or Visual Basic The graphical controls and communication component can of course be used with any version 2 OPC Server Objects Overview OPC Communications Control This control provides a seamless interface between the CX Server OPC host application Excel Visual Basic and any version 2 compliant OPC Server Note that the control is only visible when the host application is in the Design mode 7 Segment The 7 segment displays a numerical value in Binary Decimal or Hexadecimal formats Leading zeros and unused segments hidden The colour of the segments and the display background can be set independently The 7 Segment can not be used to set a value Display The Display displays an analogue or text value The Display only displays a value i e you can not set a value using this display LED Indicator The LED functions as a coloured on off indicator The colour of the indicator and the display background can be set independently while its shape can be round or square In the off state the chosen indicator c
24. n of these properties which can be set in design mode by using the properties dialog or in the run time by using a Visual Basic script command for example Object1 Value 10 Property Title Example Values Description About None Description of the object Custom None Opens the properties dialog for the object Name Object Name This is the system generated name for the object Autoload True Switches the Autoload function On or Off When set to On the Activex False component value will autoload True On False Off AutoSize 0to1 Switches the fonts auto size option on or off 0 Off 1 On BackColour HB amp HOOEOEOEO amp The code determines the background colour of the object Click the browse button to display the colour palette BorderStyle O0to3 The value determines the visual appearance of the border that surrounds the object 0 None 1 Raised 2 Sunken 3 Single Line ButtonStyle 0to6 The value determines the button style 0 Toggle Switch 1 Colour Button 2 In Out Button 3 Rotary Switch 4 Rocker Switch 5 Indicator Button 6 Blank Button CommsServerName Comms1 ton This is the name of associated communications control DecimalPlaces 2 Number of decimal places for 7 Segment Only applies when NumberBase 10 DisplayFont Arial This is the system name of the font used for the display Use the browse button to display the font dialog Ari
25. nate be input from and is destined is output to to the internal computer memory a PLC or a target application Pictorial representations of computer resources and functions A spread sheet application A windowing environment for MS DOS computers that is noted for its GUI and for features such as multiple typefaces desk accessories such as a clock calculator calendar and notepad and the capability of moving text and graphics from one application to another via a clipboard CX Server OPC will run only under Microsoft Windows A word processing application Object Linking and Embedding Used to transfer and share information between Microsoft Windows based applications and accessories Abbreviation for OLE for Process Control Open standard for the exchange of data between OPC Servers and OPC Clients used within the process control industry A software application which uses an OPC interface to exchange data with an OPC Server A collection of OPC Items A single piece of data e g a PLC memory area stored with an OPC Server Page 29 OMRON OPC Server PC Pixel PLC Point SVGA mode Windows Desktop Getting Started with CX Server OPC A software application which uses an OPC interface to provide data to OPC Clients Abbreviation for Personal Computer A single displayable point on the screen from which a displayed image is constructed The screen resolution of the computer s Visual Display Unit VDU is
26. nications control to be used If only one has been added it is selected automatically If the list is empty then you need to add one first Group Select the required group If the appropriate group is not in the list click the gt button and select Add Group Item Select the point Item If the appropriate Item is not in the list click the gt button and select Add Item 4 Click OK to complete the connection Running the Application eg Click the Mode button to change to Run mode The communications control will disappear and will connect to the server Once connected the 7 Segment display will show the current value Note In Visual Basic click Pto switch to run mode and m to return ae to design mode Step 2 Inserting Data in Cells Step 1 shows data in a graphical control but the data can also be inserted directly into cells within Excel This could be useful for further numerical analysis like averaging or statistical control Note In Visual Basic there is no concept of cells but the same technique could be used to set a Visual Basic variable Assuming Step 1 above has been completed 1 2 3 1 Decide when the data should be updated i For the user to control the data update add a standard Command i Button from the Control Toolbox ii For the value to constantly update on a regular interval add the Omron timer control 2 Double click the added object to access the script and ad
27. olour is dimmed Linear Gauge The Linear Gauge displays an analogue value by filling a rectangle to represent the actual value as a proportion of its expected maximum The rectangle can be filled from bottom to top like a thermometer or from left to right like a progress complete bar There is also a configurable scale enabling intermediate values to be estimated The Linear gauge will only display a value you can not set a value with this gauge Rotational Gauge The Rotational Gauge displays an analogue value similar to a speedometer An indicator needle rotates according to the value There is a configurable scale enabling intermediate values to be estimated The Rotational gauge will only displays a value you can not set a value with this gauge Page 14 OMRON Getting Started with CX Server OPC Rotary Knob The Rotary Knob allows the you to set an analogue value similar to a volume knob You can rotate the knob e g by clicking and dragging the mouse to set the pointer to a new position There is a configurable scale enabling intermediate values to be estimated The pointer always reflects the current value e g on start up and will change position in response to an external influence Toggle The Toggle allows you to toggle a Boolean bit between its On and Off state This is as a switch that can be clicked to change its state The current state is shown by the position of the switch The switch position also refl
28. ommunications and data updating are synchronised The GetData and StopData script commands see Appendix B for full details control the generation of OnData events on regular intervals which can be used to efficiently drive multiple controls and is easier to debug Example 1 2 3 1 Add an OMRON CX OPC Communications Control and two standard Command Buitons 2 Double click the communications control to add the following script Note the script is in the Event OnData Private Sub OPCComms1_OnData ByVal Group As String ByVal Item As String ByVal Value As Variant ByVal BadQuality As Boolean If Item OPCBoilerTemp Then Data is from this point Cells 1 1 Value End If End Sub Every time OnData is called with data from the point OPCBoilerTemp the value is written to the cell A1 3 Double click the Command Buttons to add the following script Private Sub CommandButtonl_Click OPCComms1 GetData MyGroup OPCBoilerTemp End Sub Private Sub CommandButton2_Click OPCComms1 StopData MyGroup OPCBoilerTemp End Sub Run the application Click CommandButton1 to start creating OnData events every second Note the cell A1 updating Click CommandBultton2 to stop the updating Page 20 OMRON Getting Siarted with CX Server OPC Advanced Properties When working with Visual Basic the advanced properties dialog is normally displayed on the right of the work form although it can be docked in any position
29. orColour E amp HOOFF0000 amp The code determines the colour of the indicator Click the browse button to display the colour palette ItemName Output Flow No1 This is the reference name given to the object KnobBorderPercentage 25 This value determines the size of the knob border as a percentage of the overall size KnobColour MB amp H02C4723E amp The code determines the colour of the knob Click the browse button to display the colour palette KnobStyle 0 Integer Determines how the numerical value of the knob is interpreted 1 Real 0 as an integer or 1 as areal number LeadingZeros False Turns On or Off the leading zero s of the display True False On True Off LEDColour E amp HOOFFO000 amp The code determines the default or inactivated colour of the LED indicator Click the browse button to display the colour palette Left 153 Determines the position of the object from the left hand edge of the work area in pixels Locked True Locks the actions of the ActiveX object False True Locked False Unlocked MajorTickinterval 10 Sets the number of major tick intervals MaxAngle 180 Determines the length of the arc for rotary gauges Range 360 MaxCharacters 6 Determines the number of digits to be included in the display MaxDecimalPlaces 2 Determines the position of the decimal point in the display MaxGaugeValue 50 Sets the m
30. quick guide Configuring a machine running Windows NT 1 2 3 GAStart 1 2 3 Start DCOMCNFG EXE e g by selecting RUN from the Start button The default location is C WINDOWS SYSTEM View the Default Properties tab Ensure that the Enable Distributed COM on this computer is checked From the Default Properties tab configure the Default Authentication Level to Connect and the Default Impersonation Level to Identify Setup the access permissions by either a On the Default Security tab adding the user to the Access Launch and Configuration lists by clicking the Edit Default button in each case b From the Applications tab configure the properties for OpenDataServer and OpcEnum On the Security tab add the required users to each of the Custom Permissions Configuring a machine running Windows 98 or Windows 95 1 2 3 GAStart 1 Ensure File and Printer sharing is enabled by selecting Network from the Control Panel Add a service and click either File and print sharing for Microsoft Networks or File and print sharing for Netware Networks as appropriate Start DCOMCNFG EXE e g by selecting RUN from the Start button The default location is C WINDOWS SYSTEM Page 12 OMRON 3 4 Getting Started with CX Server OPC View the Default Properties tab Ensure that the Enable Distributed COM on this computer is checked View the Default Security tab and check the Enab
31. r OPC and the CX Automation Suite can be accessed from the main help contents dialog Technical Support If the installation instructions for this application have been followed no difficulties should be encountered If a problem occurs check that it does not relate to a fault outside CX Server OPC for instance with external components Check the following e The PC is working correctly e The external system or application is working correctly e The communications system is set up correctly Any errors are cleared in the associated PLCs When Customer Services need to be contacted keep the following details to hand A clear and concise description of the problem is required together with the exact text of any error messages Note Use the About dialog to obtain the version number of the application Page 9 OMRON Getting Siarted with CX Server OPC Using the OPC Server This section introduces the OPC Server application to a new user What is OPC OPC stands for OLE for Process Control and is a standard published by the OPC Foundation The basic aim of the OPC standard is to allow hardware vendors to produce software drivers called OPC Servers and for software vendors to produce applications called OPC Clients which use a standard method for data interchange This allows software and hardware from different vendors to be used together The latest version of the OPC standard is version 2 This replaces the earlie
32. r version 1 standard CX Server OPC provides an OPC version 2 server by adding an OPC version 2 interface to the CX Server runtime used for communication to Omron PLCs Note that the OPC version 1 interface has been superseded and is not supported Users of CX Server OPC who have existing OPC clients or intend to use the OPC client functionality included may need some basic understanding of OPC OPC client developers will need a complete understanding of OPC and the interfaces defined For more information on OPC see the OPC Foundation web site at www opcfoundation org Starting CX OPC Server To launch the OPC Server 1 2 3 1 From the Start button select OPC Server from the section Programs MStart Omron CX Server OPC 2 The server will start Note the CX logo in the system tray f 15 18 3 Configure the server namespace by clicking the CX logo with the right mouse button and selecting Select CX Server Project from the popup menu About Cx OPC Server Help Server Info Select C Disconnect Iients Shutdown Page 10 OMRON Getting Siarted with CX Server OPC i To open an existing CX Server Project CDM file e Click the Open button and in the Open Project dialog navigate to the file you wish to open When you click the Open button the full path name of the selected file will be entered into the Project field Caution When sharing a CDM file with other applications it is i
33. rom script Page 15 OMRON Getting Siarted with CX Server OPC To add a Communications Control 1 2 3 1 GAStart 3 ee m Start the host application e g Microsoft Excel 97 Tip If you intend having a large number of components on your desktop it is recommended you run Excel in full screen mode Ensure the Control Toolbox and CX Server OPC toolbars are shown by selecting them from the View Toolbar menu Note In Visual Basic ensure the Toolbox is shown by selecting Toolbox from the View menu Ensure the host application is in design mode for example in Excel by clicking the Design Mode button in the Control Toolbox In the CX Server OPC toolbar click the Add OPC Communications Control button The Communications Control object is drawn in the default position top left hand corner of the work area Note In Visual Basic select the required component from the al Toolbox and draw a rectangle at the desired position Tip Double clicking the toolbox button inserts the component with a default size Using Drag and Drop the object can now be repositioned in the work area Note that the object will not visible in run mode Connecting the Communications Control to an OPC Server The first step is to create a project file OPC file or select one which has been previously created This file contains configuration data and symbolic definitions for the desired OPC items The following procedure takes you
34. roup As String ByVal Item As String ByVal Value As Variant ByVal BadQuality as Boolean If Item Myltem then Segment Value Else if Item MyOtherltem then Cells 1 1 Value End if End Sub Page 28 OMRON Getting Started with CX Server OPC Glossary of Terms ActiveX Application Bitmap Communications Driver GUI 1 0 type Icon Microsoft Excel Microsoft Windows Microsoft Word OLE OPC OPC Client OPC Group OPC Item A component technology developed by Microsoft allowing components to communicate with applications A software program that accomplishes a specific task Examples of applications are SYSMAC SCS SYSMAC CDM Microsoft Word and Microsoft Excel The representation of an image stored in a computer s memory Each picture element pixel is represented by bits stored in the memory The relevant communications management system for OMRON PLCs in conjunction with Microsoft Windows providing facilities for other SYSMAC software to maintain PLC device and address information and to communicate with OMRON PLCs and their supported network types Graphical User Interface Part of a program that interacts with the user and takes full advantage of the graphics displays of computers A GUI employs pull down menus and dialog boxes for ease of use Input Output type An attribute of a point that defines the origin and destination of the data for that point The data for a point can origi
35. sert the CD labelled CX Server OPC into your CD ROM drive If Autorun is enabled on your system the installation starts automatically otherwise see the README TXT on the CD ROM for instructions to launch manually 3 Follow the instructions on the screen By default CX Server OPC is installed in C Program Files Omron Additional Omron applications will be installed in a subfolder under Omron Common components are installed into C Program Files Common Files Omron Components To uninstall CX Server OPC When you uninstall your CX Server OPC project data remains intact uninstall only removes program files It is recommended however that you copy and move any projects you saved in the CX Server OPC folder Save a copy of your projects in another location on your hard drive such as your My Documents folder before uninstalling CX Server OPC 1 2 3 1 From the Start menu select Settings Control Panel Double click the Add Remove Programs Click the Install Uninstall tab From the list programs that you can remove select CX Server OPC Click Add Remove At the prompt select the Remove item and click Next and follow any further prompts 7 Wait until the uninstall program indicates that the process is complete Dapy The Help system and How to Access it CX Server OPC comes with a detailed help system At any time while using the software it is possible to get help on a particular point that is currently being worked on or
36. svarssaccnsanisearsaduetceauiedsanatecsudsdacdcacdbnasdedsdeadeussinvarsuandnnadee 6 System RegUrSmMEN S isinisi eie e Raa ai bee rai iniri nsise R Ei iiaeia 7 lastalling Gi Liesis iranan enan Tea a r ana ba auch sake oara ie e ae aE anaia eNi 8 The Help System and How tO ACCESS inicirati tasiti eideto rieien ian iaei 8 Enee a e E E E E E E E E EA 9 Using the OPC Server SOHSHSSSSSSHSSSSHSSHSHSSHSHSHSSHSHSHSSHSSHSSSSHSSHSHSHSSHSHSHSSSHSHSSHSSHSHSSHSSHHHSHHHSSESHSESS 10 MAE ios econo E E cs beasusesbeonwenSecvaveeusdctannisavsacestictteimedasaueieitianmataes 10 SRAM OPCS SOI VEN oa ssc ss 5525255 h00d eck set ivsacileasexesdehdasccccesvacedanascetssslescts teskshtedestbacaextechagianeearexe 10 Using with Third Panty OPC Cue rite ssid enreda aa a E e Ea EEE ERa aa Ent 11 Configuring the PC Tor remote COnmeChOtt inensis aisiari i eis 12 Using the OPC Client Components ssessscocsssseesoocsssooescoosessssesssesese 14 DEALE E E E T E E sad 14 Using the OPO SENEE ssrioeieiisiscn pioneri diieas ioien eiae nanpi rin aii naor iii ine iconii 15 Step 1 Viewing PLC data using Omron Graphical Controls ccccceesseceeesesneeeeeeeeeeeseseeeeeees 15 Step 2 Inserting PLO data in Celle scrissero eenia deneraat Eeer EE Eiaeia 18 Step 3 Adding Third Party Controls 2 s0 cc scccescessecsesssncstensstececescscdsaansnendectvendencteesedsieeesee 18 Oihar Be INS apra A A AEAEE sxzeissnayadeeguaeasueeeteaseecneck 19 Appendix A Component Propert
37. through the steps required to load an existing OPC file or create a new one 1 2 3 1 Right click on the OPC communications control In the popup menu select the OMRON CX OPC Communications Control Object option Note In Visual Basic the menu option is called Properties In the Communication Control Properties dialog select the Project file i To open an existing project OPC file e Click the Open button and in the Open Project dialog navigate to the file you wish to open When you click the Open button the full path name of the selected file will be entered into the Project field Page 16 OMRON 7 Getting Siarted with CX Server OPC ii To create a new project OPC file e Click the New button and in the Create Project dialog navigate to the directory in which you wish to create the new file Inthe File Name field enter the desired file name When you click the Save button the full path name of the new file will be entered into the Project field By default the Computer Name field shows the name of the local computer If the OPC Server is on a remote machine click Show All This may take a few moments depending on your network and operating system When complete the Computer Name list now shows all computer names Select the required computer and wait while connection is tested The Server name list shows all the OPC version 2 compliant servers registered on the computer listed
38. ue Shadow On False Shadow Off StateOColour E amp HOOO000FF amp The code determines the colour of the toggle switch in the 0 state Click the browse button to display the colour palette StateOText Text This is the text indicating the 0 state of the switch i e Off Stopped Halt etc State1 Colour E amp HOOOOFFO0 amp The code determines the colour of the toggle switch in the 1 state Click the browse button to display the colour palette Page 24 OMRON Getting Started with CX Server OPC Property Title Example Values Description State1Text Text This is the text indicating the 1 state of the switch i e On Running Start etc StateFont Arial This is the system name of the font used to display the sate of the switch ro button Use the browse button to display the font dialog Arial is the default StateFontColour E amp H000000008 The code determines the colour of the title font Click the browse button to display the colour palette Title Text This is the title that appears in the object TitlePosition 0 Top Determines where title will be placed in the object Above or below the scale 1 Bottom Top 230 Determines the position of the object from the top of the work area in pixels UnitPostion 0 Inside Positions the dial units inside or outside the scale 1 Outside UpdateRate 10 The value sets the frequency in seconds at which the data passing to or from the ob
39. uration is the minimum system requirements for running CX Server OPC IBM PC compatible 200 MHz Pentium processor e 64 Mbytes of RAM 30 Mbytes available hard disk space e 800 x 600 Super VGA display The Recommended minimum is IBM PC compatible 400 MHz Pentium II processor 64 Mbytes of RAM 50 Mbytes available hard disk space 1024 x 768 Super VGA display gt gt Operating Systems and Environments The operating systems on which this software will run are e Microsoft Windows 95 98 e Microsoft Windows NT 4 0 Service Pack 4 and later Containers in which this software will run are e Microsoft Excel 97 and later e Microsoft Visual Basic version 5 0 and later Interfaces to Hardware PLC Communications Interfaces to PLC hardware are via the CX Server runtime system Note that Temperature Controllers are not supported in this version Interfaces to Network Service Boards NSBs are achieved using Fins Gateway which is supplied and supported as part of the CX Server product Interfaces to Hardware Peripherals Interfaces to PC hardware printers graphics keyboard mouse Ethernet etc are supported by drivers installed and supported by Windows Page 7 OMRON Getting Started with CX Server OPC Installing Uninstalling CX Server OPC The CX Server OPC software is supplied on CD ROM and is installed easily from within Windows To install CX Server OPC 1 2 3 1 Close all programs 2 In
Download Pdf Manuals
Related Search