Help File Freelance - Parameter value passing from MS Excel to CBF (via OPC)

Transcription

1 Freelance Distributed Control System Help File Freelance - Parameter value passing from MS Excel to CBF (via OPC) The aim of this sample project is to show how we can read or write freelance data using MS Excel through Freelance OPC server. In this sample project 4 variables were read and 4 variables were written from MS Excel to Freelance enginering frame - CBF. The followings steps explain about, how we can use this example: 1. Import the sample project file in Control Builder F 2. Start the Freelance OPC server Programs->ABB Industrial IT->Freelance V9.2SP1->Configure 3. Type the Resource ID of OPC server (in this ex. 100) in New resource ID field and click Add, as shown below. 4. Next step is to configure OPC Tunnel. Programs->ABB Industrial IT->Freelance->OPC Tunnel->Configurator. 5. Type in DA Server and AE Server field as shown below

2 6. Next step is to check whether OPC server and Gateway is working. Otherwise once again restart ABB OPC Tunnel. 7. Then open the project in Control Builder F and commissioning mode. Click Configuration button, then the current status of controller, OPC server and Gateway will be displayed. Load the program into controller, gateway to show the status as shown below. 8. Then open the excel file OPCClient_freelance.xls. It will be as shown below

3 9. In this file Name of OPC Server and IP address in field B4 and B5 respectively has to be specified as configured in Control Builder F 10. In this example as mentioned earlier we have configured to read 4 values and write 4 values as shown above. These variables were configured in Control Builder F Tag list. 11. At the bottom there are buttons to Connect and Disconnect OPC server to this excel file. 12. If we click Connect the excel file will link to the Freelance OPC Server as shown below. 13. Now the buttons Disconnect, Read, and Write will be enabled.

4 14. Once Excel file connected to the OPC Server, if there is any change in variable values READ01 to READ04 this file will read those values from OPC server and will update in D9 to D12 respectively. 15. The Read button is used to read the current values when we click that button. It will be updated in F9 to F If we want to pass values from Excel to Freelance, then enter the required values for WRITE01 to WRITE04 in F13 to F16 and press Write button. The values will be passed onto freelance and it will be as shown below in D13 to D Click Disconnect button to delink the connection to OPC Server. 18. This example can be used for any real time applications. Necessary changes in the excel code has to be made for that. The VB code is not protected and the user can make the necessary modifications. 19. The following code is used in excel. Necessary comments were placed for easy understanding and modifications. Option Explicit ' every variable has to be declared Option Base 1 ' every Array starts on Index 1 Private MyOPCServer As OPCServer Private WithEvents MyOPCGroup As OPCGroup Private MyOPCItems() As OPCItem Private Sub cmdconnect_click() Set MyOPCServer = New OPCServer 'connect the OPC Server Call MyOPCServer.Connect(Cells(4, 2)) 'add one OPC Group Set MyOPCGroup = MyOPCServer.OPCGroups.Add("Gruppe1") 'apply for DataChange MyOPCGroup.IsSubscribed = True MyOPCGroup.UpdateRate = 500

5 'add Items ReDim MyOPCItems(8) For i = 1 To 8 Set MyOPCItems(i) = MyOPCGroup.OPCItems.AddItem(Cells(8 + i, 2), 8 + i) 'set buttons cmddisconnect.enabled = True cmdread.enabled = True cmdwrite.enabled = True cmdconnect.enabled = False Private Sub cmddisconnect_click() 'disconnect the OPC Server Call MyOPCServer.Disconnect Set MyOPCServer = Nothing 'set buttons cmddisconnect.enabled = False cmdread.enabled = False cmdwrite.enabled = False cmdconnect.enabled = True Private Sub cmdread_click() Dim SHandles(4) As Long 'parameter value Dim Values() As Variant 'return value Dim Errors() As Long 'return value Dim Qual As Variant 'return value Dim TS As Variant 'return value 'save ServerHandles SHandles(1) = MyOPCItems(1).ServerHandle SHandles(2) = MyOPCItems(2).ServerHandle SHandles(3) = MyOPCItems(3).ServerHandle SHandles(4) = MyOPCItems(4).ServerHandle Call MyOPCGroup.SyncRead(OPCCache, 4, SHandles, Values, Errors, Qual, TS) 'fill the cells with the read values For i = 1 To 4 Cells(8 + i, 5) = Values(i) 'column "read" Cells(8 + i, 8) = Qual(i) 'column "quality"

6 Cells(8 + i, 9) = TS(i) 'column "timestamp" Private Sub cmdwrite_click() Dim SHandles(4) As Long 'parameter value Dim Values(4) As Variant 'parameter value Dim Errors() As Long 'return value 'save ServerHandles SHandles(1) = MyOPCItems(5).ServerHandle SHandles(2) = MyOPCItems(6).ServerHandle SHandles(3) = MyOPCItems(7).ServerHandle SHandles(4) = MyOPCItems(8).ServerHandle 'find out the values which are written into the following cells (line 11+12, column F) 'this values should be writen into PLC For i = 1 To 4 Values(i) = Cells(12 + i, 6) If Values(i) = "" Then Values(i) = 0 Call MyOPCGroup.SyncWrite(4, SHandles, Values, Errors) Private Sub MyOPCGroup_DataChange(ByVal TransactionID As Long, _ ByVal NumItems As Long, _ ClientHandles() As Long, _ ItemValues() As Variant, _ Qualities() As Long, _ TimeStamps() As Date) For i = 1 To NumItems Cells(ClientHandles(i), 4) = ItemValues(i)

7 For more information please contact: ABB Pte Ltd Singapore Phone: ABB AB Västerås, Sweden Phone: +46 (0) ABB China Ltd Beijing, China Phone: +86 (0) ABB Automation LLC Abu Dhabi, United Arab Emirates Phone: +971 (0) processautomation@ae.abb.com ABB Inc. Wickliffe, Ohio, USA Phone: industrialitsolutions@us.abb.com ABB Automation GmbH Mannheim, Germany Phone: marketing.control-products@de.abb.com ABB S.P.A. Sesto San Giovanni (MI), Italy Phone: controlsystems@it.abb.com Note: We reserve the right to make technical changes or modify the contents of this document without prior notice. With regard to purchase orders, the agreed particulars shall prevail. ABB does not accept any responsibility whatsoever for potential errors or possible lack of information in this document. We reserve all rights in this document and in the subject matter and illustrations contained therein. Any reproduction, disclosure to third parties or utilization of its contents - in whole or in parts - is forbidden without prior written consent of ABB. DISCLAIMER OF WARRANTY & LIABILITY The software and the accompanying documents are without warranties as to performance or merchantability or any other warranties whether expressed or implied. To the extent not prohibited by law, in no circumstances shall ABB be liable to User or any other third party for any loss or damage (including, without limitation, damage for loss of business or loss of profits) arising directly or indirectly from User's use of or inability to use the software and the accompanying documents. The User assumes all risk and liability in connection with the use of the software and the accompanying documents. Copyright 2013 ABB. All rights reserved 3BSE en