You can specify the item address that the database block accesses in the Process Database I/O Address setting. OPC I/O addresses typically consist of the server name or Prog ID, a group name, and the item ID or item name. The I/O address is specific to the driver. This setting is not case sensitive. OPC I/O addresses to items configured as data arrays require the syntax: servername;groupname;itemid,length;accesspath;[address] For more information about using this syntax, refer to Access Data Arrays with a Database Block. OPC I/O addresses to single items use the following syntax: SERVER_NAME;GROUP_NAME;ITEM_ID [;ACCESS_PATH] Where:
If you enter an I/O address that is not defined by a group and item ID, the driver performs the following operations if you enabled the Auto Create option:
If you have not enabled the Auto Create option, Process Database prompts you to start the Power Tool so that you can add the nonexistent group or item to your driver configuration. You can then continue configuring the database block. Refer to FIX DBB I/O Address Delimiter to determine valid delimiters that can be used in Process Database. Event I/O AddressesYou can enter the following special addresses into the I/O Address field of a Digital Output or Analog Output block to perform certain events:
Where NAME is the name of the server, group, or item you want to perform the event on. Special Address Events
Item Property I/O AddressesIn addition to event addresses, Text blocks also allow you to substitute the following address for any item in the driver:
Where NAME is the name of the item with the property you want to view. Property Address Functionality
Setting Up a Database Tag for Bit Read/Write Within an Analog Data (16-Bit Integer) ValueYou can configure a database Digital tag (DI/DO) and address an item that has Analog data. The following address formats allow you to access bits within an Analog data (16-bit integer) value, by adding a ';/' (semi-colon and forward slash) and specifying the Bit Offset at the end of the I/O address string. The Bit Offset has a range of 0 to 15. /0 = lowest significant bit within a 16-bit integer value /15 = most significant bit within a 16-bit integer value NOTE: All address formats shown must be entered without any spaces in between. Spaces are shown here for readability purposes only.
NOTE: The OPC Client driver attempts to resolve the address when an invalid syntax is used for a Digital database tag. This results in a 0 bit offset for the address. For example, entering Server1;Group1;Device1;40001 for a DI/DO block results in an address of Server1;Group1;Device1;40001;No Access Path;;/0. ExamplesExample 1: Using a Rockwell Software RSLinx Server
This specifies that the client will read an item Sign_Int_Array[20],L100 (with access path CLogix1) defined as an array in the server with the starting array subscript as 20 and the length of the array as 100 elements of 16-bit integer data. This will read data from the server for Sign_Int_Array, elements 20 to 119.
This specifies that the AI tag will read Analog data from the OPC Client Driver from Server RSLinxV22, Group SignIntGroup1, Item Sign_Int_Array[20], Access Path CLogix1, defined as an array in the client. You can also create a DI (Digital Input) tag with the following parameters:
This specifies that the DI tag will read Digital data from the OPC Client Driver from Server RSLinxV22, Group SignIntGroup1, Item Sign_Int_Array[20] / Bit Offset 0, access path CLogix1, defined as an array in the client. Example 2: Using a Siemens S7 SIMATIC NET OPC Server
This specifies that the client will read an item S7:[S7_300|VFD1|CP5613_5614(PROFIBUS)]DB1,INT10,3 (with no Access Path) defined as an array in the server with the starting array subscript as 10 and the length of the array as 3 elements of 16-bit integer data. This will read data for elements 10 to 12 from the server. You can specify the data type as Server so that the server returns the data with the correct data type for the array.
This specifies that the AI tag will read data from the OPC Client Driver from Server1, Group1, Item S7:[S7_300|VFD1|CP5613_5614(PROFIBUS)]DB1,INT10,3, Element 10 of the array, with no Access Path. You can also create a DI (Digital Input) tag with the following parameters:
This specifies that the DI tag will read Digital Data from the OPC Client Driver from Server1, Group1, Item S7:[S7_300|VFD1|CP5613_5614(PROFIBUS)]DB1,INT10;3; Element10 Bit Offset 2 of the array, with no Access Path. Example 3: Using a Schneider Automation OFS OPC Server
This specifies that the client will read an item MBT:1.2.3.4!400001 (with no Access Path), defined as a single item in the server. This will read data for element 1 for 4x-based holding registers (i.e., 400001 from the PLC). NOTE: In the Schneider Documentation for the current version of the server, the ItemID uses the 6-digit notation regardless of the settings in the PLC. Therefore, if you are reading 40001 (5-digit notation) from the PLC, you must enter it as 400001 in the ItemID configuration.
This specifies that the AI tag will read data from the OPC Client Driver from Server1, Group1, Item MBT:1.2.3.4!400001 (which will be 400001 from the PLC), with no Access Path. You can also create a DI (Digital Input) tag with the following parameters:
This specifies that the DI tag will read Digital data from the OPC Client Driver from Server1, Group1, Item MBT:1.2.3.4!400001 Bit Offset 15 (which will be 400001:15 from the PLC), no Access Path, defined as a single item in the client. NOTE: The OPC Client supports iFIX Digital Register Block (DR) offsets for accessing digital bit data for items defined as single items, or items defined as arrays, if used in the above mentioned formats for Bit Offsets for 16-bit integer data values only. Example 4: Using a DR tag to access digital offsets with an RSLinx ServerNOTE: Refer to Example 1 above for the syntax for entering the I/O address for a database point for accessing bit-offsets to Analog 16-bit Integer Data.
This specifies that the DR0 tag will read data from the OPC Client Driver from Server RSLinxV22,IntegerGroup1, Item Integer_Array [0], Bit Offset 0, and Access Path CLogix1, defined as an array of integers in the server. In iFIX Pictures, you can create a link to the tag DR0 and specify the offset to the tag to read the corresponding data values, as follows:
Any digital offset greater than 319 will return an error because the item is defined as an array of 20 elements each of which is a 16-bit integer. | Check out all the new features in the latest version of iFIX. Let iFIX help you increase efficiency and reduce costs. |
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Version 6x I/O drivers are normally installed using the iFIX installation disk for iFix versions 5.1 and earlier. If a disk is unavailable or if you are using iFix 5.5 and above, the attached standalone installer program can be used to install any 6.x drivers listed on the I/O Driver list. The Siemens TCP/IP Ethernet driver works in conjunction with KEPServerEX to exchange data between OPC clients and Siemens S7-200, S7-300, S7-400, and S7-1200 PLCs using the TCP/IP Ethernet protocol. The driver talks directly to the S7 PLC using a standard PC network interface card, and does not require additional software packages or libraries.
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Description
Running iFIX as a service may be desirable if for a SCADA system where Window users need to log in and out of the system, but iFIX to continues running.
Resolution
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To start iFIX automatically when Windows boots, add it to the Windows Startup Folder.
Instructions
- Configure the driver to run as a service.See the following articles for detailed instructions on setting up drivers:
Configuring 7.x Drivers to Run as a Service (Registering and Unregistering the Service) - Configuring 7.x drivers to run as a service
Configuring RSLinx , OPCDrv.exe, and iFIX to Run as Services - Configuring RSLinx , OPCDrv.exe, and iFIX to Run as ServicesÂ
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Configuring the ABR Driver to Run as a Service - Configuring ABR to run as a service
- To use the fixbackgroundservice, configure it to run as a service.In the SCU Task List, add the /SERVICE command line option to the fixbackgroundservice.exe, the line should read:% C:DYNAMICSFIXBACKGROUNDSERVER.EXE /SERVICE **** SEE NOTE BELOW
- Update the SCU to run as a service.In the SCU go to Configure->Local Startup, Check the box marked 'Continue running after Logoff'. To start the service automatically at boot up, also check the box, 'Start FIX at system boot'.
- In the SCU Task List
- remove workspace.exe and any 3rd party programs that are not designed to run as a service. The workspace.exe can be added to the startup folder for users that want it to start automatically when they log in.
- remove iocntrl.exe. Since the drivers are set up as services, iocntrl.exe is not needed anymore to start them. If it is left in the task list, the error of 'co-create instance failed' will occur whenever iFIX starts.
- Configure registry dependencies so that the hardware key drivers start before iFIX starts.From the Windows Run command enter regedt32. This will open the registry editor (use regedt32, regedit will not allow the edit of multi-line entries).
Go to the following key:
HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesFix
Double-click on the DependOnService value to edit, each item should be on a separate line :
Depend on service'
HKEY_LOCAL_MACHINESystemCurrentControlSetServices
Scroll to the 1st service to be controled and highlight it. If the right hand pane contains a DependOnService, double click it and add a service. If DependOnService is not present, add value DependOnService with type REG_MULTI_SZ. To add multiple values, each one should be on a separate line.
If using a HASP-M4 key, enter a line for 'CCFLIC0' (don't use the quotes - The 0 is a zero). If using a Sentinel/Rainbow key, enter a line for 'sentinel'.
If running iLicenseSvc (check in Administrative Tools -> Services check to see if this service is available), enter a line for 'iLicenseSvc'.
If running RSlinx, enter a line for 'rslinx'.
If running iLicenseSvc (check in Administrative Tools -> Services check to see if this service is available), enter a line for 'iLicenseSvc'.
If running RSlinx, enter a line for 'rslinx'.
Other notes
If there are schedules that print automatically, iFIX service cannot be run with the local system account, run the iFIX service under a user who has a printer configured in their profile. To do this go to the Windows Control Panel -> Administrative Tools -> Services. Choose the FIX service and go to its properties. On the Log On tab, choose a user account.
Windows does not map network drives until a user logs in. Therefore, if running iFIX as a service, all iFIX paths must be set to a local drive or unc paths.
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Assign the Enable Ctrl+Alt+Del application feature to the user that is logged in when iFIX is running as a service. Otherwise if a user logs out of the operating system while iFIX is running as a service, no one will be able to log back in to the operating system.
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Running iFIX as a service under Terminal Server is supported since iFIX 4.0 (except for the SampleSystem).
**** The /SERVICE on the task list command line with FIXBACKGROUNDSERVER.EXE one works for version prior to iFix 4.5. In versions iFix 4.5 and above the following processes are configured to automatically to run as a service when iFix is configured to run as a service and the FIXBACKGROUNDSERVER.EXE is automatically started so long as it is in the SCU tasks lists. That means it will be running in SESSION ID 0 with along with iFIX