Applies To:
  • CitectSCADA 7.00
  • CitectHMI 7.00

Summary:
When the v7 Web Client is running on a PC that has CitectSCADA v6.1 installed, the Process Analyst ActiveX control from v6.1 is displayed instead. The difference can been seen in the “Add New Pens” dialog as the v6.1 Process Analyst does not have the new Cluster field introduced in v7.0. Also, if a project is a multi-cluster system, no trend data is shown in the Process Analyst as the v6.1 Process Analyst did not support this feature.  

Solution:
Only one version of an ActiveX control is registered on one PC at a time. If a PC has an earlier version of CitectSCADA installed, the ActiveX control from that version has already been registered.

When the Web Client is started and sees that a PC already has a Process Analyst ActiveX control from v6.1, it will use the local control and ignore the new one from v7.

To allow the v7 Web Client to use its matching v7 Process Analyst control (to support clustering), the v6.1 Process Analyst ActiveX control will have to be unregistered. You should unregister the v6.1 Process Analyst control before running the v7 Web Client. If you have already run the v7 Web Client, then you will need to uninstall it (via Add / Remove Programs) first.

By unregistering the v6.1 Process Analyst this will mean that if a user wants to go back and run a v6.1 project, then the Process Analyst will no longer function correctly. No trend data will be displayed and searching pens may cause an error. Re-registering the v6.1 Process Analyst ActiveX control will resolve this issue.

To un-register v6.1 Process Analyst ActiveX control, at Command Prompt:
    "regsvr32 /u “%system%\Program Files\Common Files\Citect\Analyst.dll”

To re-register v6.1 Process Analyst ActiveX control, at Command Prompt:
    "regsvr32 “%system%\Program Files\Common Files\Citect\Analyst.dll”

 

Keywords:
Webclient Process Analyst ActiveX Control Webserver web cluster  

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