WebVisu Client

I understood your question like this:

• There are 9 visualization pages (e.g. visu1,..., visu9) in one PLC project
• There are 9 WR21, which should display automatically different pages when starting. You don't want to select the page manually.
  1. WR21 should display visu1
  2. WR21 should display visu2
        :                      :
  9. WR21 should display visu9

I found the following in the CoDeSys Docu: Chapter: Configuring and starting a display variant 

You just add multiple "WebVisu" objects to the PLC project, where you can define different start pages. I attache a example project with 2 "WebVisu" objects. URL's of example project.

• http://<IP-of-ctrlX>:8080/webvisu-a.htm 
• http://<IP-of-ctrlX>:8080/webvisu-b.htm