Use a macro to call your VBA routine.
In the macro place the following code
Pause 10
VBAExec VBA_ROUTINE_NAME
Call the macro in whatever object/event you are currently calling the VBA routine from.
By the way, if you then want to change it, its super easy to change (way easier than on a PLC) and you don't even need RSView Works to do it. A macro can be edited from any text editor such as Notepad or Wordpad.