[Zope] XML-RPC

I am trying to develop a web based interface to automation equipment (Allen Bradley plc's in this case) to use for an operator interface. I am using SVG to develop graphics and want to use javascript to manipulate the graphics based on data from the plc. I am looking for a way to pull more data from the server without having to reload the page. My question is will XML-RPC allow this. Or does Zope have some other mechanism that would allow this. Thanks for any help.