Unfortunately, the 1784-PKTX is the only DH+ interface supported by RSLinx Enterprise. The 2711P-RN6 module is essentially a 1784-PKTX card.
The 1784-U2DHP and 1784-PCMK are not supported by RSLinx Enterprise.
There is a workaround to use RSLinx Classic with FactoryTalk View, but it is not always simple.
Before we discuss that, please describe your application. Are you developing and testing an application that will be run on a PanelView Plus terminal, or one that will be run on a Windows XP computer ?