Patient care devices, such as person support apparatuses and thermal control units, include one or more internal high speed networks, such as an Ethernet, for transmitting data between internal nodes or modules. A lower speed network may also be included with the Ethernet for redundantly transmitting some, but not all, types of data. Devices external to the patient care device can be granted limited access to the internal high speed network. Such devices may connect to the high speed network to utilize one or more user interfaces of the patient care device and/or to piggyback onto the patient care device's connection to an external local area network (e.g. a hospital LAN), or the patient care device's connection to yet another device. Some nodes may include web servers for serving up web pages of diagnostic information relevant to that node. The web servers are accessible via an external web browser.
