Controllers with integrated power over ethernet network switches

A network power switching arrangement comprising:

• a plurality of heating, ventilation, and air conditioning (HVAC) controllers;
• and
• wherein:
• each HVAC controller comprises a net switch having a power sourcing equipment port and a powered device port;
• a cable connects a power sourcing equipment port of a net switch of one HVAC controller to a powered device port of a net switch of another HVAC controller,
• wherein the network is a building local area network (BLAN),
• wherein the BLAN is secured by incorporating a Fox protocol;
• and
• if the net switch of the other HVAC controller loses power, current can be provided by the power sourcing equipment port of the net switch of one HVAC controller via the cable to the powered device port of the net switch of another HVAC controller,
• wherein at least one of the two or more HVAC controller is connected to an internet via a Java Application Control Engine (JACE™).

A method of implementing a failsafe network switch of a heating, ventilation, and air conditioning (HVAC) controller, comprising:

• connecting, with a cable, a first port for a network switch of one HVAC controller to a second port for a network switch of another HVAC controller creating a building local area network (BLAN) from HVAC controllers,
• wherein the BLAN is secured by incorporating a Fox protocol;
• and
• wherein:
• a first port for a network switch of an HVAC controller is a power sourcing equipment port;
• a second port for a network switch of an HVAC controller is a powered device port;
• an HVAC controller comprises a power input terminal;
• if power is present at the power input terminal of the network switch of one HVAC controller and power is absent at the power input terminal of another HVAC controller, then power can be provided via the cable from the power sourcing equipment port for a network switch of the one HVAC controller to a powered device port for a network switch of the another HVAC controller having an absence of power at the power input terminal;
• and
• an additional one or more network switches of one or more HVAC controllers can be daisy chained in connection of power sourcing equipment ports and powered device ports with a cable between every two of network switches so as to provide power from a network switch to one or more network switches without power,
• wherein at least one of the two or more HVAC controller is connected to an internet via a Java Application Control Engine (JACE™).