A board mis-insertion prevention circuit includes a first detection circuit, a second detection circuit, and a control module. The first detection circuit detects whether a board is in a first state and outputs a first detection signal when the board is in the first state. The second detection circuit detects whether the board is in a second state when the board is not in the first state, and outputs a second detection signal when the board is in the second state. The control module receives the first detection signal or the second detection signal and can allow or disconnect a power supply to the board according to the first detection signal or the second detection signal.

A controller is described with an adjacent electronic display which allows users to input building plans, and to design where devices (e.g., equipment and sensors) are to go. The controller has access to databases of the devices including wiring diagrams and protocols, such that the controller can automatically create a wiring diagram that can be used to wire the building and the controller. The adjacent display can be moved to show controller wiring, while the display shows a wiring diagram which describes a diagram of the controller wiring including devices that are connected, and wiring information about the devices.

A controller is described with an adjacent electronic display which allows users to input building plans, and to design where devices (e.g., equipment and sensors) are to go. The controller has access to databases of the devices including wiring diagrams and protocols, such that the controller can automatically create a wiring diagram that can be used to wire the building and the controller. The adjacent display can be moved to show controller wiring, while the display shows a wiring diagram which describes a diagram of the controller wiring including devices that are connected, and wiring information about the devices.

A controller is described with an adjacent electronic display which allows users to input building plans, and to design where devices (e.g., equipment and sensors) are to go. The controller has access to databases of the devices including wiring diagrams and protocols, such that the controller can automatically create a wiring diagram that can be used to wire the building and the controller. The adjacent display can be moved to show controller wiring, while the display shows a wiring diagram which describes a diagram of the controller wiring including devices that are connected, and wiring information about the devices.

A controller is described with an adjacent electronic display which allows users to input building plans, and to design where devices (e.g., equipment and sensors) are to go. The controller has access to databases of the devices including wiring diagrams and protocols, such that the controller can automatically create a wiring diagram that can be used to wire the building and the controller. The adjacent display can be moved to show controller wiring, while the display shows a wiring diagram which describes a diagram of the controller wiring including devices that are connected, and wiring information about the devices.

Tools and techniques are described to create a controller wiring board. A user, using a user interface associated with a controller, can determine which devices will be attached to a controller. The features of the devices may be already known by the controller. The controller can change wiring terminal types depending on the requirements of the devices wired to the controllers. In some embodiments, a device is wired to a module associated with the controller. The controller can signal to the module to modify its wiring terminal to match the needs of the device to be wired to that location.

Tools and techniques are described to create a controller wiring board. A user, using a user interface associated with a controller, can determine which devices will be attached to a controller. The features of the devices may be already known by the controller. The controller can change wiring terminal types depending on the requirements of the devices wired to the controllers. In some embodiments, a device is wired to a module associated with the controller. The controller can signal to the module to modify its wiring terminal to match the needs of the device to be wired to that location.

A float detector includes a latch and a float detection circuit. The latch includes a latch output and an input/output (I/O) terminal. The I/O terminal is coupled to an input terminal. The float detection circuit includes a detection input, a drive output, and a float detection circuit. The detection input is coupled to the latch output. The drive output is coupled to the I/O terminal. The float detector is configured to provide a drive signal at the drive output, and determine that the input terminal is floating based on a latch output signal received at the detection input responsive to the drive signal.

A float detector includes a latch and a float detection circuit. The latch includes a latch output and an input/output (I/O) terminal. The I/O terminal is coupled to an input terminal. The float detection circuit includes a detection input, a drive output, and a float detection circuit. The detection input is coupled to the latch output. The drive output is coupled to the I/O terminal. The float detector is configured to provide a drive signal at the drive output, and determine that the input terminal is floating based on a latch output signal received at the detection input responsive to the drive signal.

A module is described which is slidably attachable to a controller. Resource wires are connected to the module through resource connectors. The module has a circuit board that can perform actions. The module can modify the function of its resource connectors. These modifications may be to meet the requirements of resources that are to be connected to the module. The module may be able to register, by means of a signal, when a correct resource wire is attached to the module. The results of such monitoring may be displayed on a screen associated with the controller.