Programmable logic controller software with embedded class logic and alarm/shutdown functionality

A computer-implemented method for execution in a programmable logic controller, the method comprising:

• determining whether a physical input to the programmable logic controller is analog or discrete;
• responsive to the physical input being analog, inputting a set of user analog parameters;
• responsive to the physical input being discrete, inputting a set of user discrete parameters by:
• enabling user input of a class type;
• enabling user input of an event type;
• enabling user input of an input contact type;
• and
• enabling user input of a text description;
• and
• storing the user analog and discrete input parameters in a user parameter data table.

A computer-implemented method for execution in a programmable logic controller, the method comprising:

• determining whether a physical input to the programmable logic controller is analog or discrete;
• responsive to the physical input being analog, inputting a set of user analog parameters;
• responsive to the physical input being discrete, inputting a set of user discrete parameters;
• storing the user analog and discrete input parameters in a user parameter data table;
• enabling user input of a set of user alarm/shutdown parameters by:
• enabling user input of a class type;
• enabling user input of an event type;
• and
• enabling user input of a text description.

A computer-implemented method for execution in a programmable logic controller in response to a set of user-defined parameters, the method comprising:

• reading a physical input of the programmable logic controller;
• responsive to said physical input being discrete, aligning the polarity of the discrete input according to a user input contact type parameter to generate a healthy/unhealthy state;
• responsive to said physical input being analog, scaling the input according to a user input scaling parameter and comparing the scaled input to at least one user input setpoint parameter to generate a healthy/unhealthy state;
• determining whether said physical input is in fault by processing the physical input using embedded class logic for the user input class;
• and responsive to said physical input being in fault, performing an operation from a group of operations consisting of an alarm and a shutdown according to a user alarm/shutdown parameter.

A computer-readable medium having computer-readable code embodied therein for execution in a programmable logic controller, the computer-readable medium comprising:

• computer-readable program code modules configured to determine whether a physical input is analog or discrete;
• computer-readable program code modules configured to, responsive to the physical input being analog, enable user input of a set of analog parameters;
• said computer-readable program code modules configured to enable user input of the set of analog parameters further comprises:
• computer-readable program code modules configured to enable user input of a class type;
• computer-readable program code modules configured to enable user input of an event type;
• computer-readable program code modules configured to enable user input of at least one scaling value;
• computer-readable program code modules configured to enable user input of a text description;
• and
• computer-readable program code modules configured to enable user input of at least one setpoint;
• and
• computer-readable program code modules configured to, responsive to the physical input being discrete, enable user input of a set of discrete parameters;
• and
• computer-readable program code modules configured to store the user analog and discrete input parameters in a user parameter data table.

A computer-readable medium having computer-readable code embodied therein for execution in a programmable logic controller, the computer-readable medium comprising:

• computer-readable program code modules configured to determine whether a physical input is analog or discrete;
• computer-readable program code modules configured to, responsive to the physical input being analog, enable user input of a set of analog parameters;
• computer-readable program code modules configured to, responsive to the physical input being discrete, enable user input of a set of discrete parameters;
• said computer-readable program code modules configured to enable user input of the set of discrete parameters further comprises:
• computer-readable program code modules configured to enable user input of a class type;
• computer-readable program code modules configured to enable user input of an event type;
• computer-readable program code modules configured to enable user input of an input contact type;
• computer-readable program code modules configured to enable user input of a text description;
• and
• computer-readable program code modules configured to store the user analog and discrete input parameters in a user parameter data table.