Object-oriented programmable controller

• US 6,868,538 B1
• Filed: 05/02/2000
• Issued: 03/15/2005
• Est. Priority Date: 04/12/1996
• Status: Expired due to Fees

• Current Assignee: Fisher-Rosemount Systems Incorporated (Emerson Electric Company)
• Original Assignee: Fisher-Rosemount Systems Incorporated (Emerson Electric Company)
• Inventors: Stevenson, Dennis L., Nixon, Mark J., Hammack, Stephen G., Ott, Michael G.
• Primary Examiner(s): ZHEN, WEI Y
• Application Number:
  US09/563,212
• Time in Patent Office: 1,778 Days
• Field of Search: 717/1, 717/2, 717/3, 717100-109, 700/83, 700/86, 700/17
• US Class Current: 717/100
• CPC Class Codes: G05B 2219/31336 Store machines performance; use it to control future machining
• CPC Class Codes: G05B 2219/31472 Graphical display of process
• CPC Class Codes: G05B 23/0216 Human interface functionality, e.g. monitoring system providing help to the user in the selection of tests or in its configuration
• CPC Class Codes: G06F 8/34 Graphical or visual programming

Abstract

An apparatus having a programmable processor and a memory for performing a plurality of user-selectable control functions includes a database for storing a plurality of items associated with each of the control functions. The items include, for each function, at least one procedure for performing an action associated with the control function and a specification of at least one state associated with the control function. The apparatus further includes software routines stored on the memory and adapted to be executed by the processor that facilitate selection of a procedure in the database, that access the database and cause performance of the selected procedure to achieve the state specified therein, and that monitor at least one resource associated with the action of the procedure and, based thereon, determine whether the specified state has been achieved.

Claims

1. A programmable apparatus for performing a plurality of user-selectable control functions, the apparatus comprising:

a. a database for storing a plurality of items associated with each of the control functions, the items including, for each function;

i. at least one procedure for performing a plurality of actions associated with the control function;

ii. a specification of at least one state associated with each procedure;

b. means facilitating selection of a procedure in the database;

c. means responsive to the selection for accessing the database and causing performance of the selected procedure to achieve the states specified therein; and

d. means for monitoring at least one resource associated with the actions of the procedure and, based thereon, determining whether the specified states have been achieved.

2. The apparatus of claim 1 wherein the performance means is responsive to executable instructions causing it to respond, in causing performance of the action, to the state determined by the monitoring means.

3. The apparatus of claim 1 wherein the items further include a list of resources associated with the action, the performance means being configured to establish control connections to the listed action resources to perform the action.

4. The apparatus of claim 1 wherein the items further include a list of resources associated with the state, the monitoring means being configured to establish monitoring connections to the listed state resources to determine the state.

5. The apparatus of claim 4 comprising:

a. an input/output module for connection to at least one input/output point on a controlled machine; and

b. a computer memory comprising a plurality of registers and flags for containing data associated associated with the action, the state resources including the at least one input/output point and the registers and flags.

6. The apparatus of claim 1 wherein the means facilitating selection and the means responsive to the selection comprise:

a. compiler;

b. a series of high-level instructions including instructions invoking the at least one procedure; and

c. a database manager, responsive to procedure-invoking instructions, for locating the at least one procedure;

the compiler compiling the high-level instructions and the procedure into a machine-executable run-time program.

7. The apparatus of claim 6, further comprising memory means for storing the run-time program.

8. The apparatus of claim 6, wherein the run-time program accesses, during execution, at least one state item by means of the database manager.

9. The apparatus of claim 6 wherein the items further include a template specifying at least one performance characteristic, the monitoring means evaluating the resource against the at least one performance characteristic during performance of the action, the run-time program accessing, during execution, at least one performance-characteristic item by means of the database manager.

10. The apparatus of claim 6 further comprising a programming interface for accepting the high-level instructions and the items, the programming interface communicating with the database manager so as to cause storage of the items in the database.

11. A programmable apparatus for performing a plurality of user-selectable control functions the apparatus comprising:

a. a database for storing a plurality of items associated with each of the control functions, the items including, for each function;

i. at least one procedure for performing an action associated with the control function;

ii. a specification of at least one state associated with the control function; and

iii. a template specifying at least one performance characteristic, the monitoring means evaluating the resource against the at least one performance characteristic during performance of the action;

b. means facilitating selection of an action in the database;

c. means responsive to the selection for accessing the database and causing performance of the selected action; and

d. means for monitoring a resource associated with the action and, based thereon, determining the state specified in the database.

12. The apparatus of claim 11, wherein:

a. the performance characteristic comprises a plurality of parameter limit value ranges; and

b. the template specifies a limit procedure associated with at one of the limit value ranges, the performance means causing performance of the limit procedure if the parameter value falls within the limit value range.

14. The apparatus of claim 12 wherein the items further include historical parameter values associated with completions of the action or performances of the limit procedure.

15. The apparatus of claim 14 wherein the monitoring means is configured to dynamically update the historical parameter values upon completion of an action or performance of the limit procedure.

13. An apparatus having a programmable processor and a memory for performing a plurality of user-selectable control functions, the apparatus comprising:

a. a database for storing a plurality of items associated with each of the control functions, the items including, for each function;

i. at least one procedure for performing an action associated with the control function;

ii. a specification of at least one state associated with the control function;

b. a first software routine stored on the memory and adapted to be executed by the processor for facilitating selection of a procedure in the database;

c. a second software routine stored on the memory and adapted to be executed by the processor that responds to the selection for accessing the database and causing performance of the selected procedure to achieve the state specified therein; and

d. a third software routine stored on the memory and adapted to be executed by the processor for monitoring at least one resource associated with the action of the procedure and, based thereon, determining whether the specified state has been achieved.