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Boolean logic function block

A technology of logic functions and function blocks, applied in the field of function blocks, can solve the problems of complex ladder diagram or function block diagram vision, difficulty in logic, difficulty in debug logic function design of visual complexity, etc.

Active Publication Date: 2005-02-02
FISHER-ROSEMOUNT SYST INC
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] Ladder or Function Block Diagrams can become very visually complex when designing more complex logic functions
Due to the visual complexity of the graph, it can be difficult for humans to understand and / or appreciate the underlying logic of the graph
The visual complexity of graphics also makes it difficult to debug logic function design

Method used

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  • Boolean logic function block
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Examples

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Embodiment Construction

[0023] Processing plant overview

[0024] figure 1 is a block diagram of an example process plant 10 including one or more nodes 12 , 14 , 16 , 18 and 20 . exist figure 1 In the example process plant 10, each of the nodes 12, 14, and 16 includes a connection via an input / output (I / O) device 24 that may be, for example, a Foundation Fieldbus (Foundation Fieldbus) interface, a HART interface, etc. Process controllers 12a, 14a, 16a to one or more field devices 22 and 23. Controllers 12a, 14a, and 16a are likewise connected to a network 30 that may include, for example, one or more buses, a wired local area network (LAN), a wireless LAN, a wide area network (WAN), an intranet, etc. One or more hosts in nodes 18 and 20 or operator workstations 18a and 20a. Operator workstation nodes 18 and 20 are often located at the Control room or other less austere environment with easy access for controller operators.

[0025] In general, the workstations 18a and 20a of the nodes 18 and...

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Abstract

A technique for configuring a Boolean logic function block displays a matrix associated with the Boolean logic function block on a display screen of a computer. A programmer may then enter configuration data into the matrix to configure the Boolean logic function block. The matrix may include a plurality of cells, some of which correspond to variables to be used in generating a function block output, and the programmer may enter configuration data into the cells. The configuration data entered into cells are indicative of logic functions to which the variables corresponding to the cells are to be provided as inputs.

Description

technical field [0001] The present disclosure generally relates to function blocks for process plants, and more particularly to designing, debugging, and executing Boolean logic functions associated with process plants. Background technique [0002] Process control systems, such as those used in chemical, petroleum, or other processes, typically include communication with at least one host or operator workstation and one or more field devices via analog, digital, or combined analog / digital buses or lines One or more process controllers connected. The field devices, which may be, for example, valves, valve positioners, switches and transmitters (eg, temperature, pressure and flow rate sensors), are used to perform functions such as opening or closing valves and measuring process parameters in the process plant. The process controller receives signals indicative of process measurements made by the field devices and / or other information related to the field devices, uses the s...

Claims

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Application Information

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IPC IPC(8): G05B19/05
CPCY10S715/967G05B19/056G05B2219/13146G05B2219/13131H03K19/177G06F9/00
Inventor 肯特·A·伯尔肯尼思·D·克里沃斯海因加里·K·劳
Owner FISHER-ROSEMOUNT SYST INC
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