US 7,742,492 B2 · Real time data expansion for distributed I/O

Abstract

The present exemplary embodiment relates to industrial machine control and corresponding communication protocols. In one embodiment, the machine control communication protocol is Distributed I/O that has Extended Data Transfer (EDT) capability. It finds particular application with expanding the underutilized bandwidth of the EDT to gather/send secondary input and output data within a control system. In one aspect, a system communicates data from a network to an input/output module. An adapter module receives data. The adapter module includes a network data component that receives data from a network including an output data component that receives standard data and an output expansion data component that receives cyclic EDT data. A Distributed bus data component receives data from the network data component. A Distributed extended data transfer (EDT) module receives data from the adapter module via the Distributed bus data component, wherein standard output data is communicated utilizing a standard data scan, and expansion output data is communicated utilizing a cyclic EDT protocol.

Claims20

Dependent claims

A system that communicates data from a network to an input/output module, comprising:

an adapter module that receives data, the adapter module includes:
a network data component that receives data from the network including,
an output data component that receives standard data;
and
an output expansion data component that receives cyclic extended data transfer data, including a lower half and an upper half of an attribute index number, and
a Distributed bus data component that receives data from the network data component, the Distributed bus data component includes,
an output data component that receives standard data from the output component contained in the network data component;
and
an output expansion data component that receives cyclic extended data transfer data from the output expansion data component contained in the network data component, wherein the lower half of the attribute index number is received, echoed to the extended data transfer module and verified and the upper half of the attribute index number is received, echoed to the extended data transfer module and verified,
a Distributed extended data transfer module that receives data from the adapter module via the Distributed bus data component, wherein standard output data is communicated utilizing a standard data scan, and expansion output data is communicated utilizing a cyclic extended data transfer protocol.

7 more elements

A system that communicates data from an input/output module to a network, comprising:

a Distributed extended data transfer module that receives data from one or more sources, the Distributed extended data transfer module includes,
an input data component that receives standard data;
and
an input expansion data component that receives expansion data, including a lower half and an upper half of an attribute index number, and
an adapter module that receives data from the distributed extended data transfer module, wherein standard output data is communicated utilizing a standard data scan, and expansion output data is communicated utilizing a cyclic extended data transfer protocol, the adapter module includes:
a Distributed bus data component that receives data from the Distributed extended data transfer module, the Distributed bus data component includes,
an input data component that receives standard data from the input component contained in the Distributed extended data transfer module;
and
an input expansion data component that receives data from the input expansion data component contained in the Distributed extended data transfer module, wherein the lower half of the attribute index number is received, echoed to the extended data transfer module and verified and the upper half of the attribute index number is received, echoed to the extended data transfer module and verified,
a network data component that receives data from the Distributed bus data component and communicates it to a network, the network data component includes,
an input data component that receives standard data from the input data component contained in the Distributed bus data component;
and
an input expansion data component that receives expansion data from the input expansion data component contained in the Distributed bus data component;
and
a cyclic extended data transfer communication status component that schedules data received by the input expansion data component.

12 more elements

Dependencies are inferred from the claim text.

Real time data expansion for distributed I/O

Life of this patent

Real time data expansion for distributed I/O

Life of this patent

Abstract

Claims20