# US 9,736,020 B2 · Master device of process field bus decentralized periphery

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- Number: US 9,736,020 B2
- Document ID: US9736020B2
- Status: Granted
- Kind: B2
- Application number: 14/264,908
- Filed: 2014-04-29
- Published: 2014-11-13
- Granted: 2017-08-15
- Earliest claimed: 2013-05-13
- Assignees: Lsis Co., Ltd.
- Applicants: Lsis Co., Ltd.
- Inventors: Duk Yun Cho
- Web page: https://patentgrep.com/patent/US9736020B2

## CPC

- H04L 41/0816: the condition being an adaptation, e.g. in response to network events
- G05B 19/0421: {Multiprocessor system}
- H04L 12/40019: {Details regarding a bus master}
- H04L 12/40078: {Bus configuration (home automation networks H04L12/2803; arrangements for maintenance or administration H04L41/00)}
- G05B 2219/15012: Configuration software for networks
- G05B 2219/2231: Leader-follower
- G05B 2219/25021: Profibus
- G05B 2219/33112: Configuration software for network
- H04L 2012/40221: {Profibus}
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G)

## Abstract

The master device of Profibus DP according to the present disclosure automatically configures network by performing a communication with a plurality of slave devices connected through Profibus, the device including a Profibus communication module configured to perform a communication with a plurality of slave devices, an imaginary network configuration information storage configured to be stored in advance with imaginary network configuration information, a network configuration information storage configured to be stored with network configuration information, and a Profibus master state machine configured to obtain network configuration information by performing a communication with the plurality of slave devices in response to the imaginary network configuration information stored in the imaginary network configuration information storage, to store the obtained network configuration information in the network configuration information storage, and to perform a communication with the plurality of slave devices in response to the stored network configuration information.

## Claims

### Claim 1

A master device of Profibus DP (Process Filed Bus Decentralized Periphery), the master device comprising:
first storage in which imaginary network configuration information is pre-stored;
second storage for storing network configuration information;
a Profibus master state machine with circuitry for:
transmitting a diagnosis message to a plurality of slave devices based on the imaginary network configuration information stored in the first storage in order to receive a response message;
transmitting a configuration information request message to the plurality of slave devices after receiving the response message in order to receive the network configuration information;
obtaining the network configuration information by performing communication with the plurality of slave devices based on the same imaginary network configuration information stored in the first storage that was used to transmit the diagnosis message;
storing the obtained network configuration information in the second storage; and
communicating with the plurality of slave devices based on the network configuration information stored in the second storage;
a slave information collector for requesting network configuration information related to the plurality of slave devices from the Profibus master state machine and collecting the requested network configuration information when the network configuration information is not stored in the second storage; and
a Profibus communication interface with circuitry for performing communication with the plurality of slave devices under control of the Profibus master state machine,
wherein the Profibus master state machine obtains the network configuration information by performing communication with the plurality of slave devices when there is an information collection request from the slave information collector and provides the slave information collector with the obtained network configuration information and stores the obtained network configuration information in the second storage.

### Claim 2 (depends on 1)

The master device of claim 1, wherein the slave information collector is further for:
determining whether the network configuration information is stored in the second storage and;
requesting the network configuration information related to the plurality of slave devices from the Profibus master state machine when the network configuration information is not stored in the second storage.

### Claim 3 (depends on 1)

The master device of claim 1, further comprising a configuration tool communication module with circuitry for performing communication with a configuration tool,
wherein the slave information collector is further for requesting the Profibus master state machine to obtain the network configuration information related to the plurality of slave devices when a network auto configuration command is input from the configuration tool communication interface.