System and method for controlling bus-networked devices via an open field bus

Patent metadata

Field	Value
Publication number	US-9164934-B2
Application number	US-201414555607-A
Country	US
Kind code	B2
Filing date	Nov 27, 2014
Priority date	Jul 6, 2007
Publication date	Oct 20, 2015
Grant date	Oct 20, 2015

Abstract

A system for controlling bus-networked devices includes a gateway including a memory unit and having an interface to an open field bus. A power supply unit supplies primary power for the gateway and bus subscribers. An auxiliary power supply unit supplies auxiliary power for the bus subscribers independent of bus functionality. A pluggable connection cable is electrically connects the gateway to the bus subscribers and transmits the primary and the auxiliary power and control and/or status information between the gateway and the bus subscribers. An application bus networks the bus subscribers to each other and is operable by the connection cable. A bus controller writes a target bus configuration of the application bus and stores the target bus configuration in a non-volatile manner in the memory unit. The bus controller is also configured to overwrite the target bus configuration with a present, actual bus configuration.

First claim

What is claimed is:

1. A system for controlling bus-networked devices, the system comprising:
a gateway including at least one memory unit and having an interface to an open field bus;
a first power supply unit electrically connected to the gateway and configured to supply primary power for the gateway and a plurality of bus subscribers;
an auxiliary power supply unit configured to supply auxiliary power for the plurality of bus subscribers independent of bus functionality;
a pluggable connection cable configured to electrically connect the gateway to the plurality of bus subscribers and to transmit the primary and the auxiliary power and at least one of control information and status information between the gateway and the plurality of bus subscribers;
an application bus configured to network the plurality of bus subscribers to each other, the application bus being operable by the connection cable; and
a bus controller configured to write a target bus configuration of the application bus and to store the target bus configuration in a non-volatile manner in the at least one memory unit, the bus controller being further configured to overwrite the target bus configuration with a present, actual bus configuration of the application bus as a new target configuration.

2. The system according to claim 1 , wherein the gateway includes at least one actuation element configured to initiate a configuration mode in the gateway in which the present, actual bus configuration is taken over by the gateway as the new target configuration, the new target configuration having at least one additional bus subscriber relative to the target configuration.

3. The system according to claim 2 , wherein, in the configuration mode, the gateway is configured to check how many bus subscribers are connected to the application bus.

4. The system according to claim 1 , wherein at least one of the plurality of bus subscribers includes at least one report device configured to report at least one of an actuator action and an actuator position on the application bus.

5. The system according to claim 1 , wherein the application bus is a Local Interconnect Network (LIN) bus, and wherein the transmission of the control information and the status information, and the configuration of the application bus is handled via a protocol that includes LIN data frames, the LIN data frames having a length of at least one byte and not more than 8 bytes.

6. The system according to claim 1 , wherein the plurality of bus subscribers are industrial switching devices.

7. The system according to claim 6 , wherein the industrial switching devices include at least one of power switches, motor circuit breakers and contactors, electronic motor-protection relays and frequency converters.

8. The system according to claim 1 , wherein the plurality of bus subscribers are connected to each other on the application bus in a linear manner via the connection cable.

9. The system according to claim 1 , wherein the connection cable is a 6-wire flat ribbon cable.

10. The system according to claim 1 , wherein the connection cable includes lines for transmitting the primary and auxiliary power, at least one control line and at least one status line.

11. The system according to claim 10 , wherein the at least one control line includes a line configured to switch a contactor of the plurality of bus subscribers on and off, and wherein the at least one status line includes a line configured to query a switching position of the contactor or a status of a motor circuit breaker of the plurality of bus subscribers.

Assignees

• Eaton Electrical Ip Gmbh & Co

Inventors

• Reidt Georg

Classifications

• H04L2012/4026

  Bus for use in automation systems · CPC title

• G06F13/4081 Primary

  Live connection to bus, e.g. hot-plugging (current or voltage limitation during live insertion H02H9/004) · CPC title

• H04L2012/40234

  Local Interconnect Network LIN · CPC title

• G06F13/4282

  on a serial bus, e.g. I2C bus, SPI bus (on daisy chain buses G06F13/4247) · CPC title

• G06F1/26

  Power supply means, e.g. regulation thereof (for memories G11C) · CPC title