Claims:
1. An electronic device of a process field bus (PROFIBUS) network for an automation system, the electronic device comprising:
an electric switch having at least two switches (SW1, SW2) operable for cutting the electronic device in from the PROFIBUS network or for cutting the electronic device out from the PROFIBUS network without impairing a bus connecting a plurality of devices forming the PROFIBUS network, wherein the electronic device is selected from the plurality of devices.

2. The electronic device as claimed in claim 1, wherein the PROFIBUS network is a PROFIBUS decentralized peripherals (DP) network.

3. The electronic device as claimed in claim 1, wherein the electronic device comprises a termination resistor in the PROFIBUS network.

4. The electronic device as claimed in claim 1, wherein the electronic device is configured to control one or more functions in the PROFIBUS network..

5. The electronic device as claimed in claim 1, wherein the electronic device comprises a sensor.

6. The electronic device as claimed in claim 1, wherein the electronic device is configured to trigger one or more actuators in the PROFIBUS network.

7. The electronic device as claimed in claim 1, wherein the electronic device is a slave device in the PROFIBUS network.
, Description:TECHNICAL FIELD
[0001] The present disclosure relates to industrial field bus communication, and more specifically relates to, end devices on PROFIBUS network.

BACKGROUND
[0002] Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
[0003] PROFIBUS (Process Field Bus) is a standard for fieldbus communication in automation technology and was first promoted in 1989 by BMBF (German department of education and research) and then used by Siemens. There are two variations of PROFIBUS in use today; the most commonly used PROFIBUS DP, and the lesser used, application specific, PROFIBUS PA:
[0004] PROFIBUS DP (Decentralized Peripherals) is used to operate sensors and actuators via a centralized controller in production (factory) automation applications.
[0005] PROFIBUS PA (Process Automation) is used to monitor measuring equipment via a process control system in process automation applications. This variant is designed for use in explosion/hazardous areas (Ex-zone 0 and 1). The Physical Layer (i.e. the cable) conforms to IEC 61158-2, which allows power to be delivered over the bus to field instruments, while limiting current flows so that explosive conditions are not created, even if a malfunction occurs. The number of devices attached to a PA segment is limited by this feature. PA has a data transmission rate of 31.25 kbit/s. However, PA uses the same protocol as DP, and can be linked to a DP network using a coupler device. The much faster DP acts as a backbone network for transmitting process signals to the controller. This means that DP and PA can work tightly together, especially in hybrid applications where process and factory automation networks operate side by side.
[0006] At each segment of the PROFIBUS DP network, it is necessary to enable a termination resistor at the extreme points of the main bus. The PROFIBUS DP network connector normally has a switch to enable the termination resistor. It is important to emphasize that in order to be possible to disconnect the element from the network without impairing the bus, it becomes interesting the use of active terminations, which are elements that have only the termination function. Therefore, any equipment of the network can be disconnected from the bus without impairing the termination. The end nodes on a PROFIBUS-DP network must be terminated to avoid reflections on the bus line. The PROFIBUS-preferred bus topology is daisy chaining as illustrated in FIG. 1 The end devices of a physical bus segment must be terminated (LT = Line Termination). Termination prevents reflections that can disturb the data communication. The higher the baud rate and the longer the cable, the more important termination becomes. The termination is activated at both ends of every bus segment. With PROFIBUS DP the termination is powered to provide an idle level when nobody is sending data. Wrong or missing termination results in transmission errors when the worst case result is that the communication link is lost. In addition, the PROFIBUS termination provides a defined 'idle' level for the cable.
[0007] Each PROFIBUS DP slave device is connected to PROFIBUS network with PROFIBUS electrical connector. The above said connector is a D-sub 9 pin connector which is proprietary in nature. The above said connector comes in different configurations based on angle between incoming cable and connecting pins to suit the cabling scheme in a particular panel. Different configurations are shown in FIG. 3. The above said connector provides facility to route cable in order to connect PROFIBUS slave device in a Daisy Chain.
[0008] However, the conventional connector is costly, it demands careful selection and it reduces flexibility to change cabling scheme. Further, there is no system that simplifies job of PROFIBUS cabling and installation.
[0009] Whereas there is certainly nothing wrong with existing techniques or system, nonetheless, there still exists a need to provide an efficient, effective, reliable, and improved PROFIBUS connector which are cost effective and flexible is use. Further, there exists a need of a connection and line termination provision on profibus slave device that reduces cost of PROFIBUS installation. Furthermore, there is a need of a connection and line termination provision on profibus slave device provides flexibility in PROFIBUS cabling in panel. Additionally, there is a need of an effective solution that provides flexibility in selection of End Node on a given PROFIBUS Network by means of providing termination resistor which can be connected or disconnected with a switch. Moreover, there is a need of an effective solution that simplifies installation of PROFIBUS Connector.
[00010] All publications herein are incorporated by reference to the same extent as if each individual publication or patent application were specifically and individually indicated to be incorporated by reference. Where a definition or use of a term in an incorporated reference is inconsistent or contrary to the definition of that term provided herein, the definition of that term provided herein applies and the definition of that term in the reference does not apply.
[00011] In some embodiments, the numbers expressing quantities of ingredients, properties such as concentration, reaction conditions, and so forth, used to describe and claim certain embodiments of the invention are to be understood as being modified in some instances by the term “about”. Accordingly, in some embodiments, the numerical parameters set forth in the written description and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by a particular embodiment. In some embodiments, the numerical parameters should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of some embodiments of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as practicable. The numerical values presented in some embodiments of the invention may contain certain errors necessarily resulting from the standard deviation found in their respective testing measurements.
[00012] As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.
[00013] The recitation of ranges of values herein is merely intended to serve as a shorthand method of referring individually to each separate value falling within the range. Unless otherwise indicated herein, each individual value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g. “such as”) provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the invention.
[00014] Groupings of alternative elements or embodiments of the invention disclosed herein are not to be construed as limitations. Each group member can be referred to and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for reasons of convenience and/or patentability. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified thus fulfilling the written description of all groups used in the appended claims.

SUMMARY
[00015] The present disclosure relates to industrial field bus communication, and more specifically relates to, end devices on PROFIBUS network.
[00016] Accordingly, an aspect of the present disclosure relates to an electronic device of a process field bus (PROFIBUS) network for an automation system. The electronic device includes an electric switch having at least two switches (SW1, SW2) operable for cutting the electronic device in from the PROFIBUS network or for cutting the electronic device out from the PROFIBUS network without impairing a bus connecting a plurality of devices forming the PROFIBUS network, wherein the electronic device is selected from the plurality of devices.
[00017] In an example, SW1 and SW2 both are responsible to CUT IN and CUT OUT any device on PROFIBUS. If both SW1 and SW2 are ON then will CUT IN the device and if both SW1 and SW2 are OFF then will CUT the device on profibus communication line.
[00018] In an aspect, the PROFIBUS network is a PROFIBUS decentralized peripherals (DP) network.
[00019] In an aspect, the electronic device comprises a termination resistor in the PROFIBUS network.
[00020] In an aspect, the electronic device is configured to control one or more functions in the PROFIBUS network.
[00021] In an aspect, the electronic device comprises a sensor.
[00022] In an aspect, the electronic device is configured to trigger one or more actuators in the PROFIBUS network.
[00023] In an aspect, the electronic device is a slave device in the PROFIBUS network.
[00024] Various objects, features, aspects and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components
BRIEF DESCRIPTION OF THE DRAWINGS
[00025] The accompanying drawings are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure. The diagrams are for illustration only, which thus is not a limitation of the present disclosure, and wherein:
[00026] FIG. 1 illustrates a Daisy Chaining Bus Topology in PROFIBUS.
[00027] FIG. 2 illustrates a PROFIBUS Proprietary Connector.
[00028] FIG. 3 illustrates different configurations of the profibus connector 35°, 90° and 180° as shown in order.
[00029] FIG. 4 illustrates an internal termination resistor for profibus communication, in accordance with an exemplary embodiment of the present disclosure.
[00030] FIG. 5 illustrates a switch to cut in or cut out termination resistor, in accordance with an exemplary embodiment of the present disclosure.
[00031] FIG. 6 illustrates signal indicating good communication channel and bad communication channel, in accordance with an exemplary embodiment of the present disclosure.

DETAILED DESCRIPTION
[00032] The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the scope of the present disclosure as defined by the appended claims.
[00033] If the specification states a component or feature “may”, “can”, “could”, or “might” be included or have a characteristic, that particular component or feature is not required to be included or have the characteristic.
[00034] As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.
[00035] Exemplary embodiments will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments are shown. These exemplary embodiments are provided only for illustrative purposes and so that this disclosure will be thorough and complete and will fully convey the scope of the invention to those of ordinary skill in the art. The invention disclosed may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Various modifications will be readily apparent to persons skilled in the art. The general principles defined herein may be applied to other embodiments and applications without departing from the scope of the invention. Moreover, all statements herein reciting embodiments of the invention, as well as specific examples thereof, are intended to encompass both structural and functional equivalents thereof. Additionally, it is intended that such equivalents include both currently known equivalents as well as equivalents developed in the future (i.e., any elements developed that perform the same function, regardless of structure). Also, the terminology and phraseology used is for the purpose of describing exemplary embodiments and should not be considered limiting. Thus, the present invention is to be accorded the widest scope encompassing numerous alternatives, modifications and equivalents consistent with the principles and features disclosed. For purpose of clarity, details relating to technical material that is known in the technical fields related to the invention have not been described in detail so as not to unnecessarily obscure the present invention.
[00036] Each of the appended claims defines a separate invention, which for infringement purposes is recognized as including equivalents to the various elements or limitations specified in the claims. Depending on the context, all references below to the "invention" may in some cases refer to certain specific embodiments only. In other cases it will be recognized that references to the "invention" will refer to subject matter recited in one or more, but not necessarily all, of the claims.
[00037] All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g., “such as”) provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the invention.
[00038] Various terms as used herein are shown below. To the extent a term used in a claim is not defined below, it should be given the broadest definition persons in the pertinent art have given that term as reflected in printed publications and issued patents at the time of filing.
[00039] The present disclosure relates to industrial field bus communication, and more specifically relates to, end devices on PROFIBUS network.
[00040] The present invention provides improved solution to cost and flexibility of legacy PROFIBUS connector. The proposed invention provides a connection and line termination provision on profibus slave device that reduces cost of PROFIBUS installation. The proposed invention provides a connection and line termination provision on profibus slave device provides flexibility in PROFIBUS cabling in panel. The proposed invention provides an effective solution that provides flexibility in selection of End Node on a given PROFIBUS Network by means of providing termination resistor which can be connected or disconnected with a switch. The proposed invention provides an effective solution that simplifies installation of PROFIBUS Connector.
[00041] Accordingly, an aspect of the present disclosure relates to an electronic device of a process field bus (PROFIBUS) network for an automation system. The electronic device includes an electric switch having at least two switches (SW1, SW2) operable for cutting the electronic device in from the PROFIBUS network or for cutting the electronic device out from the PROFIBUS network without impairing a bus connecting a plurality of devices forming the PROFIBUS network, wherein the electronic device is selected from the plurality of devices.
[00042] In an example, SW1 and SW2 both are responsible to CUT IN and CUT OUT any device on PROFIBUS. If both SW1 and SW2 are ON then will CUT IN the device and if both SW1 and SW2 are OFF then will CUT the device on profibus communication line.
[00043] In an aspect, the PROFIBUS network is a PROFIBUS decentralized peripherals (DP) network.
[00044] In an aspect, the electronic device comprises a termination resistor in the PROFIBUS network.
[00045] In an aspect, the electronic device is is configured to control one or more functions in the PROFIBUS network.
[00046] In an aspect, the electronic device comprises a sensor.
[00047] In an aspect, the electronic device is configured to trigger one or more actuators in the PROFIBUS network.
[00048] In an aspect, the electronic device is a slave device in the PROFIBUS network.
[00049] FIG. 1 illustrates o Daisy Chaining Bus Topology in PROFIBUS. FIG. 2 illustrates a PROFIBUS Proprietary Connector. FIG. 3 illustrates different configurations of the profibus connector 35°, 90° & 180° as shown in order.
[00050] FIG. 4 illustrates an internal termination resistor for profibus communication, in accordance with an exemplary embodiment of the present disclosure.
[00051] As shown in FIG. 4, to provide the termination on the Bus termination resistors such as 390 O, 220 O and 390 O can be fitted on the PROFIBUS module itself.
[00052] FIG. 5 illustrates a switch to cut in or cut out termination resistor, in accordance with an exemplary embodiment of the present disclosure.
[00053] As shown in FIG. 5, the module can be provided with a DIP switch with two switches (SW1 and SW2) for cutting the termination resistors in and out. FIG. 5 shows the DIP switches in cut-out state.
DIP Switch Setting
Status SW1 SW2
Cut in ON ON
Cut out OFF OFF
Undefined state ON OFF
OFF ON
[00054] FIG. 6 illustrates signal indicating good communication channel and bad communication channel, in accordance with an exemplary embodiment of the present disclosure
[00055] In an embodiment, the proposed invention can reduce cost of PROFIBUS installation.
[00056] In another embodiment, the proposed invention can provide flexibility in PROFIBUS cabling in panel.
[00057] In another embodiment, the proposed invention can provide flexibility in selection of End Node on a given PROFIBUS Network by means of providing termination resistor which can be connected or disconnected with a switch.
[00058] In another embodiment, the proposed invention can simplify installation of PROFIBUS Connector.
[00059] In another embodiment, the proposed invention can reduce space required by PROFIBUS connector.
[00060] In another embodiment, the proposed invention can provide choice of connector to designers.
[00061] In another embodiment, the proposed invention can simplify job of PROFIBUS cabling and installation.
[00062] It should be apparent to those skilled in the art that many more modifications besides those already described are possible without departing from the inventive concepts herein. Moreover, in interpreting both the specification and the claims, all terms should be interpreted in the broadest possible manner consistent with the context. In particular, the terms “comprises” and “comprising” should be interpreted as referring to elements, components, or steps in a non-exclusive manner, indicating that the referenced elements, components, or steps may be present, or utilized, or combined with other elements, components, or steps that are not expressly referenced. Where the specification claims refers to at least one of something selected from the group consisting of A, B, C ….and N, the text should be interpreted as requiring only one element from the group, not A plus N, or B plus N, etc. The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the scope of the appended claims.
[00063] While embodiments of the present disclosure have been illustrated and described, it will be clear that the disclosure is not limited to these embodiments only. Numerous modifications, changes, variations, substitutions, and equivalents will be apparent to those skilled in the art, without departing from the scope of the disclosure, as described in the claims.
[00064] In the description of the present specification, reference to the term "one embodiment," "an embodiments", "an example", "an instance", or "some examples" and the description is meant in connection with the embodiment or example described The particular feature, structure, material, or characteristic included in the present invention, at least one embodiment or example. In the present specification, the term of the above schematic representation is not necessarily for the same embodiment or example. Furthermore, the particular features structures, materials, or characteristics described in any one or more embodiments or examples in proper manner. Moreover, those skilled in the art can be described in the specification of different embodiments or examples are joined and combinations thereof.
[00065] All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and/or all of the steps of any method or process so disclosed, may be combined in any combination, except combinations where at least some of such features and/or steps are mutually exclusive.
[00066] Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Thus, unless expressly stated otherwise, each feature disclosed is one example only of a generic series of equivalent or similar features.
[00067] The invention is not restricted to the details of the foregoing embodiment(s). The invention extends to any novel one, or any novel combination, of the features disclosed in this specification (including any accompanying claims, abstract and drawings), or to any novel one, or any novel combination, of the steps of any method or process so disclosed.
[00068] While the foregoing describes various embodiments of the invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof. The scope of the invention is determined by the claims that follow. The invention is not limited to the described embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.