CN103145045A - Gantry crane PLC (programmable logic controller) field bus network constructed by Ethernet - Google Patents
Gantry crane PLC (programmable logic controller) field bus network constructed by Ethernet Download PDFInfo
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- CN103145045A CN103145045A CN2013100908835A CN201310090883A CN103145045A CN 103145045 A CN103145045 A CN 103145045A CN 2013100908835 A CN2013100908835 A CN 2013100908835A CN 201310090883 A CN201310090883 A CN 201310090883A CN 103145045 A CN103145045 A CN 103145045A
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Abstract
The invention discloses a gantry crane PLC (programmable logic controller) field bus network constructed by Ethernet. The gantry crane PLC field bus network is characterized in that a crane PLC control system comprises a PLC main station, each long-distance PLC substation and each short range PLC substation, and the PLC main station is provided with an Ethernet switcher and an Ethernet photoelectric conversion module or a single mode fiber transceiver; and the PLC main station and each long-distance PLC substation 2 are connected through an optical fiber, the PLC main station 1 and the each short range PLC substation are connected by adopting an Ethernet wire, so as to realize the long distance field bus communication of the Ethernet skeleton. Compared with the prior art, the gantry crane PLC field bus network provided by the invention has the advantages that the construction cost is low, the structure is simple, the construction and installation are convenient, the property is stable, the compatibility is good, and the control level of a crane is further improved.
Description
Technical field
The present invention relates to technical field of industrial automatic control, especially a kind of transfer crane PLC fieldbus networks of ethernet framework.
Background technology
Shipbuilding gantry crane is the important production facilities of shipyard, and along with the development of automation of industry technology, the modern control conveniences such as frequency converter and PLC progressively replace traditional control relay circuit, and wherein PLC adopts field bus communication to become technological trend.The control system of the shipbuilding gantry crane of the type adopts PLC to concentrate-distributed frame and fieldbus framework, and field control element and drive system all access fieldbus networks.The PLC main website adopts fiber optic cable communications to connect each substation, and most of field bus communication all belongs to the industrial bus standard, and brand patent protection is separately arranged, and its each component costs is higher.Due to the complete machine span of shipbuilding gantry crane between 50 ~ 200m, floor level is arrived between 50 ~ 90m in large soffit, its network layout distance is greater than 50m, if adopt common fieldbus copper dielectric cable (as PROFIBUS-DP communication cable commonly used), signal attenuation is serious, therefore when its network layout apart from greater than 100m the time, usually adopt optical fiber as communication media.The control communication network of a typical shipbuilding gantry crane, network layout distance between its PLC main website and each remote branch station adopts ferry optics comunication usually more than 50m, the element of each substation and its substation annex (as various kinds of sensors, coder etc.) network layout distance connects with next employing copper dielectric cable at 50m usually.
The problem that prior art exists is: the control communication network of shipbuilding gantry crane adopts the PROFIBUS-DP fieldbus as Siemens Company, its PLC main website and each remote branch station need the photoelectric conversion module of configuration bus special use, OLM as Siemens Company, the photoelectric conversion module of bus special use is changed electric signal and optical signalling mutually, to satisfy the requirement of communication, network exchange module adopts the private bus product under the contract, and the optical fiber model adopts the multimode specification usually, makes PLC adopt the cost of field bus communication higher.
Summary of the invention
The transfer crane PLC fieldbus networks that the objective of the invention is a kind of ethernet framework of designing for the deficiencies in the prior art, adopt ethernet communication technological architecture transfer crane PLC fieldbus networks, realize reliably, long distance field bus communication cheaply, have simple in structure, compatible good, reliability is high, effectively reduces engineering cost, reduce the repair and maintenance cost, improve the crane control level.
The object of the present invention is achieved like this: a kind of transfer crane PLC fieldbus networks of ethernet framework is characterized in that hoisting crane PLC control system comprises PLC main website, each remote PLC substation and each short range PLC substation; Described PLC main website is provided with the Ethernet switch that is connected with each short range PLC substation with each remote PLC substation; Described Ethernet switch is provided with each main website ethernet photoelectric conversion module or the single mode optical fiber transceiver that is connected with each remote PLC substation; Described each remote PLC substation is provided with each substation ethernet photoelectric conversion module or single mode optical fiber transceiver; Ethernet switch adopts copper core ethernet line to be connected with each short range substation with CPU in master station, each main website ethernet photoelectric conversion module or single mode optical fiber transceiver, each main website ethernet photoelectric conversion module or single mode optical fiber transceiver adopt optical fiber to be connected with each substation ethernet photoelectric conversion module or single mode optical fiber transceiver, each substation ethernet photoelectric conversion module or single mode optical fiber transceiver adopt optical fiber to be connected with each remote branch station, realize the long distance field bus communication of ethernet framework.
The communication distance of described each remote PLC substation and PLC main website〉50 meters.
The communication distance of described each short range PLC substation and PLC main website≤50 meters.
The present invention compared with prior art has advantages of low-cost framework PLC fieldbus networks, and is simple in structure, construction install convenience, and stable performance, compatible good, reliability is high, reduces the engineering wiring cost, further improves the crane control level.
Description of drawings
Fig. 1 is structural representation of the present invention
The specific embodiment
Consult accompanying drawing 1, hoisting crane PLC control system of the present invention comprises PLC main website 1, each remote PLC substation 2 and each short range PLC substation 3, the communication distance of described each remote PLC substation 2 and PLC main website 1〉50 meters; The communication distance of described each short range PLC substation 3 and PLC main website 1≤50 meters; Described PLC main website 1 is provided with the Ethernet switch 12 that is connected with each short range PLC substation 3 with each remote PLC substation 2; Described Ethernet switch 12 is provided with each main website ethernet photoelectric conversion module or the single mode optical fiber transceiver 13 that is connected with each remote PLC substation 2; Described each remote PLC substation 2 is provided with each substation ethernet photoelectric conversion module or single mode optical fiber transceiver 22; Ethernet switch 12 adopt copper core ethernet lines respectively with PLC main website 1 in central process unit 11, each main website ethernet photoelectric conversion module or single mode optical fiber transceiver 13 be connected with each short range PLC substation 3, each main website ethernet photoelectric conversion module or single mode optical fiber transceiver 13 adopt optical fiber to be connected with each substation ethernet photoelectric conversion module or single mode optical fiber transceiver 22, each substation ethernet photoelectric conversion module or single mode optical fiber transceiver 22 adopt optical fiber to be connected with each remote branch station 22, realize the high pedestal jib crane PLC fieldbus networks of ethernet framework.
Above-mentioned PLC main website 1, each remote PLC substation 2 and 3 integrated Ethernet interfaces of needs of each short range PLC substation or ethernet module, PLC main website 1 uses optical fiber to be connected greater than the 50m long haul communication time with each remote PLC substation 2, PLC main website 1 adopts copper core ethernet line to be connected less than the 50m short haul connection time with each short range PLC substation 3.The equal configuration ethernet interface of element or the interface module of each remote PLC substation 2 and each short range PLC substation 3 are so that frequency converter, coder and sensor access.Like this, between PLC main website 1 and each remote PLC substation 2 and each short range PLC substation 3 and need the equal access communications network of element that communicate by letter, the ethernet fieldbus networking of complete machine is completed, and network is transparent to the user.The present invention can be used for the dock crane of different size, construction install convenience, and cost is low, stable performance.
Claims (3)
1. the transfer crane PLC fieldbus networks of an ethernet framework is characterized in that hoisting crane PLC control system comprises PLC main website, each remote PLC substation and each short range PLC substation; Described PLC main website is provided with the Ethernet switch that is connected with each short range PLC substation with each remote PLC substation; Described Ethernet switch is provided with each main website ethernet photoelectric conversion module or the single mode optical fiber transceiver that is connected with each remote PLC substation; Described each remote PLC substation is provided with each substation ethernet photoelectric conversion module or single mode optical fiber transceiver; Ethernet switch adopts copper core ethernet line to be connected with each short range substation with CPU in master station, each main website ethernet photoelectric conversion module or single mode optical fiber transceiver, each main website ethernet photoelectric conversion module (or single mode optical fiber transceiver) adopts optical fiber to be connected with each substation ethernet photoelectric conversion module (or single mode optical fiber transceiver), each substation ethernet photoelectric conversion module (or the single mode optical fiber transceiver adopts optical fiber) is connected with each remote branch station, realizes the long distance field bus communication of ethernet framework.
2. the transfer crane PLC fieldbus networks of ethernet framework according to claim 1 is characterized in that the communication distance of described each remote PLC substation and PLC main website〉50 meters.
3. the transfer crane PLC fieldbus networks of ethernet framework according to claim 1 is characterized in that the communication distance of described each short range PLC substation and PLC main website≤50 meters.
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| CN2013100908835A CN103145045A (en) | 2013-03-21 | 2013-03-21 | Gantry crane PLC (programmable logic controller) field bus network constructed by Ethernet |
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| CN2013100908835A CN103145045A (en) | 2013-03-21 | 2013-03-21 | Gantry crane PLC (programmable logic controller) field bus network constructed by Ethernet |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104140046A (en) * | 2014-08-12 | 2014-11-12 | 徐州重型机械有限公司 | Method and controller applied to communication of crane as well as crane |
| CN105858479A (en) * | 2016-06-08 | 2016-08-17 | 中船第九设计研究院工程有限公司 | Distributed large gantry crane weighing system based on Ethernet |
| CN105883621A (en) * | 2016-06-21 | 2016-08-24 | 中船第九设计研究院工程有限公司 | Distributed weighing system on basis of DP bus for large gantry cranes |
| CN108988947A (en) * | 2018-08-08 | 2018-12-11 | 岳阳林纸股份有限公司 | Composite fiber communication system based on PROFIBUS bus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104140046A (en) * | 2014-08-12 | 2014-11-12 | 徐州重型机械有限公司 | Method and controller applied to communication of crane as well as crane |
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| CN108988947A (en) * | 2018-08-08 | 2018-12-11 | 岳阳林纸股份有限公司 | Composite fiber communication system based on PROFIBUS bus |
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Application publication date: 20130612 |