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Profibus DP and CAN bus combination communication method applied in cigarette machine

A technology of CAN bus and communication method, applied in the field of industrial control, can solve the problems such as the inability to realize the logic control function of the cigarette machine, and achieve the effect of enhancing flexibility

Inactive Publication Date: 2008-04-30
深圳市鸿捷源自动化系统有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the network composed of PLC cannot realize all the logic control functions on the cigarette machine, especially in some occasions with high speed requirements, so the electrical module based on the microprocessor design becomes indispensable

Method used

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  • Profibus DP and CAN bus combination communication method applied in cigarette machine
  • Profibus DP and CAN bus combination communication method applied in cigarette machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In this embodiment, as shown in FIG. 1 , the Profibus DP bus interface unit is used as a Profibus DP slave station to exchange bus data. The content of the data is directly transmitted to the microprocessor through the Profibus DP bus, and the similar CAN bus interface unit as a node on the CAN bus realizes the data exchange on the CAN bus and directly transmits the data content to the microprocessor.

[0026] In the practical application of the present invention, after the microprocessor obtains the data on both sides, it is not simply to realize the data exchange on both sides through a certain protocol, but to process and realize the data on both sides respectively and make the data on both sides can be connected. On the other hand, the microprocessor can also directly execute logic actions based on the data obtained on the two buses, or return the logic information or data on the microprocessor to both sides.

[0027] In this embodiment, the programmable logic contr...

Embodiment 2

[0032]In the present embodiment, as shown in Figure 3, the connection of "Profibus DP bus interface unit" and the microprocessor can use the Profibus DP slave station module that provides the data address line interface as the connection mode, that is, the SPC3 data address line and The connection mode of the microprocessor, the box in the figure is a module integrating Profibus DP slave function, the address lines A0 to A11 and data lines D0 to D7 on one side of Anybus are connected to the address data line of the CPU They are respectively connected to the read, write and chip select pins of the CPU; the other side of the Anybus is directly connected to the Profibus DP bus.

[0033] In this embodiment, the microprocessor itself has a CAN function, and the microprocessor only needs to be simply connected to the CAN level chip, which is 82C250, and the device can be directly connected to the CAN bus. The microprocessor in this embodiment is LPC2294, and its CPU itself has inte...

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Abstract

A communication method of the combination of the Profibus DP and a CAN bus is used in cigarette machines, and is characterized in that a microprocessor can be used for receiving and processing the state information of the present cigarette machine, transformed by the Profibus DP, such as the operating and the failure of the present cigarette machine, the state information on the input and the output interface cards of a logic processor PLC, such as the oil pressure on-off state, the filter stick monitoring state, and the shield position state, and the physical operating state information of the cigarette machine, such as the heating temperature of tipping paper, the heating temperature of a washboard, the filter-tip material position of a filter-tip connector MAX, and the material position state of a material groove on a tobacco feeding device. The microprocessor can send another type of organization information of processed information to a supervisory computer by the interface unit of the CNN bus. The invention can realize the data exchange between the main station of the Profibus DP and the electric components of the CNN bus, thereby greatly improving the flexibility of a control system of the cigarette machine.

Description

Technical field: [0001] The invention relates to the field of industrial control, in particular to a communication method and an interface technology in which field bus Profibus DP and field bus CAN are combined on the same hardware, which are applied to cigarette making machines. Background technique: [0002] Electrical devices realized through Profibus DP are widely used in automation fields such as industry, building, process, electric power and so on. Profibus DP is a main subset of Profibus (Process Fieldbus). It is an international, open and general fieldbus standard. For details of the protocol, please refer to EN50170 Volume 2. Based on the technical characteristics of Profibus DP, electrical devices implemented through Profibus DP are widely used in cigarette making equipment. [0003] CAN (Controller Area Network) is the controller area network. Because of its high performance, high reliability and unique design, it has been widely used. CAN was originally desi...

Claims

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Application Information

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IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 周志敏梁杰申林周雄
Owner 深圳市鸿捷源自动化系统有限公司
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