CN117395099A - Extensible IO-Link cascading system and method - Google Patents
Extensible IO-Link cascading system and method Download PDFInfo
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- CN117395099A CN117395099A CN202311341552.4A CN202311341552A CN117395099A CN 117395099 A CN117395099 A CN 117395099A CN 202311341552 A CN202311341552 A CN 202311341552A CN 117395099 A CN117395099 A CN 117395099A
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- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000004891 communication Methods 0.000 claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/4185—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by the network communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention discloses an expandable IO-Link cascade system and method, wherein the system comprises an IO-Link master station and a plurality of stages of IO-Link devices, the first stage of IO-Link device is connected with the IO-Link master station to complete first stage cascade, the next stage of IO-Link device is connected with the last stage of IO-Link device to complete multi-stage cascade, the IO-Link device comprises a first IO-Link transceiver and a second IO-Link transceiver and a data processing MCU, the data processing MCU is connected with a digital input output quantity, the first IO-Link transceiver and the second IO-Link transceiver are respectively connected with the data processing MCU, the first stage of IO-Link device is in communication connection with the IO-Link master station through the first IO-Link transceiver, and is in communication connection with the first stage of IO-Link device of the second stage of IO-Link device through the second IO-Link transceiver. The invention has flexible expansion function.
Description
Technical Field
The invention relates to the technical field of IO-Link, in particular to an extensible IO-Link cascading system and method.
Background
Because under the intelligent manufacturing production line control system, a plurality of actuating mechanisms and sensors are needed to control the production equipment and feed back the acquired signals; the IO-Link system is used as a general production line automation control technology, and the IO-Link equipment is a bridge between a main station and an actuator and between the main station and a sensor, and has the characteristics of flexibility, universality, expandability and the like.
In the existing IO-Link product automation production line, one IO-Link master station can only be connected with one IO-Link device, the IO-Link devices cannot be connected in cascade, if a plurality of IO-Link devices are needed, a plurality of IO-Link master stations are needed to be arranged, so that wiring is very complex, and reliability is low.
Disclosure of Invention
The invention aims to provide an expandable IO-Link cascading system and method, which have flexible expansion functions through a multi-channel cascading technology, so that the problem that the current IO-Link cannot be cascaded is solved, and the expansion functions are greatly improved.
The technical scheme of the invention is as follows:
the expandable IO-Link cascade system comprises an IO-Link master station and a plurality of stages of IO-Link devices, wherein the first stage IO-Link device is connected with the IO-Link master station to complete first stage cascade, the next stage IO-Link device is connected with the previous stage IO-Link device to complete multi-stage cascade, the IO-Link device comprises a first IO-Link transceiver, a data processing MCU and a second IO-Link transceiver, the data processing MCU is connected with a digital input output quantity, the first IO-Link transceiver and the second IO-Link transceiver are respectively connected with the data processing MCU, the first stage IO-Link device is in communication connection with the IO-Link master station through the first IO-Link transceiver, the first stage IO-Link device is in communication connection with the first stage IO-Link device of the second stage IO-Link device through the second IO-Link transceiver, and the second stage IO-Link device is in communication connection with the first IO-Link transceiver of the next stage IO-Link device through the second IO-Link transceiver.
The IO-Link device and the IO-Link master station are provided with communication ports meeting the IO-Link communication protocol.
The IO-Link cascading method of the extensible IO-Link cascading system is as follows:
when the first-stage IO-Link equipment starts to be powered on, firstly, ISDU parameters are configured, then the number of cascade equipment and 32-byte input/output of an IO-Link mode are set, and then communication requests of an IO-Link master station are waited;
the first-stage IO-Link device receives 32 bytes of input data through the first IO-Link transceiver, analyzes a 32 bytes of input request of the local IO-Link device through the data processing MCU to execute a request task, responds to 32 bytes of output data of the local IO-Link device, forwards 32 bytes of input data to the next-stage IO-Link device through the second IO-Link transceiver, responds to 32 bytes of output data of the next-stage IO-Link device, receives 32 bytes of output data of the next-stage IO-Link device, and waits for an IO-Link master station communication request;
when the second-stage IO-Link equipment starts to be electrified, firstly loading configuration parameters, using an IO-Link mode by default, and then waiting for a communication request of the last-stage IO-Link equipment;
the second-level IO-Link device receives 32 bytes of input data through the first IO-Link transceiver;
if the request data is the request data of the local IO-Link device, analyzing a 32-byte input request of the local IO-Link device to execute a request task through a data processing MCU, responding to the 32-byte output data of the local IO-Link device, and receiving the 32-byte output data of the next-stage IO-Link device through a second IO-Link transceiver;
if the data is not the request data of the local IO-Link device, forwarding 32 bytes of input data to the next-stage IO-Link device through the second IO-Link transceiver, correspondingly outputting the 32 bytes of data of the next-stage IO-Link device, and receiving the 32 bytes of output data of the next-stage IO-Link device.
Compared with the prior art, the invention has the beneficial effects that: the invention provides an extensible IO-Link cascade system, which is applied to an IO-Link product automation production line, can flexibly expand the IO-Link system, and can simultaneously cascade a plurality of IO-Link devices, thereby greatly saving the number of IO-Link master stations, greatly improving the number of channels of digital quantity, simplifying the wiring of the IO-Link product automation production line, improving the reliability and guaranteeing the reliable operation of the IO-Link product automation production line.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a system block diagram of an extensible IO-Link cascade system provided by the invention;
fig. 2 is a flowchart of an IO-Link cascade method of the scalable IO-Link cascade system provided by the present invention.
Description of the embodiments
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In order to illustrate the technical scheme of the invention, the following description is made by specific examples.
Examples
Referring to fig. 1, the embodiment provides an expandable IO-Link cascade system, which includes an IO-Link master station and a plurality of stages of IO-Link devices, where the first stage of IO-Link device accesses the IO-Link master station to complete the first stage of cascade, the next stage of IO-Link device accesses the previous stage of IO-Link device to complete the multi-stage cascade, the IO-Link device includes a first IO-Link transceiver, a data processing MCU and a second IO-Link transceiver, the data processing MCU accesses a digital input output, the first IO-Link transceiver and the second IO-Link transceiver are respectively connected with the data processing MCU, the first stage of IO-Link device is connected with the IO-Link master station through the first IO-Link transceiver, the first stage of IO-Link device is connected with the first stage of IO-Link device through the second IO-Link transceiver, and the second stage of IO-Link device is connected with the first stage of IO-Link device through the second IO-Link transceiver.
The IO-Link device and the IO-Link master station are provided with communication ports meeting the IO-Link communication protocol.
The IO-Link cascading method of the extensible IO-Link cascading system is as follows, and is shown in combination with FIG. 2:
when the first-stage IO-Link equipment starts to be powered on, firstly, ISDU parameters are configured, then the number of cascade equipment and 32-byte input/output of an IO-Link mode are set, and then communication requests of an IO-Link master station are waited;
the first-stage IO-Link device receives 32 bytes of input data through the first IO-Link transceiver, analyzes a 32 bytes of input request of the local IO-Link device through the data processing MCU to execute a request task, responds to 32 bytes of output data of the local IO-Link device, forwards 32 bytes of input data to the next-stage IO-Link device through the second IO-Link transceiver, responds to 32 bytes of output data of the next-stage IO-Link device, receives 32 bytes of output data of the next-stage IO-Link device, and waits for an IO-Link master station communication request;
when the second-stage IO-Link equipment starts to be electrified, firstly loading configuration parameters, using an IO-Link mode by default, and then waiting for a communication request of the last-stage IO-Link equipment;
the second-level IO-Link device receives 32 bytes of input data through the first IO-Link transceiver;
if the request data is the request data of the local IO-Link device, analyzing a 32-byte input request of the local IO-Link device to execute a request task through a data processing MCU, responding to the 32-byte output data of the local IO-Link device, and receiving the 32-byte output data of the next-stage IO-Link device through a second IO-Link transceiver;
if the data is not the request data of the local IO-Link device, forwarding 32 bytes of input data to the next-stage IO-Link device through the second IO-Link transceiver, correspondingly outputting the 32 bytes of data of the next-stage IO-Link device, and receiving the 32 bytes of output data of the next-stage IO-Link device.
When the system is actually applied, the system is applied to an IO-Link product automation production line, flexible IO-Link system expansion can be performed, and a plurality of IO-Link devices can be cascaded at the same time, so that the number of IO-Link master stations is greatly saved, the number of channels of digital quantity can be greatly increased, wiring of the IO-Link product automation production line is simplified, reliability is improved, and reliable operation of the IO-Link product automation production line is ensured.
The foregoing description of the preferred embodiment of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (3)
1. An extensible IO-Link cascade system, characterized by: the system comprises an IO-Link master station and a plurality of stages of IO-Link devices, wherein the first stage IO-Link device is connected with the IO-Link master station to complete first stage cascading, the next stage IO-Link device is connected with the previous stage IO-Link device to complete multi-stage cascading, the IO-Link device comprises a first IO-Link transceiver, a data processing MCU and a second IO-Link transceiver, the data processing MCU is connected with a digital input output quantity, the first IO-Link transceiver and the second IO-Link transceiver are respectively connected with the data processing MCU, the first stage IO-Link device is in communication connection with the IO-Link master station through the first IO-Link transceiver, the first stage IO-Link device is in communication connection with the first stage IO-Link device of the second stage IO-Link device through the second IO-Link transceiver, and the second stage IO-Link device is in communication connection with the first IO-Link transceiver of the next stage IO-Link device through the second IO-Link transceiver.
2. The scalable IO-Link cascade system of claim 1, wherein: the first-stage IO-Link equipment is in communication connection with the IO-Link master station and the IO-Link equipment is in communication connection based on an IO-Link communication protocol, and the IO-Link equipment and the IO-Link master station are provided with communication ports meeting the IO-Link communication protocol.
3. An IO-Link cascade method of the scalable IO-Link cascade system according to claim 1 or 2, characterized by:
when the first-stage IO-Link equipment starts to be powered on, firstly, ISDU parameters are configured, then the number of cascade equipment and 32-byte input/output of an IO-Link mode are set, and then communication requests of an IO-Link master station are waited;
the first-stage IO-Link device receives 32 bytes of input data through the first IO-Link transceiver, analyzes a 32 bytes of input request of the local IO-Link device through the data processing MCU to execute a request task, responds to 32 bytes of output data of the local IO-Link device, forwards 32 bytes of input data to the next-stage IO-Link device through the second IO-Link transceiver, responds to 32 bytes of output data of the next-stage IO-Link device, receives 32 bytes of output data of the next-stage IO-Link device, and waits for an IO-Link master station communication request;
when the second-stage IO-Link equipment starts to be electrified, firstly loading configuration parameters, using an IO-Link mode by default, and then waiting for a communication request of the last-stage IO-Link equipment;
the second-level IO-Link device receives 32 bytes of input data through the first IO-Link transceiver;
if the request data is the request data of the local IO-Link device, analyzing a 32-byte input request of the local IO-Link device to execute a request task through a data processing MCU, responding to the 32-byte output data of the local IO-Link device, and receiving the 32-byte output data of the next-stage IO-Link device through a second IO-Link transceiver;
if the data is not the request data of the local IO-Link device, forwarding 32 bytes of input data to the next-stage IO-Link device through the second IO-Link transceiver, correspondingly outputting the 32 bytes of data of the next-stage IO-Link device, and receiving the 32 bytes of output data of the next-stage IO-Link device.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110266569A (en) * | 2019-05-22 | 2019-09-20 | 三明学院 | A kind of IO-LINK port expansion device and method |
| CN219651152U (en) * | 2023-05-05 | 2023-09-08 | 浙江吉利控股集团有限公司 | Control system of power exchange station and power exchange station |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110266569A (en) * | 2019-05-22 | 2019-09-20 | 三明学院 | A kind of IO-LINK port expansion device and method |
| CN219651152U (en) * | 2023-05-05 | 2023-09-08 | 浙江吉利控股集团有限公司 | Control system of power exchange station and power exchange station |
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