CN105404211A - Coupling communication plate based on EtherCAT technology - Google Patents
Coupling communication plate based on EtherCAT technology Download PDFInfo
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- CN105404211A CN105404211A CN201510955045.9A CN201510955045A CN105404211A CN 105404211 A CN105404211 A CN 105404211A CN 201510955045 A CN201510955045 A CN 201510955045A CN 105404211 A CN105404211 A CN 105404211A
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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
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0421—Multiprocessor system
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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
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/23—Pc programming
- G05B2219/23269—Program provides for communication protocol with device, equipment
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Abstract
The invention discloses a coupling communication plate based on an EtherCAT technology. The coupling communication plate comprises a controller and a microprocessor connected with the controller through an SPI bus; at least one external communication interface electrically connected with the controller; a bus connector in communication connection with the controller; a power supply conversion chip electrically connected with the bus connector, the controller and the microprocessor; a PHY chip and a transformer which are successively connected between the controller and the external communication interface; and a crystal oscillator for performing time synchronization on the controller and the chip. The coupling communication plate employs a modular physical structure to realize a communication management function between an EtherCAT master station and a slave station and a power supply management function; an input and output module does not have to be directly connected with a master station CPU module, and each module circuit is greatly simplified; and through a power supply conversion circuit, 24V power drawn from an external power source is converted into 5V voltage, the 5V voltage is converted into 3.3V voltage, and the 3.3V voltage is converted into 1.8V voltage.
Description
Technical field
The present invention relates to electric elements design field.More specifically, a kind of coupled communication plate based on EtherCAT technology is related to.
Background technology
EtherCAT is proposed based on ethernet technology by the Bei Fu company of Germany, and it is a kind of technology with flexible network topologies structure.Its feature encapsulates IP/UDP in the protocol, so do not need IP agreement just can realize communication.EtherCAT technology has the following advantages: speed is fast, synchronous transmission; The cost ratio fieldbus of system is low; Just can realize in hardware when real-time communication; Support various topological structures; Support the communication between the number of mechanisms that master station and follow station forms; The ethernet frame of employing standard; The technology of all-round opening; Bandwidth availability ratio is high, and a net on earth etc.EtherCAT system is a main website/slave station system, uses the structure of the many slave stations of single main website in design.In whole host-guest architecture, host computer realizes the communication of host computer and main website by Ethernet protocol.And main website has bus control right for slave station, main website reads slave station I/O image data and sends information to slave station is carry out in the cycle.When communicating, EtherCAT agreement without the need to receiving the packet of Ethernet and data being sent in each equipment after being decoded again as ICP/IP protocol.EtherCAT directly can read data with respective addressed information from standing in message through its node.Similarly, the data of input are also that message is direct-insert through node.
EtherCAT technology with it at a high speed, simple, be easy to the concern that realizes obtaining increasing research staff.When utilizing EtherCAT technical design master station and follow station, the modular physical Design of many employings, but general designer, is always directly connected between main website with slave station input and output (I/O) intermodule by Ethernet, makes the design more complicated of each slave station module.And existing EtherCAT slave station input/output module, eachly need external power source, bring a lot of inconveniences to industry control scene, add the complicacy of engineering.
Communicated by EtherCAT between EtherCAT technology main website, slave station, generally have two kinds of modes, Ethernet 100,000,000 transmits and adopts low-voltage differential signal transmission.Two kinds of EtherCAT communications respectively have relative merits, and Ethernet 100,000,000 needs physical layer conversion chip, distance in transmitting, but transfer rate is lower; And low-voltage differential signal transmission speed is high, local high-speed response, but the pcb board level transmission being only applicable to local module.
Summary of the invention
One object of the present invention is to provide a kind of coupled communication plate based on EtherCAT technology, and this coupled communication plate adopts modular physical arrangement, realizes the telecommunication management function between EtherCAT main website and slave station and power management function.
For achieving the above object, technical scheme of the present invention is as follows:
Based on a coupled communication plate for EtherCAT technology, described coupled communication plate comprises: controller and the microprocessor be connected by spi bus with described controller; At least one external communication interface be electrically connected with described controller; The Bussing connector communicated to connect with described controller; The power conversion chip be electrically connected with described Bussing connector, described controller and described microprocessor; Be connected to the PHY chip between described controller and described external communication interface and transformer in turn; For carrying out the crystal oscillator of time synchronized to described controller, described chip.
In above-mentioned coupled communication plate, described PHY chip comprises the first PHY chip and the second PHY chip; Described transformer comprises the first transformer and the second transformer.
In above-mentioned coupled communication plate, described microprocessor comprises GPIO mouth.
In above-mentioned coupled communication plate, described GPIO mouth is connected with toggle switch.
In above-mentioned coupled communication plate, described GPIO Kou Wei 12 tunnel, described toggle switch is 3 16 bit switches.
In above-mentioned coupled communication plate, described microprocessor electrical connection static RAM and flash ROM.
In above-mentioned coupled communication plate, described microprocessor adopts the BM3105 chip of SPARCV8 framework, and described controller adopts ET1100 chip.
Beneficial effect of the present invention is as follows:
1. achieve the telecommunication management function between EtherCAT main website and slave station input/output module, input/output module need not directly and CPU in master station model calling, and modules circuit has carried out very large simplification.
2. there is local microprocessor in coupled communication plate, achieve the local High-speed Control function of coupled communication plate, when the change of rear class input/output module, have and power on fast again from opening function.Toggle switch location coupled communication plate ID website, can be placed in any position of EtherCAT network by reorganization equipment.
3. coupled communication plate realizes EtherCAT slave station power management function, and from external power source power taking 24V, supply Bussing connector, each input/output module of rear class directly need not separately from external electricity from Bussing connector power taking, and structure is simple.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is coupled communication plate the general frame;
Fig. 2 is coupled communication plate overall construction drawing;
Fig. 3 is that EtherCAT slave station network forms block diagram;
Fig. 4 is from station control and EEPROM, between by I2C bus connection diagram;
Fig. 5 be between station control and two PHY chip by MII mouth connection diagram;
Fig. 6 is annexation schematic diagram between PHY chip, transformer, network interface;
Fig. 7 is crystal oscillating circuit and clock buffer, relation schematic diagram from station control and two PHY chip;
To be microprocessor by GPIO mouth to be connected with 16 toggle switchs and to extend out SRAM and FLASH schematic diagram by 16 bit address data buss Fig. 8;
Fig. 9 is by spi bus connection diagram from station control and microprocessor;
Figure 10 is the 24V voltage transitions of external power source input is 5V V diagram;
Figure 11 is that coupled communication plate is used by oneself voltage transitions schematic diagram.
Embodiment
In order to be illustrated more clearly in the present invention, below in conjunction with preferred embodiments and drawings, the present invention is described further.Parts similar in accompanying drawing represent with identical Reference numeral.It will be appreciated by those skilled in the art that specifically described content is illustrative and nonrestrictive, should not limit the scope of the invention with this below.
A kind of coupled communication plate based on EtherCAT technology comprises: controller and the microprocessor be connected by spi bus with described controller; At least one external communication interface be electrically connected with described controller; The Bussing connector communicated to connect with described controller; The power conversion chip be electrically connected with described Bussing connector, described controller and described microprocessor; Be connected to the PHY chip between described controller and described external communication interface and transformer in turn; For carrying out the crystal oscillator of time synchronized to described controller, described chip.
In described coupled communication plate, PHY chip comprises the first PHY chip and the second PHY chip; Transformer comprises the first transformer and the second transformer; Microprocessor comprises GPIO mouth; GPIO mouth is connected with toggle switch; GPIO Kou Wei 12 tunnel, toggle switch is 3 16 bit switches.
In described coupled communication plate, microprocessor electrical connection static RAM and flash ROM; Microprocessor adopts the BM3105 chip of SPARCV8 framework, and controller adopts ET1100 chip.
Embodiment 1
As shown in Figure 1, Figure 2 and Figure 3, a kind of EtherCAT coupled communication plate based on domestic microprocessor, comprise communications portion and power unit, concrete comprises: microprocessor, from station control, EEPROM, PHY circuit, Bussing connector, 24V turns 5V, 5V and turns power-switching circuit and the Ethernet network interface that 3.3V and 3.3V turns 1.8V.
Communication between the CPU module of EtherCAT main website and slave station is communicated by EtherCAT, adopts Ethernet 100,000,000 to transmit, and uses 100Base-TX (Category-5 twisted pair) transmission medium far away; Between the modules of slave station, adopt EtherCAT bus communication, use EtherCATLVDS Signal transmissions; Fieldbus in design adopts EtherCAT bus, and utilizes one net characteristic on earth.
In the present embodiment, slave station comprises coupled communication plate, rear class input and output I/O stack; Rear class input and output I/O stack comprises the slave station modules such as digital quantity input module, digital output module, Analog input mModule, analog output module, be connected by Bussing connector between coupled communication plate with rear class input/output module, adopt EtherCAT bus communication, use EtherCATLVDS Signal transmissions; Bussing connector by EBUS Signal transmissions to rear class input/output module; Powered to rear class input/output module by Bussing connector simultaneously.In the present embodiment, Bussing connector adopts the European board of 32 pin.
EtherCAT slave station Physical layer and data link layer protocol is realized from station control.Adopt Bei Fu company chip ET1100 from station control, mode of operation is 01 pattern, namely provides 3 communication interfaces: port0, port1 and port2; The Physical layer of port0, port2 adopts MII mouth pattern, transmit for Ethernet, communicate for EtherCAT between main website with slave station, the first Ethernet interface that the corresponding coupled communication plate of port0 with port1 communication interface difference is connected with external unit and the second Ethernet interface; Port1 is set to EBUS form, for the communication of coupled communication plate and slave station rear class input/output module.Main website inputs from the first Ethernet interface (interface corresponding with port0) to the data stream of slave station, by the function switching signal from station control, become LVDS signal, the each input/output module of rear class is transferred to by the EBUS mouth (interface corresponding with port1) on Bussing connector, after circulation, be transferred to same as station control again, be converted to Ethernet 100,000,000 signal transmission, pass main website back by the first Ethernet interface (interface corresponding with port0).Second Ethernet interface (interface corresponding with port2) is for expanding slave station topological structure.In order to improve, EBUS communication is anti-altogether, the ability of differential mode electromagnetic interference (EMI), EBUS Low voltage differential signaling line on increase common mode, differential mode inductance respectively.
As shown in Figure 4, in the present embodiment, EEPROM selects AT24C64B, capacity 64K, is connected with from station control ET1100 by iic bus, for storing the configuration data from station control.
As shown in Figure 5 and Figure 6, be connected with one end of the first PHY chip from station control ET1100 by MII mouth (port0), be connected with one end of the second PHY chip by MII mouth (port2), according to ET1100 configuration information, the address of two PHY chip is corresponding with the port mouth of use, be respectively 000,010; Two PHY chip adopt KSZ8051 type; The other end of the first PHY chip is connected with first transformer one end, and the other end of the second PHY chip is connected with second transformer one end; First transformer and the second transformer adopt HX1188 type; The other end of the first transformer is connected with the first Ethernet interface, and the other end of the second transformer is connected the first Ethernet interface with the second Ethernet interface and the second Ethernet interface is RJ45 interface.
As shown in Figure 7, a crystal oscillator is shared from station control ET1100 and the first PHY chip and the second PHY chip, adopt the clock buffer CDCV304PW of four-way, crystal oscillator provides clock to 3 chips simultaneously, the input end of clock buffer is connected with crystal oscillator, the output terminal of clock buffer respectively with from station control ET1100, the first PHY chip is connected with the second PHY chip.
As shown in Figure 8, EtherCAT network contains some coupled communication plates, different coupled communication plates is distinguished with ID website, realize the distribution (every 4 road GPIO mouths control a toggle switch) to ID website by the toggle switch of 3 16 be connected with microprocessor BM3105 Shang 12 road GPIO mouth, the coupled communication plate being assigned with ID website can be placed in any position of EtherCAT network; Microcontroller extends out static RAM SRAM and flash ROM FLASH by 16 bit data address buss.
As shown in Figure 9, the microprocessor of the present embodiment adopts domestic SPARCV8 type 32 bit CPU chip BM3105, realizes described EtherCAT slave station application layer protocol, is communicated, do not need by CPU in master station by spi bus with ET1100, realize local High-speed Control function; When slave station rear class input/output module changes, after powering on, whole system is fast again from opening; When exporting interrupt request singal to microprocessor from station control, microprocessor responds various protocol application layer event interrupt and the clock sync break of EtherCAT communication by this look-at-me; Two signals are exported to microprocessor from station control, whether effective for judging that field data exports; Between microprocessor BM3105 and ET1100 except SPI communication interface, also comprise SPI_IRQ look-at-me, this signal is produced by ET1100 and interrupts to the IRQ1 of microprocessor BM3105, be that ET1100 application-layer events is interrupted and clock sync break signal, BM3105 is interrupted and clock sync break by the various application-layer events of this look-at-me response EtherCAT communication.
In the present embodiment, power management function is as follows:
As Fig. 2,3, shown in 10 and 11, after outside 24V power supply input, increase protection circuit (electrostatic prevention, anti-common mode, anti-differential mode, anti-overvoltage, current-limiting circuit) process; 24V voltage after process is converted to 5V voltage by step-down voltage regulator LM2677, part supply coupled communication plate, and a part exports to rear class input/output module by Bussing connector; On the other hand, the 5V voltage being transferred to coupled communication plate is converted to 3.3V voltage through synchronous buck regulators chip LM2853MH-3.3,3.3V voltage is converted to 1.8V through voltage regulator chip LP3878MR, and the voltage of 3.3V and 1.8V is for coupled communication plate self.
Obviously; the above embodiment of the present invention is only for example of the present invention is clearly described; and be not the restriction to embodiments of the present invention; for those of ordinary skill in the field; can also make other changes in different forms on the basis of the above description; here cannot give exhaustive to all embodiments, every belong to technical scheme of the present invention the apparent change of extending out or variation be still in the row of protection scope of the present invention.
Claims (7)
1. based on a coupled communication plate for EtherCAT technology, it is characterized in that, described coupled communication plate comprises: controller and the microprocessor be connected by spi bus with described controller; At least one external communication interface be electrically connected with described controller; The Bussing connector communicated to connect with described controller; The power conversion chip be electrically connected with described Bussing connector, described controller and described microprocessor; Be connected to the PHY chip between described controller and described external communication interface and transformer in turn; For carrying out the crystal oscillator of time synchronized to described controller, described chip.
2. coupled communication plate according to claim 1, is characterized in that: described PHY chip comprises the first PHY chip and the second PHY chip; Described transformer comprises the first transformer and the second transformer.
3. coupled communication plate according to claim 1, is characterized in that: described microprocessor comprises GPIO mouth.
4. coupled communication plate according to claim 3, is characterized in that: described GPIO mouth is connected with toggle switch.
5. coupled communication plate according to claim 4, is characterized in that: described GPIO Kou Wei 12 tunnel, and described toggle switch is 3 16 bit switches.
6. the coupled communication plate according to claim 1 or 3, is characterized in that: described microprocessor electrical connection static RAM and flash ROM.
7. coupled communication plate according to claim 1, is characterized in that: described microprocessor adopts the BM3105 chip of SPARCV8 framework, and described controller adopts ET1100 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510955045.9A CN105404211A (en) | 2015-12-17 | 2015-12-17 | Coupling communication plate based on EtherCAT technology |
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| CN201510955045.9A CN105404211A (en) | 2015-12-17 | 2015-12-17 | Coupling communication plate based on EtherCAT technology |
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| CN105404211A true CN105404211A (en) | 2016-03-16 |
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Cited By (9)
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|---|---|---|---|---|
| CN106254195A (en) * | 2016-08-18 | 2016-12-21 | 深圳市德堡数控技术有限公司 | EtherCAT distributed I/O board and the network equipment |
| CN107688518A (en) * | 2017-08-31 | 2018-02-13 | 广东欧珀移动通信有限公司 | More multiplexing test circuits and Related product |
| CN107942839A (en) * | 2017-12-29 | 2018-04-20 | 中国电子信息产业集团有限公司第六研究所 | Pulse output card |
| CN109787875A (en) * | 2018-12-10 | 2019-05-21 | 大族激光科技产业集团股份有限公司 | Communication bus converting system |
| CN110912793A (en) * | 2019-12-30 | 2020-03-24 | 江阴拓普电气有限公司 | Power supply communication bus system |
| CN111342709A (en) * | 2020-02-27 | 2020-06-26 | 超同步股份有限公司 | Multi-servo motor control system |
| CN111371658A (en) * | 2020-02-21 | 2020-07-03 | 深圳市海弘装备技术有限公司 | EtherCAT bus control system |
| CN112346416A (en) * | 2020-10-19 | 2021-02-09 | 苏州创鑫激光科技有限公司 | Laser device based on EtherCAT bus and control device and system thereof |
| CN112769659A (en) * | 2019-10-21 | 2021-05-07 | 中电智能科技有限公司 | Topology board card and topology system |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106254195A (en) * | 2016-08-18 | 2016-12-21 | 深圳市德堡数控技术有限公司 | EtherCAT distributed I/O board and the network equipment |
| CN107688518A (en) * | 2017-08-31 | 2018-02-13 | 广东欧珀移动通信有限公司 | More multiplexing test circuits and Related product |
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| CN107942839A (en) * | 2017-12-29 | 2018-04-20 | 中国电子信息产业集团有限公司第六研究所 | Pulse output card |
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| CN112769659A (en) * | 2019-10-21 | 2021-05-07 | 中电智能科技有限公司 | Topology board card and topology system |
| CN110912793A (en) * | 2019-12-30 | 2020-03-24 | 江阴拓普电气有限公司 | Power supply communication bus system |
| CN111371658A (en) * | 2020-02-21 | 2020-07-03 | 深圳市海弘装备技术有限公司 | EtherCAT bus control system |
| CN111342709A (en) * | 2020-02-27 | 2020-06-26 | 超同步股份有限公司 | Multi-servo motor control system |
| CN112346416A (en) * | 2020-10-19 | 2021-02-09 | 苏州创鑫激光科技有限公司 | Laser device based on EtherCAT bus and control device and system thereof |
| CN112346416B (en) * | 2020-10-19 | 2022-09-20 | 苏州创鑫激光科技有限公司 | Laser device based on EtherCAT bus and control device and system thereof |
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