[introduction] aether net APL (advanced physics layer) define aether net communication is mixed in the sensor of process industry carry out implement the pertinent information that medium applying, will release according to IEC standard. It with the layer of physics of net of aether of new 10BASE-T1L (IEEE802.3cg-2019) that approved on November 7, 2019 the standard is a foundation, appoint the explosion proof method that be carried out in man-trap and uses. Lead process automation company is in PROFIBUS And PROFINET International (PI) , ODVA, inc. With FieldComm Group? Standard frame issues a joint efforts, make aether net APL can cross agreement of industrial aether net to use, quicken its deploy.

Aether net APL (advanced physics layer) define aether net communication is mixed in the sensor of process industry carry out implement the pertinent information that medium applying, will release according to IEC standard. It with the layer of physics of net of aether of new 10BASE-T1L (IEEE802.3cg-2019) that approved on November 7, 2019 the standard is a foundation, appoint the explosion proof method that be carried out in man-trap and uses. Lead process automation company is in PROFIBUS And PROFINET International (PI) , ODVA, inc. With FieldComm Group? Standard frame issues a joint efforts, make aether net APL can cross agreement of industrial aether net to use, quicken its deploy.

Aether net APL why very important? Aether net APL will pass implementation tall bandwidth, and build with spot equipment without seamed aether net join changes process automation field. It settled the challenge that restricts the spot to use aether network all the time up to now. These challenges include power, bandwidth, wiring, distance and the use in man-trap. Through be aimed at palm the ground upgrades and verdancy ground installation settles these relevant challenges, aether net APL will conduce to obtain the new opinion that cannot get before, run process variable, auxiliary parameter, capital fund state feedback field to close together for example, do not have them seam convey to control a layer. These new understanding will connect associate spot to arrive the network of shirt-sleeve aether network of the cloud (refer to a graph please 1) , let opinion of data analysis, operation and productivity rise become a possibility.

Graph 1. Aether net APL is used in process automation, implementation is not had seam aether net join.

In process automation application, should come true to replace 4 MA to correspond to 20 MA parts of an apparatus or spot bus line with aether net APL (Foundation Fieldbus or PROFIBUS Pa) target, need is mixed to sensor carry out implement provide electric power and data at the same time. The field uses in process automation, the distance between spot class parts of an apparatus and control system to having technology of layer of physics of industrial aether net it is an enormous challenge all the time, normally limitation of requirement cable length is in this technology 100 M less than. And process automation application needs to be as long as the distance of 1 Km, and need suits 0 areas (intrinsic safety) parts of an apparatus of spot of low power comsumption, function is stable and reliable, because this process automation needs,one kind can implement the new method of technology of layer of aether net physics. This kind of new method is aether net APL.

Aether net APL is opposite with balance of full duplex operation, dc, dot the function of 10BASE-T1L physics layer of bit of communication plan is a foundation, PAM 3 modulation is used below rate of 7.5 MBd symbol and 4B3T encode. It supports pattern of two kinds of range: Be as long as when 1000 M cable, peak value is 2.4 V; Relatively the peak value below stone’s throw is 1.0 V. Pattern of range of 1.0 V peak value is meant, this new physical layer technology also can be in explosion proof system (use in Ex) environment, contented and strict the greatest energy resources limits a demand. 10BASE-T1L support uses technology of double skeining thread to realize Sunday run to transmit, carry sheet screen double skeining thread transmits electric power and data at the same time.

Be in for respect of spot equipment power supply, aether net APL is OK highest 500 MW is offerred in 0 area application, and the 4 MA nowadays can be offerred only to 20 MA system make an appointment with 36 MW. In be not intrinsic safety application, what use cable according to place is different, power can be as high as 60 W. Because network brim provides higher power, because this can make appliance has the new site parts of an apparatus that enhances character and function, and 4 MA is restricted to power of presence of 20 MA parts of an apparatus, spot bus line also no longer applicable. For example, use additional power now, can realize taller measurement function, enhance the data processing ability of the brim. This will disentomb the valuable understanding of concerned process variable, process variable can be passed now in spot class parts of an apparatus (spot asset) on the Web server visit that move, the improvement that urges process shedding and asset government finally and optimize.

Want to use the rich data set that includes these valuable new understanding, need the communication link of taller bandwidth, span the data set of these new site parts of an apparatus process installation equipment is transmitted to factory class infrastructure or high in the clouds undertake handling. Aether net APL need not the complex gateway with big power consumption, can span IT (IT) and operation technology (OT) region realizes network of shirt-sleeve aether network. Carry this confluence network, can simplify installation and parts of an apparatus change, accelerate the network is debugged and configure. Will accelerate software finally to update, simplify prime cause analysis and spot class parts of an apparatus are safeguarded.

The advantage of solution of aether net APL

Undertake confluence through be based on aether net APL, need power consumption no longer big, cost is high and complex gateway. Can transfer from implementation of very dispersive infrastructure of spot bus line thereby, these dispersive infrastructure founded island of a few data, inside to visitting spot class parts of an apparatus data created restriction. Divide these gateway through moving, reduced the installation cost of these conventional device and complexity significantly, eliminated the data island that its found.

Up to now, process automation application uses the traditional communication level that the watch shows 1 times all the time, and the many limitation that standard of new 10BASET1L aether net overcame traditional standard. 10BASE-T1L hopeful repeats use existing already installed cable, through be based on the aether net APL of 10BASE-T1L physics layer, the palm ground that installs for process automation upgrades created an opportunity.

Express 1. Use HART? 4 MA corresponds to bus line of 20 MA, spot, 10BASE-T1L the technology is compared

Want to have communication with the parts of an apparatus that supports aether net APL, need has compositive medium to visit control (the lead plane processor of MAC) or the switching equipment that have 10BASE-T1L port (refer to a graph 2) .

Graph 2. The data of parts of an apparatus of class of spot of aether net APL that has 10BASE-T1L PHY joins.

Wiring of aether net APL and network develop attack

10BASE-T1L standard did not define specific transmission medium (cable) , defined passageway model however (echo loss and insert loss to ask) . This passageway model suits to be used at cable of bus line of the A of PROFIBUS PA and Foundation Fieldbus spot at present very much; The 4 MA that because this is certain,already installed can repeat together with aether net APL to 20 MA cable use. Compare with more complex wiring phase, odd the advantage of a wiring of double skeining thread is cost lower, size is smaller, installation is more convenient.

Graph the proposal network develop of APL of net of 3 indication aether attacks, call artery and develop of branch line network to attack. Trunk cable can is as long as 1 Km, extent of its PHY peak value is 2.4 V, be located in 1 area, 2 partition. Branch line cable can is as long as 200 M, extent of its PHY peak value is 1.0 V, be located in 0 areas, 1 partition. Power source switching equipment is located in control class, provide function of aether network switching equipment, and to cable power supply (pass data line) . Spot switching equipment is located in the spot layer class of dangerous area, by cable power supply. Spot switching equipment provides function of aether network switching equipment, the spot class parts of an apparatus that gets on branch line cable receives trunk cable repeatedly, and to power supply of spot class parts of an apparatus.

Join on a trunk cable many switching equipment, can let more spot class parts of an apparatus receive a network repeatedly.

 

Graph 3. The prospective brim of APL of use aether net and 10BASE-T1L is not had to the cloud seam join technology.

Parts of an apparatus of APL of new aether net, create new opportunity

Aether net APL will conduce to implementation having those who seam installation of join process automation to transfer to the cloud to the spot, include the man-trap of food and beverage, pharmacy, oil and establishment of natural gas installation. Because provided more and usable power, can support consequently have the parts of an apparatus of spot of APL of new-style aether net that enhances character and function. These new parts of an apparatus or appliance will use powerful data to analyse a function to see the data set with rich lock, use at carrying out cloud computation, use feasible opinion to drive executive process automation. Roll out new business model to also will become a possibility for process industry now, make circuit in order to offer more complex course, the more new understanding that before carrying order, obtains creates greater value.

About ADI company Chronous? Aether net solution combination and the more information that how its quicken change to be network of network of aether of real world industry.

(Origin: ADI company)

 

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