以太网高级物理层（Ethernet - APL）——OPC UA与OPC UA FX进军过程自动化领域.pdf

1、OPC Day International 2025May 19th 23rd,2025Volker GollerTechnologist,Industrial Connectivity and Controls,Analog Devices IncVOPC Day International 2025May 19th 23rd,2025An 10MBit/s intrinsically safe Ethernet physical layer based on IEEE802.3cg-2019 10BASE-T1L.Long range up to 200m with intrinsic s

2、afety,1000m without.Single twisted pair cable transports data and power.Interface is polarity agnostic;it works both ways.Power provided in intrinsic safe zones is 15V and 0.54 or 1.1W depending on class.OPC Day International 2025May 19th 23rd,20253Device is operated in an ignitable environment.Any

3、spark may cause a very expensive and maybe life-threatening event.Really translates to DO NOT CREATE ANY SPARKS!Some design parameters:Well below 2W per device,including stored energy(capacitors,inductors)Current limitation Fail-safe design Limited voltageOPC Day International 2025May 19th 23rd,2025

4、4T(x)=ADC(x)*k1+offsetVery long cableRemote IOTemperature TransmitterPhysicalSensorCurrent on Wire is between 4 and 20mA.Current is analog to measurement temperature.“Can read it with Multimeter!”Modern Transmitters convert the measured signal into digital,scale,filer and linearize the value.Then tu

5、rn that signal into a scaled loop current!There are different types of sensors.Many Transmitters got a build in USB interface to commission the device for the right senor type and scaling.In remote IO,the voltage drop across a sensing resistor is measured.The raw number must now be scaled(back)to th

6、e measured temperature,probably converted into the desired unit(K,C,F)and passed upstream to the PLC.Even simple conversions need to be parameterized(here k1,offset for each channel x)Sensor type,scaling,linearization,and many more parameters configurable.Finally,getting all these parameters right i