Juniper Publishers Brief Industrial Networks Data Transfer Protocols Characteristics Analysis

Juniper Publishers - Open Access Journal of Engineering Technology


Authored by : Vladlen Shapo

Keywords

Keywords: Industrial networks; Protocols; Tunnelling; Internet; Control Networks
Abbreviations: IoT: Internet of Things; IIoT: Industrial Internet of Things; ACN: Architecture for Control Networks; AYIYA: Anything In Anything; CIP: Common Industrial Protocol; ODVA: Open Device Net Vendors Association; DNP3: Distributed Network Protocol Version 3


Opinion

During last 5-7 years in industry, at the different kinds of transport, in energetic field, etc. are very actively implementing data exchange technologies between separate devices, device groups and networks. These technologies based on Industry 4.0 (4th industrial revolution), IoT (Internet of Things), IIoT (Industrial Internet of Things) concepts. In accordance with these concepts a lot of different devices became smart, possessing of own CPUs, memory and different wired and wireless interfaces for external data exchange. Some of them (like complex PLCs) allow to unite different industrial network segments, having sufficient productivity and much lower cost compared to computers [1].
From the beginning of 90th years of 20th century in industry are very popular some protocols and data transfer technologies, most known are ASi, ProfiBus, Field Bus, HART, Mod Bus, CAN, BAC and so on. But in connection with Internet development and forth coming of absolutely new challenges were created some protocols, based on TCP/IP. These protocols allow to perform remote control of complex technical systems for enhancement of control quality, decreasing response time for force majeure situations and cost for control and exploitation of such systems. Protocols ProfiNet, Mod Bus/TCP, Ethernet/IP, Ether CAT became well known; they are compatible with previous generations, but allow to solve fundamentally new tasks. But in some situations by cost/productivity ratio win protocols and technologies, which don't have wide spread, but firmly hold theirs niche. Some of them are described below.

ACN (Architecture for Control Networks) is network control protocol, initially destined for entertainment industry [2]. It has open source code and maintains some subordinate protocols (Table 1).

AYIYA (Anything In Anything) is network protocol for tunnelling between IP-networks and controlling there [3]. Very often it's used for IPv6 packets transit through the networks based on IPv4 protocol. Network security is provided with absence of addresses and content of tunnelled packets falsification possibility. At least one of two tunnel endpoints allows mobile devices connecting.
CIP (Common Industrial Protocol) is the set of standards [4], which are maintained by Open Device Net Vendors Association (ODVA). CIP extensions are CIP safety, CIP Sync and CIP Motion protocols. CIP contains full set of requirements and possibilities for complex automation systems and their subsystems development from following sides: control, information security, motion organizing, informing. Some most important protocols and industrial data transfer technologies are based on CIP as well and briefly described below.

EtherNet/IP is open industry protocol, which uses standard Ethernet chips and cable systems, based also on IEEE 802.3 standard, and serve for input/output real time data exchange and information messages in Device Net and Control Net industrial networks. CIP provides common application level between networks, which doesn't depend on media (cable system). It allows to perform direct routing CIP messages in Ether Net/IP, Control Net and Device Net networks.

Depending on application requirements EtherNet/IP network may be stand alone or combined with Device Net or Control Net networks for additional flexible information and control services realization. EtherNet/IP transfers big user, configuration and input/output data volumes in the same high speed network; tightly associates technological and corporate operations; facilitates technical maintenance expenses decreasing thanks to existing network resources and technical facilities using; allows to commercial and industrial technological levels to coexist in the same network; works with TCP/IP and HTTP protocols.

DNP3 (Distributed Network Protocol, version 3) is a set of communication protocols [5], which are used for data transfer between components in automation systems. It's developed for communications between different types of equipment for data acquisition and control and described in IEEE 1815 standard. In SCADA systems DNP3 is used by SCADA master stations (control centers), Remote Terminal Units (RTU) and different Intelligent Electronic Device (IED). It uses 3 levels of OSI model (data link, transport and application) and contains Secure Authentication v5 mechanism, which allows to master or remote DNP3- system uniquely determine, that connection is established with legitimate user or host, but not with malicious user.

HART-IP (Highway Addressable Remote Transducer) protocol [6] based on standard Ethernet IEEE 802.3 hardware and cable systems (twisted pair and fiber optics) and with Wi-Fi IEEE 802.11 equipment, that's why it's possible to use it with standard network switches, routers, access points, cables and connectors. It may be used in redundant mesh or ring topologies and with PoE (Power over Ethernet) power supply standard by twisted pair Possible data transfer rates are 10Mbps, 100Mbps and 1Gbps. HART network, including devices working with Wireless HART protocol, is compatible with office and industrial LAN-switches, fiber optics media converters, Wi-Fi access points and equipment. Compatibility with classic HART protocol allows to put corresponding gateways into action and to work with classic analogue 4-20mA technologies. Using IP as base interaction protocol allows HART-IP to work in the same network together with multiplicity of protocols, based on IP and Ethernet (Figure 1).


More than 60 millions devices with HART protocol supporting are installed in the world. HART over Ethernet or HART-IP widen HART accessibility in local internal industrial networks with interconnection with corporate networks and ERP (Enterprise Resource Planning) software.


Variables and diagnostic data in HART are encapsulated in HART-IP packets. It allows to realize real time processes in existing corporate networks and to use corporate VPN (Virtual Private Networks).

For more articles in Open Access Journal of Engineering Technology please click on:
https://juniperpublishers.com/etoaj/index.php


To read more...Fulltext please click on:
https://juniperpublishers.com/etoaj/ETOAJ.MS.ID.555561.php

Comments

Post a Comment

Popular posts from this blog

Hydro-Morphometric Modeling for Flood Hazard Vulnerability Assessment of Old Brahmaputra River Basin in Bangladesh - Juniper Publishers

Image
Juniper Publishers - Open Access Journal of Engineering Technology Abstract The present research introduces hydro-morphometric modeling to assess flood hazard vulnerability in old Brahmaputra River Basin in Bangladesh. Hydro-morphometric modeling is a spatial analysis in a GIS environment that has been applied for the estimation of flood hazard vulnerability. In this study the developed methodology processes information of seven parameters namely basin, flow accumulation, flow direction, stream order, stream length, stream density and drainage density. By applying Horton's and Strahler's formula of stream order, stream density and drainage density of old Brahmaputra River Basin are calculated. According to Horton's stream density and drainage density reflects the runoff and discharge status of a basin which also revealed that basin having high stream density and drainage density is most vulnerable to flooding. The old Brahmaputra River Basin subdivide...
Read more

Juniper Publishers- Open Access Journal of Engineering Technology

Image
Risk Mitigation - What's Your Score? Authored By Philip Crosby This article examines conventional methods for risk identification and risk scoring using 'look-up' tables, and concludes that such methods are inherently flawed and offer false confidence in project management. The author suggests a series of searching questions to test the efficacy of traditional risk assessment in order to better prepare the project for review. Important further considerations are posed in relation to nonspecific, irrational risk exposure (i.e. Black Swans), and the author presents two approaches for improved preparedness against undefined risk. Ask about risk management in almost any complex project, and you're likely to be presented with some form of table listing various risks, often ranked by severity, with many of the highest risk exposures “mitigated” by control measures and demoted to safer (non-red!) scores. These conventional style risk plans, underpinned by like...
Read more

Juniper Publishers Reactive Power Compensation by Power Capacitor Method

Image
Juniper Publishers - Open Access Journal of Engineering Technology Authored by :  Fazal M Abstract Reactive power compensation play an important role in modern era because supplier companies take charges of it, if it exceeds a predetermined value so different companies enforce users to compensate it. In this paper, different topologies are discussed but the appropriate method which we are employing is power capacitor topology. This research has design programming based capacitor technique for 200 KVAR, 400V and detuning factor 7%. We understand standard and requirements regarding capacitor based topologies on the bases of price, qualities and different elements. Keywords: Detuning Capacitor; acceptor circuit; ZEE SILKO company Capacitor; Reactive power Introduction Reactive power compensation play an important role in this modern era because supplier companies take charges of it, if it exceeds...
Read more