Practical Industrial Data Networks:Design, Installation and ...

304 Practical Industrial Data Networks: Design, Installation and TroubleshootingEBCDICEDACEFTPOSEIAextended binary coded decimal interchange code an eight bitcharacter code used primarily in IBM equipment – the codeallows for 256 different bit patternserror detection and correctionelectronic funds transfer at the point of saleElectronic Industries Association – a standards organizationin the USA specializing in the electrical and functionalcharacteristics of interface equipmentEISAenhanced industry standard architectureEMI/RFI electromagnetic interference/radio frequency interference –‘background noise’ that could modify or destroy datatransmissionEMSEmulationENQEOTEPAEPREPROMError rateESCESDETBEthernetETXEven parityexpanded memory specificationthe imitation of a computer system performed by acombination of hardware and software that allows programsto run between incompatible systemsenquiry (ASCII Control-E)end of transmission (ASCII Control-D)enhanced performance architectureearth potential riseerasable programmable read only memory – non-volatilesemiconductor memory that is erasable in ultraviolet light andreprogrammablethe ratio of the average number of bits that will be corruptedto the total number of bits that are transmitted for a data linkor systemescape (ASCII character)electrostatic dischargeend of transmission blockname of a widely used LAN, based on the CSMA/CD busaccess method (IEEE 802.3) – Ethernet is the basis of theTOP bus topologyend of text (ASCII Control-C)a data verification method normally implemented in hardwarein which each character must have an even number of ‘ON’bitsFaradFASFCCFCSFDMFIBFIFOunit of capacitance whereby a charge of one coulombproduces a one volt potential differencefieldbus access sublayerFederal Communications Commissionframe check sequence – a general term given to the additionalbits appended to a transmitted frame or message by thesource to enable the receiver to detect possible transmissionerrorsfrequency division multiplexer – a device that divides theavailable transmission frequency range in narrower bands,each of which is used for a separate channelfactory information busfirst in, first out