Section 10 GlossaryAC Alternating currentAPI Application programming interfaceAPN Access Point NameD-NAT Destination network address translationDHCP Dynamic Host Configuration ProtocolDMZ De-militarized zoneDNS Domain Name SystemEMC Electromagnetic compatibilityEthernet A standard for connecting a family of frame-based computernetworking technologies into a LANGOOSE Generic Object-Oriented Substation EventHMI Human-machine interfaceHTTPS Hypertext Transfer Protocol SecureICMP Internet Control Message ProtocolIEC International Electrotechnical CommissionIEC 61850 International standard for substation communication andmodelingIP Internet protocolIP address A set of four numbers between 0 and 255, separated by periods.Each server connected to the Internet is assigned a unique IPaddress that specifies the location for the TCP/IP protocol.KPI Key performance indicatorL2TP Layer 2 tunneling protocolLAN Local area networkLCD Liquid crystal displayM2M Machine to machineN/A Not applicable or availableNTP Network time protocolPC 1. Personal computer2. PolycarbonatePCM600 Protection and Control IED Manager1MRS758861 A Section 10GlossaryARM600 55User Manual