International Electrotechnical Commission
Glossary

Terms defined in IEC 62270


2.1analog-to-digital (a/d) conversion
2.2automatic control
2.3automatic generation control (AGC)
2.4automatic voltage control (AVC)
2.5automation hierarchy
2.6availability
2.7backplane
2.8bridge
2.9centralized control
2.10closed loop control
2.11cold standby
2.12computer-based automation
2.13control hierarchy
2.14control philosophy
2.15control processor
2.16data acquisition system
2.17database
2.18data bus
2.19device (electrical equipment)
2.20digital-to-analog (d/a) conversion
2.21distributed processing
2.22event
2.23expert system
2.24firmware
2.25gateway
2.26hot standby
2.27local control
2.28local control unit (LCU)
2.29logic (control or relay logic)
2.30manual control
2.31mean-time-between-failure (MTBF)
2.32mean-time-to-repair (MTTR)
2.33modem
2.34monitoring
2.35offsite control
2.36open loop control
2.37proportional integral derivative (PID), control system
2.38pixel
2.39programmable logic controller (PLC)
2.40protocol
2.41relay
2.42remote control
2.43reliability
2.44response time
2.45resistance temperature detector (RTD)
2.46scan (interrogation)
2.47scan cycle
2.48serial communication
2.49sequential control
2.50supervisory control and data acquisition (SCADA)
2.51user interface