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138
Acronym
Definition
HMI
Human Machine Interface (also called Graphical User Interface – GUI)
HVDI
High Voltage Digital Input
Hz
Hertz, unit of measure for frequency
I/O
Input/Output
IEC
International Electro-technical Commission
IED
Intelligent Electronic Device
IEEE
Institute of Electrical and Electronics Engineers
IP
Internet Protocol
LAN
Local Area Network
LED
Light Emitting Diode
LSB
Least Significant Bit
LVDI
Low Voltage Digital Input
MAC
Media Access Control
Mb
Mega bits, unit of measure
MB
Mega bytes, unit of measure
Mbps
Mega bits per second, unit of measure
MBps
Mega bytes per second, unit of measure
ms
milliseconds, unit of measure
MSB
Most Significant Bit
NC
Normally Closed
NO
Normally Open
NTP
Network Time Protocol
NVRAM
Non-Volatile Random Access Memory
OS
Operating System
PC
Personal Computer
RMA
Return Merchandise Authorization
RoHS
Restriction of Hazardous Substances
RTC
Real Time Clock
RTU
Remote Terminal Unit
RU
Rack Unit
Rx
Receive
SBO
Select before Operate
SCADA
Supervisory Control and Data Acquisition
SOE
Sequence of Events
SPST
Single Pole, Single Throw
SSH
Secure Shell
SWC
Surge Withstand Capability
T/C
Trip/Close
TB
Terminal Block
TD
Time Delay
Tx
Transmit
USB
Universal Serial Bus
UTC
Coordinated Universal Time
UTP
Unshielded Twisted Pair
VA
Volt Amps, unit of measure
VAC
Volts, Alternating Current, unit of measure
VDC
Volts, Direct Current, unit of measure
GE INFORMATION
APPENDIX E: LIST OF ACRONYMS
D20E ETHERNET I/O MODULE INSTRUCTION MANUAL
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