WESTLOCK CONTROLS CORPORATION
280 N. MIDLAND AVE., STE. 258, SADDLE BROOK, NJ 07663 TEL: 201-794-7650 FAX: 201-794-0913
www.westlockcontrols.com
10/5/2013
TECH-477/D.W.O. 21424
Page 16 of 206
Definitions and Acronyms
Acronym
Definitions
IP
Internet Protocol
IS.
Intrinsically Safe
ISA
The International Society for Measurement and Control
ISO
International Organization of Standards
kbit/s
kilobits per second
kHz
kilohertz
LAN
Local Area Network
LAS
Link Active Scheduler
LO
Local Override mode
mA
Milliampere
Man
Manual mode
Mbit/s
Megabits per second
MV
Measured Variable
OD
Object Dictionary
OOS or O/S
Out Of Service mode
OSI
Open Systems Interconnect
PC
Personal Computer
PDU
Protocol Data Unit
PHY
Physical Layer
PID
Proportional, Integral, Derivative
PLC
Programmable Logic Controller
PV
Process Variable
RCas
Remote-Cascade mode
Rout
Remote-Output mode
SW
Software
TB
Transducer Block
TCP/IP
Transport Control Protocol/Internet Protocol
VCR
Virtual Communication Relationship
VFD
Virtual Field Device