A
A
n
n
n
n
e
e
x
x
Abbreviation Term
Description
Process Control System
High level process control system
PCS
Programmable Local
Controller
Low level control unit
PLC
PROFIBUS-DP
Fieldbus communication protocol with cyclic data transfer
(V0).
PROFIBUS-DP/V1
Fieldbus communication protocol, extension of PROFIBUS-
DP allowing acyclic data transfer and multi master (V1).
PROFIBUS-DP/V2
Fieldbus communication protocol, extension of PROFIBUS-
DP allowing time stamp and communication between
master and slave (V2).
Remote Control Unit
Local control unit with pushbutton and indicator to operate a
device (e.g. motor) from field level
RCU
Standard No. 232 for PC communication, established by
EIA (Electronics Industries Association, USA)
RS232
Communication interface standard from EIA (Electronics
Industries Association, USA), operating on voltages
between 0V and +5V. RS-485 is more noise resistant than
RS-232C, handles data transmission over longer distances,
and can drive more receivers
RS485
Real Time Clock
Integrated clock function in devices used to generate time
and date information if a remote clock system is not present
RTC
Software Local
A Control Access term describing that the M
Control
accepts
its commands from the hardwired inputs as a result of either
the PCS or M
View
passing the Control Access Authority to
Soft-Local.
Note: Does not require the hardwired local input to be set to
true.
Simple Network Time
Protocol
A protocol used for time synchronization in Control Network
through Ethernet
SNTP
Switchgear Bus Network
Term used to describe the internal switchgear
communication network, between M
Link
and M
Control
TCP/IP
Transmission Control
Protocol / Internet Protocol
TCP/IP is a high-level connection oriented, reliable, full
duplex communication protocol developed for integration of
the heterogenous systems.
7
7
4
4
ABB MNS
i
S System Setup & Operation Quick Guide / System Release 6.0 – Rev.2 / Aug. 2011
