5
01.GENERAL
Terminology
List of terms, acronyms, abbreviations and definitions used in the document:
Abbreviation Term Description
Alarm Alarm is defined as status transition from any state to abnormal state.
Status transition to abnormal state can be data crossing over the
predefined alarm limit.
DCS Distributed control system High level distributed control system
Local hardwiring
A control access term describing that the M10x accepts its
commands from the hardwired inputs when the local control
authority is enabled.
PCS Process control system High level process control system
MODBUS Fieldbus communication protocol
MODBUS RTU Fieldbus communication protocol
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)
PTC Positive temperature coefficient PTC thermistors are semiconductor elements with a very high positive
temperature coefficient.
RCU Remote control unit Local control unit with pushbutton and indicator to operate a device (eg,
motor) from field level.
Remote fieldbus A control access term describing that the M10x accepts its commands
from the fieldbus inputs when the remote control authority is enabled.
RS485 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.
STP Shielded twisted pair A type of cable commonly used for signal transmission.
TOL Thermal overload
protection
Protection against overheated caused by overload
Trip A consequence of an alarm activated or an external trip command from
another device to stop the motor or trip the circuit breaker.
MCC Motor control center Common term for a switchgear used for motor control and protection.
SOE Sequence of events A record of events with time stamp.
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