ABB M101 Manual page 12

T ER M I N O LO G Y
RS485
RTC
SNTP
TCP/IP
UTC
4
Real Time Clock
Software Local
Simple Network
Time Protocol
Switchgear Bus
Network
Transmission Con-
trol Protocol / Inter-
net Protocol
Trip
Coordinated
Universal Time
Warning
Communication interface standard from EIA
(Electronics Industries Association, USA), oper-
ating 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.
Integrated clock function in devices used to
generate time and date information if a remote
clock system is not present
A Control Access term describing that the M10X
accepts its commands from the hardwired in-
puts as a result of either the PCS or MView
passing the Control Access Authority to Soft-
Local.
Note: Does not require the hardwired local in-
put to be set to true.
A protocol used for time synchronization in
Control Network through Ethernet
Term used to describe the internal switchgear
communication network, between MNS Digital
Gateway and M10X
TCP/IP is a high-level connection oriented, relia-
ble, full duplex communication protocol devel-
oped for integration of the heterogeneous sys-
tems.
A consequence of an alarm activated or an ex-
ternal trip command from another device to
stop the motor or trip the circuit breaker.
Coordinated Universal Time is the international
time standard. It is the current term for what
was commonly referred to as Greenwich Merid-
ian Time (GMT). Zero (0) hours UTC is midnight
in Greenwich England, which lies on the zero
longitudinal meridian. Universal time is based
on a 24 hour clock.
A warning is defined as status transition from
any state to pre-alarm state to inform in ad-
vance before an alarm level is reached.
GEN ER A L
1TG C 9 0 8 0 0 4 M 0 2 0 1