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SENTRON PAC5100/5200, 7KM5212/5412, Device Manual
E50417-H1040-C568-A1, Edition 03.2015
MIB
Management Information Base: Information which can be retrieved or mod-
ified via the SNMP network management protocol
Modbus
The Modbus protocol is a communication protocol based on a client-server
architecture.
Modbus TCP
Modbus
T
ransmission
C
ontrol
P
rotocol: Modbus protocol type for transmit-
ting data as TCP/IP packets; TCP port 502 is reserved for Modbus TCP.
MSB
M
ost
S
ignificant
B
it
N
NaN
N
ot
a
N
umber means "invalid": Result of an invalid computing operation
NTP
N
etwork
T
ime
P
rotocol: Standard for synchronizing clocks in computer sys-
tems using packet-based communication networks
P
PQ
P
ower
Q
uality
R
RJ45
Ethernet plug connector
RTC
R
eal-
T
ime
C
lock
S
Server
Sends data upon request by the client
SNMP
S
imple
N
etwork
M
anagement
P
rotocol: Serves for monitoring and control-
ling network elements of a central station
SNTP
S
imple
N
etwork
T
ime
P
rotocol: Simplified version of the NTP
SW
S
oft
w
are: Program executed on a computer
STP
S
hielded
t
wisted-
p
air is the cable for 100Base-T (Ethernet)
Stratum
Each NTP server is synchronized by a high-precision time standard or by
another NTP server. The stratum is the position of the NTP server in the hi-
erarchy of NTP servers polled by the device. The best stratum is 1, each fur-
ther level in the NTP server hierarchy increases the stratum by 1.
Subnet mask
Bit mask in the network protocol that defines how many IP addresses the
computer network encompasses. Together with the IP address of a device,
the subnet mask defines which IP addresses the device searches in its own
network and which IP addresses it tries to reach via routers in other net-
works.
T
TCP/IP
T
ransmission
C
ontrol
P
rotocol/
I
nternet
P
rotocol: Family of network proto-
cols
U
UTC
U
niversal
T
ime
C
oordinated: Universal time standard referred to the time at
the prime meridian
Summary of Contents for SENTRON PAC5100
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