Siemens SENTRON PAC5200 Device Manual page 262

G
Gateway
H
Holding register
I
IEC
Indication off
Indication on
+Inf
IP
IP address
J
JavaScript
K
KeepAlive
L
LED
Limit violation
LSB
M
MAC-Address
MBAP
MBAP Header
262
Enables networks based on different protocols to communicate with each
other
Area for representing data in Modbus communication
International Electrotechnical Commission, standards organization; Com-
munication standard for substations and protection equipment
The status of the indication changes from ON to OFF, that is the indication
is deleted.
The status of the indication changes from OFF to ON, that is the indication
is currently present.
Stands for Infinity and denotes a counter overflow. Extremely large number
or infinitely positive number
Internet Protocol
Addresses in computer networks based on the Internet protocol
Script language mainly used by Web browsers
KeepAlive on TCP level is a feature intended to verify the availability and
functioning of the communication partner (client) and to maintain a TCP net-
work link if the network is inactive.
The server sends KeepAlive messages (TCP packets without data) to the
client in regular intervals (KeepAlive time) while the network is inactive, and
the client responds to these messages.
If the client does not respond to a KeepAlive message, the server assumes
that the link is down or the client is inactive and closes the TCP link.
Light-Emitting Diode
A value exceeding or falling under a parameterized limiting value.
Least Significant Bit
Media Access Control address: Hardware address that clearly identifies the
device on the network.
Modbus Application Protocol
Header of a Modbus TCP message consisting of these 4 parts: Transaction
identifier (2 bytes), protocol identifier (2 bytes), length (2 bytes), unit identifier
(1 byte).
SENTRON PAC5100/5200, 7KM5212/5412, Device Manual
E50417-H1040-C568-A1, Edition 03.2015