WAGO-I/O-SYSTEM 758
Glossary
75
758-915
Bluetooth
®
ETHERNET Gateway
Manual
Version 1.1.0, applicable from FW/HW Version 01/01
R
Roaming
Roaming denotes the capability of a radio communications network user to
automatically dial into alternate radio networks for sending and receiving data.
Received Signal Strength Indication (RSSI)
The RSSI is an algorithm for determining the signal strength between wireless
participants. RSSI values allow, for example, the diagnosis of distances between
wirelessly connected devices that are too small or too large.
An RSSI value of 0 indicates that the reception signal is in the optimal range; a
negative value indicates poor reception, while a positive value indicates that the
devices are located very near to one another.
S
Signal strength
The signal strength is an indicator of reception quality. The higher the signal
strength, the better the reception.
Subnet
A subnet is a logical division of a network.
Subnet mask
Subnet masks can be used to manipulate the address ranges in the IP address area
in reference to the number of
sub nets
and hosts. A standard subnet mask is, for
example 255.255.255.0.
Switch
Switches are comparable to
bridges
, but with several outputs. Each output uses
the full ETHERNET bandwidth. Each output uses the full ETHERNET
bandwidth. A switch activates a virtual link between an input and an output port
for transmission of data. Switches learn which nodes are connected and filter the
information transmitted over the network accordingly.
T
Transmission channel
A transmission channel is a mechanism or resource that enables data transmission
over space or time.
W
WEG
Wireless ETHERNET gateway
