Term Definition
Latency The time from when a message leaves a wireless field device until it reaches the
Gateway.
Netmask A string of 1's and 0's that mask out or hide the network portion of an IP address
leaving only the host component.
Network I.D. Numeric code that associates wireless field devices to the Gateway. This code
must be identical in the device and the gateway.
Network
Manager
Operational function within the Smart Wireless Gateway that automatically
handles all device connections and scheduling of wireless data.
NTP Network Time Protocol. Used to keep the system time synchronized with a
network time server.
Path A wireless connection between two devices in a wireless network. Also referred
to as a hop.
Path Stability A measure of connectivity between two devices in the wireless network.
Calculated as the ratio of the number of received messages over the number of
expected messages.
Primary
Interface
Ethernet 1 or Fiber Optic port that is used for primary host communications.
Private
Network/LAN
A local connection between a Smart Wireless Gateway and a PC/laptop. This
network is used for commissioning and configuration of the Gateway.
Reliability A measure of connectivity between the Gateway and a wireless field device.
Calculated as the ratio of the number of received messages over the number of
expected messages. Takes into account all paths.
RSSI Received signal strength indication (dBm) for the wireless field device.
Secondary
Interface
Ethernet 2 port that is used for backup connection or a maintenance port for
local access.
Security Setup
Utility
A software application that enables secure communications between the
Gateway and host system, asset management software, data historians, or
other applications.
Self-Organizing
Network
Mesh network technology in which a network manager automatically handles all
device connections and scheduling of wireless data.
Service Denied The device has been denied bandwidth and can not publish its regular updates.
TCP/IP Transmission Control Protocol/Internet Protocol. The protocol that specifies
how data is transmitted over Ethernet.
Update Rate The interval in which a wireless field device transmits measurement and status
data to the Gateway. Same as Burst Rate.
Wireless Field
Device(s)
WirelessHART field devices that are a part of the wireless field network.
Wireless Field
Network
WirelessHART network, consisting of Smart Wireless Gateway and multiple
wireless field devices.
Wireless Plant
Network
Industrial WiFi network, used to integrate the Wireless Field Network into the
control network.
Glossary Reference Manual
September 2020 00809-0200-4410
54 Emerson.com/Rosemount
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