Yokogawa YFGW410 - Manual (Page 201)

<G3. Glossary of Terms and Abbreviations>
G3-1
IM 01W02D01-01EN
G3. Glossary of Terms and Abbreviations
Terms Definition
Access Control List
(ACL)
This is the list of the registered information of the IP address and the
device connection was allowed. It limits the access from any other
than a registered apparatus.
Backbone Router
(BBR)
This is a routing device connected to the backbone network that
provided in ISA100.11a. This device can be transported ISA100.11a
protocol to different network standards such as Ethernet.
Black List
This list defines the items that will be an issue, and used to disable or
block an applicable matter. In wireless communication, the commu-
nication patterns and frequencies that are registered in the list is not
output from the device.
Device Role
This is the functional classification of the field wireless device that
provided in ISA100.11a. There are two types of the routing device
and the IO device in the functional classification.
Duocast
This is the unique function of the wireless communication that
provided in ISA100.11a. Duocast provides support for high reliability
communication with backbone routers. Duocast transaction uses two
links for backbone router at the same time.
Ethernet
This is the networking standard that provided in IEEE 802.3. The
physical specifications and communication speed, there are multiple
types; 10BASE-T/TX, 100BASE-TX and others.
Extended Unique Identifier 64
(EUI-64)
This is a 64bit length ID specified in the IEEE.
Field Network
This is part of the plant network that provided in ISA100.11a. This is
the network between the host system and YFGW410.
Field Wireless Backbone Network
This is a backbone network that provided in ISA100.11a. This is the
network between YFGW510 and YFGW410.
Field Wireless Subnet
This is the unit of field wireless network that provided in ISA100.11a.
This unit is identified by the network ID (2 ~ 65535 decimal).
Gateway
This is the protocol transform function that provided in ISA100.11a.
To convert the process data and parameter data between the host
system and the field wireless network.
Hopping Pattern
This is a transition rule of the radio channel that provided in
ISA100.11a. The wireless communication is performed by change
the radio channel according to a predetermined rule.
IEEE1588v2
The precision time protocol for synchronizing the time between the
devices connected via a network such as Ethernet. The E2E 2-step
TC is one of the mode of operation that is provided in IEEE1588v2.
Join Key
This is the encryption key that provided in ISA100.11a. This is man-
datory encryption key to be used when the wireless field device joins
to the field wireless network.
Layer 2 Switch
(L2SW)
This is a device that relays the network. This determines the destina-
tion using the data of the data link layer included in the packet.
Layer 3 Switch
(L3SW)
This is a device that relays the network. This determines the destina-
tion in the network layer data contained in the packet.
Modbus
This is the protocol that is used to communicate with the host system
to read and write the process data. To read the data, use the input
register, and to write the data, use the holding register. Modbus/TCP
uses TCP/IP communication, and Modbus/RTU uses RS-232/485
communication.
Network Time Protocol
(NTP)
This is the time synchronization protocol that provided in RFC1305.
To synchronize the time using the network between a devices.
Packet Error Rate
(PER)
The percentage of the communication error is indicated by “total
number of failures / total number of communication”.
Provisioning
This is work to set the security and network information to enable the
field wireless device to be connected to the field wireless network.