YOKOGAWA Vnet/IP, Technical Information

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TI 30A10A05-01E
Table Glossary terms (2/2)
Term Description
OPC A standard interface that supports the development of measurement control system
using COM or DCOM of Microsoft.
OPC DA Refers to OPC Data Access, which is an OPC based real-time data access.
Open Communications The communications with Ethernet-based standard protocols on a Vnet/IP network.
Optical Fiber cable A cable used for optical communication. It is required for extending transmission
cables and cables between buildings or noisy locations because it has low attenuation
and immunity from electromagnetic interference. The two types of optical fiber cable
are single-mode and multi-mode.
PCS Process Control System (PCS) is a generic name for systems that perform process
control such as CENTUM and its subsystems or PLC instrumented systems.
PLC Programmable Logic Controller (PLC) is a generic name for controllers that perform
sequence control.
PRM A station on which Plant Resource Manager (PRM) is installed.
ProSafe-RS A generic name for Safety Instrumented System ProSafe-RS R3, ProSafe-RS R2, and
ProSafe-RS R1.
ProSafe-RS system A system that consists of ProSafe-RS components.
SCS A Safety Control Station (SCS) is a safety controller of ProSafe-RS that performs logic
functions such as interlock, emergency shutdown, and fire and gas protection.
SENG A station of ProSafe-RS that performs engineering functions such as application
configuration, downloading, application testing, and carrying out of maintenance
tasks on SCSs. You can install the SENG functions on a station that has HIS or ENG
functions.
SFP A Small Form-factor Pluggable (SFP) is an MSA-compliant detachable optical
transceiver for network communication devices.
SIOS A System Integration OPC Station (SIOS) integrates third party process control
systems (PCSs) with the CENTUM system.
SNTP server A station that provides time in response to client requests by using the Simple Network
Time Protocol (SNTP), which is a standard protocol for synchronizing time on the
network.
UGS A Unified Gateway Station (UGS) is a Vnet/IP dedicated station that integrates
subsystem controllers such as STARDOM controllers (FCN/FCJ) or third party PLCs
with the CENTUM VP system.
UTP cable The most commonly used Unshielded Twisted Pair (UTP) cable. 100BASE-T uses
Enhanced Category 5 (CAT5e) UTP cables or higher. UTP cables usually use RJ45
plugs as connectors.
V net A process automation control network that uses the token passing method. It has a
transmission rate of 10 Mbps.
V net router A device that connects a Vnet/IP domain to a V net or VL net domain. It is used to relay
control communications.
VL net A control network for CENTUM CS 1000.
Vnet/IP A process automation control network based on gigabit Ethernet that complies with the
international standard (IEC 61784-2 Ed.2.0).
Vnet/IP domain A region in which devices are connected without using L3SW or V net router in a Vnet/
IP network.
Vnet/IP protocol A control communication protocol on Vnet/IP that conforms to IEEE 802.3 and UDP/IP.
Vnet/IP stations A generic name for devices such as FCS and SCS for Vnet/IP, V net router, and
stations in which a Vnet/IP interface card is installed.
WAC router A device used for connecting two Vnet/IP domains via wide area network (WAN)
through a public network or a dedicated network.
Mar. 15, 2019-00