Echelon IzoT Commissioning Tool - Manual (Page 372)

Group Addressing
A logical addressing mode in the ISO/IEC 14908-1 Control Network Protocol that allows a message to
be sent simultaneously to a pre-configured group of devices. Each group has an 8-bit group ID. Each
domain can have up to 256 groups defined.
Host
A device implementing layer 7 of the ISO/IEC 14908-1 Control Network Protocol. A host may be
based on a Smart Transceiver or Neuron Chip, in which case it is called a Neuron hosted device. A
host may be based on another processor, in which case it is called a host-based device. A host-based
device uses a Smart Transceiver or Neuron Chip as a network interface to talk to the L
ON W ORKS
network.
Host Processor
The application processor for a host-based device. The host processor is typically a microcontroller,
microprocessor, or computer.
Host-Based Device
A device in which the device application program runs on a processor other than a Smart Transceiver
or Neuron Chip.
Hot Backup
A shadow copy of the OpenLNS network database made while one or more OpenLNS applications are
accessing it.
Hub
The center of a connection, which is specified by the device handle and network variable index (or
message tag index). Each connection is defined in terms of a hub and a set of targets. The hub must
be either the only input or the only output network variable (or message tag) in the connection. For
example, if the hub is an output network variable, all the other members in the connection must be
input network variables.
Human-Machine Interface (HMI)
A network tool that provides services for human monitoring and supervisory control of systems. The
HMI usually runs on a workstation or desktop/portable computer.
IP
Acronym for Internet protocol, the basic programming foundation that carries computer messages
around the globe on the Internet. Sometimes called TCP/IP (Transmission Control Protocol/Internet
Protocol), even though TCP is a protocol that runs on top if IP, and IP supports other protocols besides
TCP.
IP-852 Channel
An IP-852 channel carries ISO/IEC 14908-1 packets enveloped in ISO/IEC 14908-4 packets. An
IP-852 channel is a L
ON W ORKS channel that uses a shared IP network to connect IP-852 devices and is
defined by a group of IP addresses. These IP addresses form virtual wires that connect IP-852 devices
so they can communicate with each other. IP-852 devices may include the OpenLNS Server
computers, IzoT Commissioning Tool computers, IP-852 routers, and native IP-852 devices. An
IP-852 channel enables a remote full client to connect directly to a L
ON W ORKS network and perform
monitoring and control tasks.
IP-852 Configuration Server
The IP-852 Configuration Server maintains an IP routing table database required for IP-852 channels.
It is used to create, manage, and configure IP-852 channels and IP-852 devices.
356 Appendix B – Glossary