System Programming and Commissioning

The installing electrician shall carry out commissioning of fittings onto the Network Communication System. Installation of the system shall be a four-stage process:

Stage 1 Design, specification and tendering.

Stage 2 Installation, wiring and data cabling testing

Stage 3 Setup server and software, program fittings onto the network, creating database, practical completion.

Stage 4 End user operation training.

At the time of commissioning, all routers and repeaters are to be clearly labeled with the network address assigned by the server and all emergency fittings are to be clearly labeled with the Channel Sequence Number.

All descriptive information required by the front-end software package is to be entered by the commissioning contractor and saved in the system database for the system server, routers and emergency luminaires.

Detailed "As Installed" drawings must be provided upon completion of the system installation providing the following information:

Location of the system server, routers and emergency luminaires.

Data cable installation routes and exact graphical detail of the data cable installation between the

routers and the server and the emergency luminaires and the routers.

All routers and emergency luminaires must be labeled with the network address assigned by the system sever and must match the label attached to the router or emergency luminaire.

8.

Glossary of Terms

Each node in a Nexus system has an address. The address consists of a number of LONWorks elements: Domain, Subnet, Node, Group and Neuron_ID. In addition it has two Nexus specific elements: Channel Sequence Number and SPU_ID.

AUSTRALIAN STANDARD / NEW ZEALAND STANDARD 2293 (AS/NZS 2293)

The STANDARD that sets out the requirements for the design, installation and operation of emergency evacuation lighting systems for buildings. Divided into 3 parts: - Part 1, System design, installation and operation; - Part 2, Inspection and maintenance; - Part 3, Emergency luminaires and exit signs.

AUSTRALIAN STANDARD 3000 (AS 3000)

Electrical installations - Buildings, structures and premises (SAA Wiring Rules). The STANDARD that defines the method of installation for the wiring of medium to high voltage electrical installations.

CHANNEL

A collection of Channel Segments connected end to end by Repeaters. The channel is connected at one point by a Router to the trunk channel. In Nexus a channel corresponds to a LONWorks subnet because it is served entirely by one Router. The maximum number of nodes in a channel is determined by the LONWorks subnet limit of 127 nodes. This includes the router and repeater nodes on that channel.

CHANNEL SEGMENT

A section of data communication-cable used as the physical transport medium for Packets of data. Limited to no longer than 1000 m in length, terminated at each end with a Terminator. Stanilite recommends that no more than 50 SPUs be connected to each segment to avoid signal attenuation due to excessive loading. Channel segments can be connected by Repeaters to form Channels.

CHANNEL SEQUENCE NUMBER

The Channel Sequence Number is used to

register each fitting as it is commissioned. It consists of two parts: the Channel is the channel to which the node is connected; the Sequence is the order of that fitting along the channel. For example, the first fitting on Channel 2 will have a Channel Sequence Number of 2-1, the next would be 2-2 and so on. Fittings can be inserted in a pre- existing sequence if required. For example, 3 fittings could be inserted between the two

mentioned: 2-2.1, 2-2.2, 2-2.3. The purpose of the Channel Sequence Number is to intrinsically identify the relative data cable location of a node. DEVICE CREDIT

A device credit is a royalty payment made by Stanilite to Echelon for each node commissioned using the LNS network operating system. Device credit royalties are not payable by the end user of a Nexus system, but they are allocated by Stanilite to Nexus installations and are automatically accounted for by the Nexus system. For instance, a site with say 1500 nodes will have at least 1500 device credits allocated to it. If nodes are added to the site, Stanilite will provide sufficient additional credits.

DOMAIN

The first level of LONWorks addressing. The domain identifier can be 0, 1, 3, or 6 bytes long. The default Nexus domain is C8(hex). A single node may be a member of up to 2 domains. ECHELON

The name of the corporation that developed the LONWorks communications and control system, the LONTalk protocol and Neuron

microcontrollers. Etherlon Router/Repeater

Contains an Ethernet transceiver, a TPXF78 transceiver and a router module. Can be

configured as a router or repeater from Ethernet to TPXF78. Manufactured by CTI Products Inc in the USA as a standard LONWorks product. FTR Router / Repeater

Contains a fibre optic transceiver (FTR), a TPXF78 transceiver and a router module. Can be configured as a router or repeater from fibre to TPXF78. Manufactured by CBL Systems

Corporation in the USA as a standard LONWorks product.

64 Nexus LX GROUP

A LONTalk addressing construct. Each node in a Lonworks network can belong to up to 15 groups. There can be up to 256 different groups in a LONWorks domain. Groups are used to make a collection of nodes that can be addressed with a single message – they are used in Nexus to group SPUs for emergency lighting discharge tests. Group addressing is independent of subnet/node addressing.

kbps

Kilobits per second. The term used to describe the speed of data transfer in digital form from one location to another. A standard Nexus node communicates at 78kbps.

LNS

LonWorks Network Services. LNS is a network operating system provided by Echelon that runs in a 32-bit Windows environment. It provides network management tools for use by top level user interface programs such as Nexus. LON

Local Operating Network. The name used by ECHELON for their Neuron based distributed communications and control network.

LONTalk

The ANSI/EIA 709.1 Control Networking Standard communications protocol created by ECHELON. This protocol is a set of rules that determines how data is transferred over a Local Operating Network.

MAINTENANCE GROUP

A collection of all the SPUs with either status or test faults.

NEURON

The name given to the microcontroller developed by ECHELON, manufactured by CYPRESS and TOSHIBA, that forms the basic component in every LON node.

Neuron_ID

A 48 bit identifier permanently and uniquely assigned to each Neuron microcontroller at the time of manufacture.

Nexus Server

The PC used to interface between the Nexus system and its user. This PC runs the Nexus program and is connected either internally or externally to a LONWorks interface device which provides the connection to the LONWorks network.

The intelligent Network device that connects to the Network cable through a transceiver and functions as a source or destination of PACKETS of data. Every NODE contains a NEURON chip. This along with other software and firmware coded addresses, allows each NODE to be contacted over the Network, individually or in groups.

It is also the third level of LONTalk addressing. There may be up to 127 nodes in a subnet. NUN

The Network Utility Node is a device that is used in conjunction with the NUP to test the data communications of a Nexus network. It is a node that connects to the trunk and is usually located near the Nexus Server.

NUP

The Network Utility Program is used in conjunction with the NUN to test the data communications of a Nexus network. It is a program that runs on the Nexus Server and provides the ability to discover nodes and then manipulate them as well as packet count them. PACKET

A defined quantity of data transmitted on the Network to LON specifications. Forms a complete message including source and destination

addresses with command instructions and data. All Network data is in PACKETS.

PACKET COUNT

A measure of the quality of communications between two nodes.

PCC10

A LONWorks interface device manufactured by Echelon. A Type II PC card that connects to the PCMCIA port of a notebook PC being used as a Nexus Server. It provides an external connection to the TPXF78 trunk.

PCLTA20

A LONWorks interface device manufactured by Echelon. It connects to the PCI bus inside the Nexus Server and externally to the TPXF78 trunk. REPEATER

Connects two segments of a Channel together to extend the length of a Channel or to increase the number of nodes connected to the Channel. Transfers all data Packets from one segment of a Channel to the other and boosts the signal strength in the process. Counts as 1 NODE on each segment of the Channel.

ROUTER

The device that connects a branch Channel to the main Trunk. Selectively transfers data PACKETS from one Channel to the other (and boosts the signal strength in the process), when the Network destination address of the PACKET lies on the other side of the Router. By the LONWorks definition, a subnet must lie completely on one side of a router. In Nexus every node on the far side of a router (ie the side away from the trunk) is in the same subnet and is in the same channel. SPU

Single Point Unit. The term for an emergency light fitting (unit) that stands alone (at a single point) and includes its own rechargeable battery and battery charger. When normal mains power to it fails, it automatically energises its emergency lamp until the power is restored or the battery discharges.

SPU ID

This is a purely sequential number applied to an SPU as it is commissioned. SPUs on a site are numbered from 1 onwards.

SUBNET

The second level of LONTalk addressing. There may be up to 255 subnets in a domain. The subnet corresponds to the Nexus channel although the number of Nexus channels is limited by the single level of routers imposed by Nexus.

TERMINATOR

A small device that must be attached to both ends of a Channel Segment. It consists of a passive network of components that forms a complex impedance equal to the characteristic impedance

of the standard Stanilite data cable. The function of the terminator is to absorb signal energy at the end of a data cable to prevent unwanted

reflections which would otherwise distort the signal.

TPXF78

Refers to the standard Stanilite data transceiver. It is a transformer isolated coupling filter designed to operate with differential Manchester encoded data running at 78 kbps. It connects to a level 4 twisted pair data cable with a characteristic impedance of 100 ohms.