S4 Open Appliances V5

S4 Open Appliances Enhancing and Extending Metasys®

Steven E. Jones The S4 Group Inc.

© 2011 The S4 Group, Inc.1

© 2011 The S4 Group, Inc.

Typical Metasys Installation

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Ethernet Network

M3 / M5 Workstation

N30 / NCMSupervisory Controller

VMA Device(N2B

Protocol)

DX-9100(System 91 Protocol)

TEC2145-2 (N2 Open Protocol)

MS-MIG3120(Metasys

Integrator)

TCS Basys (VND Device)

N2 Protocol(RS-485)


S4 Open appliances are designed to facilitate Integration of cost effective, building automation solutions.

Extends the reach of Metasys® to enterprise solutions Automatically discover and configure N2 devices Merge multiple N2 buses into a virtual N2 bus Automatically translate N2 addresses Extend N2 interfaces over Ethernet TCP/IP connections Enhance Metasys® with Open interfaces including OPC, BACnet, and

others Control all S4 Open appliances through one S4 Open: Management

Console. All N2 sub-protocols are fully supported. (N2B, System 91, N2 Open,

Vendor Devices, Metasys Integrator)◦ ALL N2 devices are supported

Works with any generation of Metasys that supports N2◦ See http://www.thes4group.com/Downloads/PDF/metasys_eng.pdf

S4 Open Appliance Concepts

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http://www.thes4group.com/Downloads/PDF/metasys_eng.pdf


Salvage Legacy N2 Field Devices◦ Benefit: Leverage existing infrastructure◦ Replace HMI with BACnet or OPC based solution◦ Merge legacy busses if desired◦ Manage new and existing equipment from one interface

Phase Out Legacy N2 Field Devices◦ Benefit: Cost of upgrading can be distributed over any

length of time◦ Replace HMI with BACnet or OPC based solution◦ Gradually replace Legacy equipment with new solution◦ Transitioning to new equipment is seamless◦ Unplug N2 Router when upgrade is complete

What’s Your Strategy – N2 Bus?

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The legacy supervisory controller can be removed completely if the new head end can perform the following:◦ Occupied / Unoccupied schedules. The N2 field devices

normally do not include a time clock so they completely rely on the head end for scheduling activities.

◦ Trending and logging activities.◦ Global Variable support. For example, an outside air

temperature sensor on one N2 device may be shared with other N2 devices on the same N2 bus or with N2 devices on other Metasys networks.

◦ Custom logic coded into the NCM or other supervisory controllers with GPL, JC Basic, or other languages.

If the new head end meets the above criteria and the legacy supervisory controller is removed the S4 Open appliance will act as bus master.

What’s Your Strategy – Supervisory?

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Choose The Right S4 Appliance

MODEL N2DEVICES

UPSTREAMN2 PORT

DOWNSTREAMN2 PORTS

BACnet-N2 Router-16 16 No 1




BACnet-N2 Router-256 253 (Note 2) Yes (Note 1) 1 (Expandable)

OPC-N2 Router-16 16 No 1




OPC-N2 Router-256 253 (Note 2) Yes (Note 1) 1 (Expandable)

Note 1: Utilizing the Upstream N2 port allows you keep legacy Metasys supervisory controllers® in place.Note 2: Johnson Controls reserves N2 addresses 0, 254, and 255.

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Validate that the customer’s N2 Bus is within specifications with a digital volt meter or a…

ComBus Quick Tester◦ Quickly tests the entire N2 system◦ Checks bus voltages indicating Pass/Fail◦ Counts all devices on the bus and identifies each

by hardware type and N2 address◦ Works as a Master Controller to check the entire

system or segments of the network

Schedule and complete any maintenance work before starting integration

Integration Site Preparation

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Using JCI’s Metasys ® Utilities Identify◦ What applications are loaded on existing controllers◦ Custom logic in the supervisory controller that needs to be

replicated◦ Which points are relevant to bring in to the new head-end◦ Which controllers are obsolete and require replacement

Metasys ® Utilities are available through distribution◦ M-Tools package

HVAC Pro – N2 Open and VMA devices GX9100 – DX-9100

If you do not have Metasys expertise ◦ Find an independent consultant◦ DO NOT Guess!

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Understand the Metasys ® System


Integration Step 1

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Each N2 Device Type Template starts out with a header section

Next is the Point Map section Used by Auto Configure Wizard

◦ Application Device Type◦ Hardware Device Type◦ Probe For Points

Can be manually assigned Field customizable Stored in On-board Catalog Off-line library available Unique Device Concerns

◦ VND◦ MIG◦ Point Multiplexer

Advanced Concept: Device Type Templates

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Install S4 Open Management Console◦ Free management utility provided by S4 that

works as a Microsoft Management Console snap-in

Load Device Type Templates

Run Auto Configure Wizard◦ You will need to manually assign device type

templates to vendor devices after completion

Integration Step 2

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Integration Step 2:Run Auto Configure

Note: N2 devices will appear off-line to the supervisory controller during the auto configuration process.

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With the management console you can…◦ Test read and write to

any point on any device◦ Review detailed

information on any device

◦ Rename, create, and delete points or devices, real or virtual

◦ Manage all S4 Open appliances detected on the Ethernet network

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S4 Open: Management Console


Integration Step 3

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Ethernet Network

M3 / M5 Workstation


VMA Device(N2B

Protocol)



MS-MIG3120(Metasys

Integrator)


N2 Protocol(RS-485)

S4 Open Appliance

Install the replacement OPC or BACnet HMI / Head End

Replacement Workstation


Develop Graphics for HMI If the legacy head end is being removed:

◦ Define Schedules◦ Define Trends◦ Replace any Global Variables◦ Replace any supervisory controller logic

Be aware: the legacy head end and the replacement workstation may both try to control the same points!◦ Last one in wins

Integration Step 4

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Integration Step 5 (Optional)

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Ethernet Network

M3 / M5 Workstation


VMA Device(N2B

Protocol)



MS-MIG3120(Metasys

Integrator)


N2 Protocol(RS-485)

S4 Open Appliance


Ethernet Network

VMA Device(N2B

Protocol)



MS-MIG3120(Metasys

Integrator)


N2 Protocol(RS-485)

S4 Open Appliance


Remove Legacy Metasys Supervisory Controller and

Workstation(Optional)


BACnet IP BACnet-N2 Router Device ID and Network

◦ This can be set and easily modified via the management console

◦ The entire Metasys installation is published as one BACnet device

Standard BACnet Data Objects are Supported Instance Numbers are based on the published

N2 address◦ Six digit Instance Numbers◦ Leftmost 3 Digits reflect the source N2 address◦ Rightmost 3 digits make the object unique

Advanced Concept: BACnet Addressing

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The S4 Open: Management Console transparently creates a local OPC Proxy Server and establishes a tunnel to the OPC-N2 Router

The OPC Proxy Server, and associated tunnel, are established on the local machine during the Auto Detection process, or manual linking process, for S4 Open appliances.

From the standpoint of an OPC client application, it is talking to a local OPC server so there are no DCOM configuration or security issues

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Advanced Concept: OPC Server Interface


Advanced Concept: Merge N2 Buses

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Ethernet Network

VMA Device(N2B

Protocol)



MS-MIG3120(Metasys

Integrator)


N2 Protocol(RS-485)

S4 Open Appliance

ReplacementWorkstation

VMA Device(N2B

Protocol)



MS-MIG3120(Metasys

Integrator)


M3 / M5Workstation

N30 / NCMSupervisoryController

Optonal


No two devices can have the same address so…◦ The N2 Router translates N2 addresses to resolve duplicate addresses◦ Device on the lower bus keeps original address◦ No need to manually change N2 device switches

Advanced Concept: N2 Address Translation

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The N2 bus is limited to 9600 baud half-duplex◦ The S4 Open appliance protects the N2 bus from becoming

overwhelmed with requests from high speed Ethernet interfaces◦ The S4 Open appliance has built in performance and error monitoring

capabilities Installation problems

◦ Validate the N2 bus◦ Repair any electrical or installation problems

Polling a large number of points at high frequency◦ EMF interference and malfunctioning N2 devices, along with other

factors, contribute to time-out, data loss, and associated errors These issues compound exponentially as the physical

downstream Bus grows in size and age JCI Engineering Guidelines

◦ N30 – 50 N2 devices◦ NCM – 100 N2 devices

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Advanced Concept: N2 Bus Performance Considerations


The N2 bus is limited to 9600 baud half-duplex◦ This can’t be changed!

Split a single large N2 Bus into multiple segments◦ Each segment is brought into a single N2 Router on separate

downstream ports◦ The new configuration will continue to look and behave like a

single N2 Bus to any upstream supervisory controllers◦ This is all achieved without the need to implement any new logic

in the supervisory controller or extensive rewiring. Split a single large N2 Bus into multiple segments

◦ Each segment is served with its own S4 Open Appliance◦ From the point of view of the supervisory equipment there are

now 2 separate N2 buses◦ At the field level, communications are running much more

smoothly and efficiently.

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Advanced Concept: Optimizing N2 Bus Performance


Currently, all points on all devices are discovered on the downstream legacy network(s) and published as a list of points on one BACnet device

A future enhancement will enable the router to discover N2 devices and publish them as individual BACnet devices – our OPC router already has this functionality

BBMD Support

Advanced Concept: Future BACnet Addressing Mode

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Advanced Concept: N2 Extended Over Ethernet

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Ethernet Network

VMA Device(N2B

Protocol)



MS-MIG3120(Metasys

Integrator)


N2 Protocol(RS-485)

S4 Open Appliance


ADAMSerial Server

N2 P

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N2 P

rotocol(E

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BA

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PC

(ET

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Downstream N2 Connection Via Advantech ADAM Ethernet Serial

Server

BA

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Application ScenariosExample Integrations Using S4 Open

Appliances

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Small Office Building, Dead N30 Problem

◦ A potential customer has a small, one story, office building with 12 units.

◦ The building has a total of 10 N2 devices

◦ The N30 supervisory controller is no longer functioning, all N2 devices are in default operation mode.

Solution◦ Replace N30 with BACnet-

N2 Router 16◦ Install new BACnet based

HMI


Problem◦ A school district needs to keep

track of energy usage across a diverse range of buildings

◦ A sizable percentage of the buildings are Metasys based

◦ The district already uses an OPC-based trending solution for central reporting for some of the buildings

Solution◦ Install an appropriately sized

OPC-N2 Router in each building◦ Connect each OPC-N2 Router to

the central office via existing IT infrastructure

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Multi-building Energy Reporting


Problem◦ A potential customer wants to migrate from

Metasys to a purely BACnet-based system◦ Budget does not allow for a complete

upgrade to take place all at once Solution

◦ Install one appropriately BACnet-N2 Router for each legacy supervisory controller

◦ Install a new BACnet-based HMI, all data from the legacy Metasys installation is immediately available to the new system

◦ Leave the legacy controller in place and allow it to continue communicating via the upstream interface on the BACnet-N2 Router

◦ Run a parallel BACnet field bus and replace N2 controllers with BACnet controllers as budget allows or as need arises

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Transition Large Office Building to BACnet


Solutions using a Lego®-like architecture with plug-in modules Product family includes N2 Switch, OPC-N2 Router, BACnet-

N2 Router

S4 Open Appliance Architecture

Upstream Interfaces

Ethernet RS-232 RS-485 BACnet OPC Metasys® N2 SNMP XML/ oBIX …

Auto Configure Scheduler J IT Compilers Administration

Virtual Devices Core Services Universal

Points Routing Address Management Object Management

Metasys®

N2 OPC BACnet MODbus DALI Siemens P1 …

Ethernet RS-232 RS-485 Ethernet Serial Server

Downstream Interfaces

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Downstream Protocols◦ Siemens P1◦ Barber-Colman◦ MODbus◦ EnOcean◦ …

Upstream Protocols◦ SNMP◦ XML / oBIX◦ …

Built in logic to replace supervisory controllers◦ Data Distribution Daemon

Support for more serial server brands Wherever the market takes us

S4 Open Appliance Future Development

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Questions?

Live Demo Up Next…Then, we’ll continue

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S4 Open Appliances V5

Documents

Transcript of S4 Open Appliances V5