Echelon i.LON SmartServer User's Guide download pdf (Page 16)

2 Introduction

Overview of Freely Programmable Modules

Freely Programmable Modules (FPMs) are custom C/C++ applications and drivers that you can use to

customize the functionality of the SmartServer. You can use FPM applications to supplement the

built-in applications on the SmartServer and provide solutions for a number of applications, including

energy optimization, data analysis, lighting control, and room control. You can use FPM drivers as

gateways to legacy systems or nonnative networks such as BACnet and CAN (requires an external

interface, sold separately)

. You can then use your FPM drivers to send data from the SmartServer’s

RS-232 or RS-485 ports to a built-in application on the SmartServer (for example, a Scheduler or a

Data Logger) or a custom SmartServer Web page.

An FPM can perform the following tasks:

• Create data points on the SmartServer.

• Execute code upon data point updates.

• Read and write data to data points.

• Control timers and execute code upon their expiration.

• Read and write data to the RS-232 serial port on the SmartServer.

• Read and write data to the RS-485 serial port on the SmartServer.

FPM Types

You can create two types of FPMs: FPM applications and FPM drivers. An FPM application reads and

writes values to the data points declared in it, executes code upon data point updates, reads data point

properties, and controls timers and executes code upon their expiration. A simple example of an FPM

application would be one that reads two data points and adds their values together.

An FPM driver creates data points on the SmartServer (not in the LNS database) and provides values

for them by reading and writing to the RS-232 and RS-485 ports on the SmartServer. You can use an

FPM driver to create gateways for nonnative devices. An FPM driver can then be used to supply data

from the RS-232 or RS-485 ports to a built-in application or custom Web page on the SmartServer.

Creating and Deploying FPMs

You can create FPMs using the i.LON SmartServer 2.0 Programming Tool, which includes a pre-

configured C/C++ Eclipse environment and all the tools needed to write, compile, and upload, your

FPMs. After you create your FPMs, you can deploy them on your SmartServer.

Before you can begin writing your FPMs, you need to use the NodeBuilder Resource Editor to create a

user-defined functional profile template (UFPT), which defines the set of network variables and

configuration properties to which your FPM will read and write.

You can write an unlimited number of FPMs using the demo or full versions of the i.LON SmartServer

2.0 Programming Tool. To compile your FPMs and deploy them on your SmartServer, you must use

the full version of the i.LON SmartServer 2.0 Programming Tool, which is included on the i.LON

SmartServer 2.0 Programming Tools DVD. To order the i.LON SmartServer 2.0 Programming Tools

DVD (Echelon part number 72111-409), contact your Echelon sales representative.

To begin running your FPMs on your SmartServer, an FPM programming license must be installed on

your SmartServer. To order an FPM programming license for your SmartServer, go to the i.LON

SmartServer 2.0 Web site at

www.echelon.com/products/cis/activate. If you plan on using licensed

Echelon first-party FPMs or licensed third-party FPMs on your SmartServer, you must also order a

separate FPM application license from Echelon or the third-party FPM vendor.

To deploy an FPM application on the SmartServer, you upload the FPM executable module to the

SmartServer, and then add an internal device to the SmartServer. The internal device must use a static

interface if you are integrating your FPM applications with another LNS application such as the

LonMaker tool. If you are running your network with the SmartServer operating as a standalone

network manager, the internal device can use a static or dynamic interface.

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Echelon i.LON SmartServer User's Guide Page 16

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