Generic Core Module

Overview

The LonWorks Core Module (53011) provides a simple, cost-effective method of adding LonWorks technology to any control system. The module consists of a miniature circuit card containing a Neuron 3150 Chip, reprogrammable 32Kbyte flash memory, 32Kbyte RAM, 10MHz crystal oscillator, and connectors for power, application I/O or host interface, and a transceiver.

This LonWorks Core Module includes standard Neuron Chip firmware with extensions for automatic configuration of transceiver parameters, output of a packet transmitted signal, manual device recovery, and a Microprocessor Interface Program (MIP) that can be used to convert the module to a LonWorks network interface. 

The firmware comes preconfigured with many common LonWorks transceiver parameters. Five transceiver identification (ID) pins on this module select the appropriate transceiver type. 

The packet send output uses an additional output pin provided by the hardware to provide an indication of network activity. This output is asserted low for approximately 40ms when a packet is sent from the network processor to the MAC processor on the Neuron Chip. 

Logic on this module provide 2 additional bit outputs. One of these outputs is used as a packet send indicator by the firmware; the other can be used either as a general purpose bit output or as an uplink data interrupt request when using the MIP.

The manual device recovery feature provides a means to recover a device that has been loaded with a defective application that renders it inoperable. The annual device recovery features allows such a device to be recovered by activating the service input prior to activate the service input after releasing the reset input. After approximately 10 seconds, the device will become applicationless, allowing a network services tool to reload a new application.

The reprogrammable flash memory makes the WLM-10 core module ideal for controlling devices that may be upgraded or modified after installation, e.g., complex sensors, motor controllers, or user interface devices. 

The integral MIP firmware allows the module to be used as an applications processor or as a network interface for another host processor. Any host with memory-mapped I/P or an 8-bit parallel data bus with 3 control lines and an optional uplink interrupt may be used. The MIP allows the host to receive asynchronous updates from up to 4096 network variable connections, each consisting of an unlimited number of network variables; as with any node, there are no limitations on the number of network variables that can be written or polled. The optional uplink interrupt eliminates the need for polling by the host for incoming data and thereby reduces delays.

Specifications for the network driver are included in the Echelon's Microprocessor Interface Program (MIP) User's Guide. A sample host application and source code for a network driver for DOS (or the basis for a network driver for any host) is available on Echelon's LonLink BBS. 

Using this core module can save hundreds of hours of development time compared with designing custom modules, and minimizing time-consuming and expensive laboratory testing, component selection, and layout redesign work.

This core module is exchangeable with Echelon's LTM-10A module.

Specification

Configuration

• Hardware Memory Map:

• Connectors:

• Transceiver ID:

The 5-bit transceiver ID input XID(4..0), specifies the transceiver type and input clock speed as listed in the following table: 

Values Added

Special Offer

Unit Price: Euro 20.90

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