Coyote (BL2500) User's Manual

1. Introduction

The Coyote single-board computer gives OEM designers extremely low-cost embedded control for high-volume applications. Two standard models--one with Ethernet, one without--feature the Rabbit^® 3000 microprocessor running at 29.4 MHz, with standard 256K flash and 128K SRAM. These compact boards are rich with the I/O (including one A/D input and two D/A outputs) designers need for embedded control and monitoring applications, and the Coyote's compact board size of 3.95" × 3.95" (100 × 100 mm) is easily mountable in standard 100 mm DIN rail trays.

Customized BL2500 models can be manufactured in volume in OEM versions to user-specified configurations. Pin-compatible RabbitCore modules allow multiple configurations of the Coyote with Ethernet and memory options.

1.1 Features

• Rabbit 3000^® microprocessor operating at 29.4 MHz (option for 44.2 MHz with 10/100Base-T Ethernet interface)

• 128K SRAM and 256K flash memory standard, optional 512K SRAM/512K flash

• 24 digital I/O: 9 protected and filtered digital inputs, 7 high-speed protected but unfiltered digital inputs, and 8 digital outputs sinking up to 200 mA at up to 36 V DC

• one 8-bit analog input channel

• two 9-bit PWM analog output channels

• six serial ports, including RabbitNet™ expansion ports

• one 10/100-compatible RJ-45 Ethernet port with standard 10Base-T interface (optional 10/100Base-T interface)

• 4 user-programmable LEDs.

• battery-backed real-time clock.

• watchdog supervisor.

• onboard backup battery for real-time clock and SRAM

Two BL2500 models are available. Their standard features are summarized in Table 1.

Table 1. BL2500 Models

Feature	BL2500	BL2510
Microprocessor	Rabbit 3000® running at 29.4 MHz
Flash Memory	256K1
Static RAM	128K*
Ethernet Connections	Yes	No
RabbitCore Module Used	RCM3010	RCM3110
A/D Converter Input	Yes	Yes

1 512K options available

The BL2500 consists of a main board with a RabbitCore module. Refer to the RabbitCore module manuals, available on Rabbit's Web site, for more information on the RabbitCore modules, including their schematics.

Appendix A provides detailed specifications.

Visit our Web site for up-to-date information about additional add-ons and features as they become available. The Web site also has the latest revision of this user's manual.

1.1.1 OEM Versions

The BL2500 and BL2510 models are also available in OEM versions as the OEM2500 and the OEM2510 (minimum quantity 500) where certain features have been removed or eliminated:

• fewer digital inputs--only 16 digital I/O, with 8 protected and filtered digital inputs and 8 digital outputs sinking up to 200 mA at up to 36 V DC (no header J12)

• no backup battery

• no RabbitNet™ hardware--no RS-422/multiplexer chips, no RabbitNet RJ-45 jacks, no RabbitNet™ power connectors (headers J7 and J8)

1.2 Development and Evaluation Tools

1.2.1 Development Kit

A Development Kit contains the hardware essentials you will need to use your BL2500/OEM2500. The items in the Development Kit and their use are as follows.

• BL2500 single-board computer.

• Getting Started instructions.

• Dynamic C CD-ROM, with complete product documentation on disk.

• Programming cable, used to connect your PC serial port to the BL2500.

• 12 V AC adapter, used to power the BL2500. An AC adapter is supplied with development kits sold in the North American market. If you are using your own power supply, it must provide 8 to 40 V DC.

• Demonstration Board with pushbutton switches and LEDs. The Demonstration Board can be hooked up to the BL2500 to demonstrate the I/O.

• Parts to build your own wire assemblies: wire, twenty-five 0.1" crimp terminals; ten 0.156" crimp terminals; 1 × 2, 1 × 4, and 1 × 10 friction-lock connectors.

• Nylon machine screws to serve as legs for the BL2500 board during development.

• Rabbit 3000 Processor Easy Reference poster.

• Registration card.

Figure 1. BL2500/OEM2500 Development Kit

1.2.2 Software

The Coyote is programmed using version 7.33 or later of Rabbit's Dynamic C. A compatible version is included on the Development Kit CD-ROM. Web-based technical support is included at no extra charge. Dynamic C v. 9.60 includes the popular µC/OS-II real-time operating system, point-to-point protocol (PPP), FAT file system, RabbitWeb, and other select libraries that were previously sold as individual Dynamic C modules.

Rabbit also offers for purchase the Rabbit Embedded Security Pack featuring the Secure Sockets Layer (SSL) and a specific Advanced Encryption Standard (AES) library. In addition to the Web-based technical support included at no extra charge, a one-year telephone-based technical support subscription is also available for purchase. Visit our Web site at www.rabbit.com for further information and complete documentation, or contact your Rabbit sales representative or authorized distributor.

1.2.3 Connectivity Tools

Rabbit also has available additional tools and parts to allow you to make your own wiring assemblies in quantity to interface with the friction-lock connectors on the Coyote.

• Connectivity Kit (Part No. 101-0581)--Six 1 × 10 friction-lock connectors (0.1" pitch) with sixty 0.1" crimp terminals; and two 1 × 4 friction-lock connectors (0.156" pitch) and two 1 × 2 friction-lock connectors (0.156" pitch) with fifteen 0.156" crimp terminals. Each kit contains sufficient parts to interface with one Coyote board (some parts may be left over).

• Crimp tool (Part No. 998-0013) to secure wire in crimp terminals.

Table 3 in Chapter 3 provides information on specific friction-lock connectors and crimp terminals to be used with the various headers on the BL2500. Contact your authorized Rabbit distributor or your sales representative for more information.

1.2.4 DIN Rail Mounting

The Coyote may be mounted in 100 mm DIN rail trays as shown in Figure 2.

Figure 2. Mounting Coyote in DIN Rail Trays

DIN rail trays are typically mounted on DIN rails with "feet." Table 2 lists Phoenix Contact part numbers for the DIN rail trays, rails, and feet. The tray side elements are used to keep the Coyote in place once it is inserted in a DIN rail tray, and the feet are used to mount the plastic tray on a DIN rail.

Table 2. Phoenix Contact DIN Rail Mounting Components

DIN Rail Mounting Component	Phoenix Contact Part Description	Phoenix Contact Part Number
Trays	UM 100-PROFIL cm1	19 59 87 4
Tray Side Elements	UM 108-SE	29 59 47 6
Foot Elements	UM 108-FE	29 59 46 3

1 Length of DIN rail tray in cm

NOTE	Other major suppliers besides Phoenix Contact also offer DIN rail mounting hardware. Note that the width of the plastic tray should be 100 mm (3.95") since that is the width of the Coyote. 108 mm plastic trays may be used with spacers.

1.3 RabbitNet Peripheral Cards

RabbitNet™ is an SPI serial protocol that uses a robust RS-422 differential signalling interface (twisted-pair differential signaling) to run at a fast 1 Megabit per second serial rate. The Coyote has two RabbitNet ports, each of which can support one peripheral card. Distances between a master processor unit and peripheral cards can be up to 10 m or 33 ft.

The following low-cost peripheral cards are currently available.

• Digital I/O

• A/D converter

• D/A converter

• Relay card

• Display/Keypad interface

Appendix D provides additional information on RabbitNet peripheral cards and the RabbitNet protocol. Visit our Web site for up-to-date information about additional add-ons and features as they become available.

1.4 CE Compliance

Equipment is generally divided into two classes.

CLASS A	CLASS B
Digital equipment meant for light industrial use	Digital equipment meant for home use
Less restrictive emissions requirement: less than 40 dB µV/m at 10 m (40 dB relative to 1 µV/m) or 300 µV/m	More restrictive emissions requirement: 30 dB µV/m at 10 m or 100 µV/m

These limits apply over the range of 30-230 MHz. The limits are 7 dB higher for frequencies above 230 MHz. Although the test range goes to 1 GHz, the emissions from Rabbit-based systems at frequencies above 300 MHz are generally well below background noise levels.

The BL2500 single-board computer has been tested and was found to be in conformity with the following applicable immunity and emission standards. The BL2510 and OEM single-board computers are also CE qualified as they are sub-versions of the BL2500 single-board computer. Boards that are CE-compliant have the CE mark.

NOTE	Earlier versions of the BL2500 that do not have the CE mark are not CE-compliant.

Immunity

The BL2500 series of single-board computers meets the following EN55024/1998 immunity standards.

• EN61000-4-3 (Radiated Immunity)

• EN61000-4-4 (EFT)

• EN61000-4-6 (Conducted Immunity)

Additional shielding or filtering may be required for a heavy industrial environment.

Emissions

The BL2500 series of single-board computers meets the following emission standards.

• EN55022:1998 Class B

• FCC Part 15 Class B

Your results may vary, depending on your application, so additional shielding or filtering may be needed to maintain the Class B emission qualification.

1.4.1 Design Guidelines

Note the following requirements for incorporating the BL2500 series of single-board computers into your application to comply with CE requirements.

General

• The power supply provided with the Tool Kit is for development purposes only. It is the customer's responsibility to provide a CE-compliant power supply for the end-product application.

• When connecting the BL2500 single-board computer to outdoor cables, the customer is responsible for providing CE-approved surge/lightning protection.

• Rabbit recommends placing digital I/O or analog cables that are 3 m or longer in a metal conduit to assist in maintaining CE compliance and to conform to good cable design practices.

• When installing or servicing the BL2500, it is the responsibility of the end-user to use proper ESD precautions to prevent ESD damage to the BL2500.

Safety

• All inputs and outputs to and from the BL2500 series of single-board computers must not be connected to voltages exceeding SELV levels (42.4 V AC peak, or 60 V DC).

• The lithium backup battery circuit on the BL2500 single-board computer has been designed to protect the battery from hazardous conditions such as reverse charging and excessive current flows. Do not disable the safety features of the design.

1.4.2 Interfacing the BL2500 to Other Devices

Since the BL2500 series of single-board computers is designed to be connected to other devices, good EMC practices should be followed to ensure compliance. CE compliance is ultimately the responsibility of the integrator. Additional information, tips, and technical assistance are available from your authorized Rabbit distributor, and are also available on our Web site at www.rabbit.com.