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Availability: Obsolete
OBSOLETE SNAP 32-channel ARCNET Analog/Digital Brain

Production Specification

The B3000-HA is obsolete and no longer available. There is no direct replacement.

Depending on your application, you may be able to use a B3000-B brain with RS-485 instead of twisted-pair Arcnet, or you may want to migrate to the SNAP PAC System.

Please contact Opto 22 Pre-Sales engineers with details about your specific application so they can help recommend parts.

NOTE: If you already have a B3000-HA and need additional I/O, note that not all SNAP I/O modules are compatible with this brain.

See Legacy and Current Product Comparison and Compatibility Charts for compatibility information.

Power Requirements

5.0 - 5.2 VDC at 1.0A max.

Operating Temperature

0 to 70 °C, 5–95% humidity, non-condensing


16-bit Intel 80C196 I/O processor

Communications Interface

Node 0 and Node 1; twisted-pair ARCNET at 2.5 megabits per
second. Either port can be used, or both ports can be used for
redundant processor-to-I/O communication.

Data Rates

2.5 megabits per second; baud jumpers, although present, have
no effect.

Range (Multidrop Mode):

Up to 1,000 feet with up to 17 nodes. Repeaters and conversion
from Coax cable are commercially available.

Counter/Frequency Measurement

Maximum Rate: 20 kHz
Minimum Pulse Width: 10 µsec

Output Pulse

Maximum Rate: 500 Hz
Minimum Pulse Width: 1 msec

PID Update Rate

100 msec (for 1 to 8 PID loops)

LED Indicators

RUN (Power On), XMT (Activity), PGM (Program), and COM ports

Options: Jumper Selectable

Address, Node 0 Termination, Node 1 Termination


CAT-3 or CAT-5 UTP


SNAP 32-Channel ARCNET Brain Board Data Sheet

The B3000-HA is obsolete and no longer available. There is no direct replacement.

The SNAP-B3000-HA processor is used to remotely control a mix of both analog and digital I/O modules using Opto 22's SNAP B-Series I/O mounting racks.

Technical Note: Using Offset and Gain

This technical note shows you how to set offset and gain for Opto 22 analog input modules.

CE Declaration: Low Voltage

This document is the Manufacturer's Declaration for the listed products as mentioned in the attachment - to which this confirmation refers - that they are in accordance with the mentioned European, international and/or national standards and regulations.

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