Overview

Impinj designed the Speedway^® Revolution GPIO Box for use with the Speedway^® Revolution reader to provide convenient access to the reader’s GPIO (General Purpose Input/Output) port. The GPIO Box interfaces with the reader via a supplied HD15 cable, and separates each input and output signal to easy-access screw terminals. Neighboring ground and power terminals accompany each signal terminal to easily connect three-wire devices. The GPIO Box also includes an on-board relay to interface with devices require high wattage or an open/short signal.

Features

· Easy-access screw terminals

· Power and ground terminals for each input and output

· Each output can provide 250mA at 24V with optional external universal power supply

· SPDT Relay output capable of 5A at 240VAC

· Ability to use reader-supplied 5V for low p ower digital applications, including the SPDT Relay

· Highly visible LED indicators for each input and output eases troubleshooting and diagnostics

· Access to reader’s RS-232 serial interface

Figure 1 – Speedway^® Revolution GPIO Box with HD15 Cable

Mechanical Specifications

Electrical Specifications

Warning: Only use the supplied HD15 cable. Use of a standard VGA cable may damage the reader.

Environmental Specifications

Example Application Scenarios

Connecting an Allen-Bradley Sensor

An Allen-Bradley 42CM PNP laser sensor can be quickly and easily connected to the Speedway Revolution GPIO Box using the A-B 889D connecting cable:

1. Unplug the power and reader connection cables from the GPIO Box.

2. Remove the clear, plastic cover using a screwdriver.

3. Loosen the cable gland and insert the bare wire ends of the cable into the GPIO Box.

4. Connect the brown wire to a Vcc to the right of the input you wish you to use and tighten down the screw.

5. Connect the Blue wire to GND to the left of the input.

6. Connect either the black or the white wires to the input terminal you wish to use. (The black wire associates to the Light Operate mode of the sensor and the white associates to Dark Operate.)

7. Tighten the cable gland to cinch down on the cable.

8. Replace the clear lid and plug the reader and power cables back into the GPIO Box.

Use the Multi-Reader application to verify that the sensor is working correctly, and triggering on the designated markings.

Power Low Wattage Light Signals

In many applications it is helpful to utilize a light stack to indicate the status of an RFID system. By using the four GPO Outputs of the Speedway Revolution, an application can turn on or turn off different lights depending upon which antenna is operating, if the reader is currently writing tags, or if it has encountered an error while writing.

You may connect LED or low wattage (less than 6 W) lights directly to each OUT signal and either the neighboring GND or Vcc depending upon whether you want the light to turn on when the GPO is high or low. Or, connect two lights to the same signal by connecting one to Vcc and the other to GND. In this case, when the GPO signal is high, one light turns on and when the GPO goes low, the other light will turn on.

Power High Wattage Devices and Using the Relay

By using the on-board relay, you can interface to, and control high wattage devices.

To use the relay, simply move the top jumper, labeled JGPO, on the GPIO Box board to the left two pins, labele d RLY and RO1. This action connects the GPO1 signal from the Speedway Revolution to the control circuitry for the relay. You can then connect the device with which you wish to interface to the three terminals on the top left of the board. One connection will always be connected to the COM, or common, connection. The other two connections will be either a short to COM or an open, depending on the value of GPO1. If GPO1 is low, then NC (normal closed) is shorted; when GPO1 is high, NO (normal open) is shorted.

To power a high wattage light, connect COM to ground and NO to one terminal of a light. The other terminal of the light should be connected to an appropriate power source.

When GPO1 is low, NO will be an open circuit and will not allow the light to turn on. When GPO1 is high, it will short NO to ground and turn on the light. The relay can be switched even while using the 5V supplied by Speedway Revolution.

Note: when using the relay, OUT1 signal will no longer operate and will always output as a high signal.

Using Speedway Revolution’s 5V Supply

A feature of the Speedway Revolution is the 5V supplied through the GPIO port. By using this power supply, you may provide a power source to low-power logic devices without requiring a separate power supply. To utilize the 5V supply from the reader, move the bottom two jumpers to the left two pins. In this configuration, the row labeled Jplus should have the jumper connecting the pins labeled 5V and Vcc. The row labeled Jminus should have the jumper connecting the pins labeled RGND and GND.

Note: when using the reader’s supplied power source, the opto-isolation built within Speedway Revolution is bypassed, which may cause signal degradation.

Ordering Information

Notices:

This accessory may only be used with an Impinj reader or “Powered by Impinj” reader. Using this accessory with any other device voids the accessory’s warranty and may cause damage to the accessory or device.

Impinj assumes no responsibility for determining if the accessory and operation of the accessory with a reader product complies with laws, guidelines, and regulations of the region in which the accessory is located and operated.

The information contained in this document is confidential and proprietary to Impinj, Inc. This document is conditionally issued, and neither receipt nor possession hereof confers or transfers any

right in, or license to, use the subject matter of any drawings, design, or technical information contained herein, nor any right to reproduce or disclos e any part of the contents hereof, without the prior written consent of Impinj and the authorized recipient hereof.

Impinj reserves the right to change its products and services at any time without notice. Impinj assumes no responsibility for customer product design or for infringement of patents and/or the rights of third parties, which may result from assistance provided by Impinj. No representation of warranty is given and no liability is assumed by Impinj with respect to accuracy or use of such information.

These products are not designed for use in life support appliances, devices, or systems where malfunction can reasonably be expected to result in personal injury.