InHand InVehicle VG710 Quick Manual

1-wire

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VG710 1-Wire Quick Guide

Introduction

1-Wire is a device communication bus system designed by Dallas

Semiconductor Corp. that provides low-speed data, signaling, and power over a

single conductor. It is typically used to communicate with small inexpensive

devices such as digital thermometers and iButton devices. iButton®

devices are small, durably packaged modules with globally unique digital

addresses.

With its integrated 1-Wire interface, VG710 acts as bus master could

communicate with iButton device or 1-Wire thermometer.

Users should first correctly install their 1-Wire device, and then they can check

their 1-Wire device detail via VG710's WebUI.

Install your 1-Wire device

The following figure shows 20-pin IO connector of VG710, which includes 1-Wire

interface support.

Table of Contents

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Page 1 VG710 1-Wire Quick Guide Introduction 1-Wire is a device communication bus system designed by Dallas Semiconductor Corp. that provides low-speed data, signaling, and power over a single conductor. It is typically used to communicate with small inexpensive devices such as digital thermometers and iButton devices. iButton® devices are small, durably packaged modules with globally unique digital addresses.
Page 2 The following table details the 20-pin IO connector function assignment, and pin 3 is reserved for 1-Wire application. When install your 1-Wire device, you should connect its DQ pin to pin 3 of VG710. Also you should connect its VDD and GND pins to GND pin of VG710. Make sure your installation is ready, and all these pin connections are OK.
Page 3 No Connection shows Disc your Connection Status onnected if no 1-Wire device is connected or 1-Wire device has not been correctly installed. iButton device If your iButton device is correctly installed, it shows as the following.
Page 4 1-Wire thermometer If your 1-Wire thermometer is correctly installed, it shows as the following. Note that it takes a little longer to retrieve the temperature, and you can enable page auto refresh to check the temperature changes. The following example selects 5 seconds and then click Refresh button to enable page auto refresh.