BARIX X8 Manuale utente

BARIX X8

I/O to RS-485 Modbus converter

for commercial interfacing,

control and home automation

applications

PRODUCT MANUAL

Version: 01.05

Date: 10/26/2006

For Firmware Version 6

BARIX X8

Barix AG

Seefeldstrasse 303

CH-8008 Zürich

Switzerland

T +41 43 433 22 11

F +41 44 274 28 49

Barix Technology Inc.

2182 Helena Road

St. Paul, MN 55128

USA

T (866) 815-0866

F (209) 755-8435

www. barix.com

info@barix.com

Table of Contents

Introduction.................................................................1

Hardware.......................................................................2

Case....................................................................................................2

Connectors......................................................................................2

Power supply requirements......................................................2

Inputs..................................................................................................2

Outputs.............................................................................................2

5VDC output...................................................................................3

RS-485................................................................................................3

LED Indicators................................................................................3

Configuration Memory................................................................3

Connectors....................................................................4

Connector Pin out overview...................................................4

J1 Pin out I/O..................................................................................4

J3 Pin out Power/RS-485...........................................................5

J4 Pin out GND/Shield Jumper................................................5

J5 Pin out Shield............................................................................6

LED 1..4 Functions.......................................................................6

Protocol support........................................................7

General..............................................................................................7

Supported Standard Commands.............................................7

Special Commands........................................................................7

Exceptions........................................................................................8

Command 68...................................................................................8

Command 69...................................................................................9

Command 70...................................................................................9

Command 71................................................................................10

Configuration.............................................................11

Default Parameters....................................................................11

Connecting I/O..........................................................12

Contacts on inputs....................................................................12

LEDs on outputs.........................................................................12

TTL devices on I/O....................................................................13

WIEGAND device......................................................................13

Barix TS Temperature Sensors............................................15

Connecting a Barix Barionet controller........16

Power wiring................................................................................16

RS-485 wiring...............................................................................16

Reference wire............................................................................16

RS-485 termination....................................................................16

Modbus Register Map.............................................17

Live I/O...........................................................................................17

Configuration Data....................................................................18

Complete Register Map...........................................................20

Complete Coils Map..................................................................21

Technical specifications........................................23

CPU..................................................................................................23

I/Os...................................................................................................23

5VDC output................................................................................23

I/O, RS-485/Power, shield Connectors.............................23

Host Interface..............................................................................23

Power Supply Requirements..................................................23

LED Indicators.............................................................................23

Case..................................................................................................23

Misc..................................................................................................23

Conformity....................................................................................23

PRODUCT MANUAL - BARIX X8 - V01.05 - 10/26/2006

Introduction

The BARIX X8 is an I/O to RS-485 Modbus converter for com-

mercial interfacing, control and home automation applications.

Using the industry standard Modbus protocol over 2-wire RS-485

the device can be controlled from any Modbus capable master.

Eight independent configurable inputs/outputs allow the use of

the BARIX X8 in a wide range of I/O applications:

- General I/O to RS-485 converter (inputs and outputs)

- Up to eight push buttons (inputs) or LEDs for status display

- Local analog voltage reading (0-5VDC, 8 inputs)

- Local temperature (up to 8 Barix TS digital sensors)

- WIEGAND reader to RS-485 converter (2 inputs for D0 and

D1, other 6 I/Os usable with standard functions)

The device is configured via the serial interface using standard

Modbus read/writes. If the device ID is unknown, a special

command is available, which can be sent via broadcast and uses

the serial number of the device to send it new configuration info.

If the address of the device is not known, it can be reset to default

parameters (see chapter Configuration).

The protocol supported is Modbus/RTU at 19200 (default) and

9600 Baud, with even (default) or no parity.

Introduction · 1

PRODUCT MANUAL - BARIX X8 - V01.05 - 10/26/2006

Hardware

The BARIX X8 I/O to RS-485 Modbus converter comes in an

open plastic case.Two mounting brackets with 5mm holes allow

mounting on surfaces but can be cut off (predetermined cut line)

if not used.

The Power/RS-485, I/O (I/O, 5Vout,GND) and cable shield are

available on 3 spring contact connector blocks for wires

AWG28 - AWG16 / 0.08 - 1.3 mm2

The BARIX X8 is equipped with a universal power input and

accepts both AC and DC voltage.The AC supply range is12 to 24

Volts and 9 to 30 Volts when powered by a DC power supply.

A voltage regulator controls the internally needed operating

voltage of 5VDC.The BARIX X8 consumes with all outputs

activated 1 Watt max. The BARIX X8 is reverse polarity

protected.

Attention:When powering the BARIX X8 and other BARIX

devices (Barionet, IO12, R6), connected over RS-485, using a single

power supply only a DC type power supply can be used as the

RS-485 interfaces are not completely potential free.

All I/O pins are directly connected to the CPU and the absolute

rating is TTL level (0 to 5VDC). When used as digital input the

signal is filtered (48 milliseconds period for debouncing) to allow

for direct connection of buttons or contact closures.

The analog value of each input is digitalized every 16 milliseconds

(sampling rate 62.5 Hz) with a resolution of 10bit (0 to 1023) and

is stored in separate Modbus registers.

On each input a BARIX TS digital temperature sensor can be

attached for precise temperature reading.

All I/O pins are connected to the CPU directly and the absolute

rating is TTL level (0..5VDC). Each output can sink or source up

to 20mA. See 5VDC output for total current limitations !

Hardware ·2

Power supply

requirements

Connectors

Inputs

Case

Outputs

PRODUCT MANUAL - BARIX X8 - V01.05 - 10/26/2006

A regulated 5VDC output is available to provide power to small

devices, LEDs etc.To prevent overheating of the voltage regulator

the sourcing current of 5VDC and all used outputs combined

should not exceed 24mA @ 30VDCVin, 32mA @ 24VDC Vin,

85mA @ 12VDCVin or 100mA@ Vin <= 11VDC.

The BARIX X8 has an RS-485 host interface, available on a spring

contact connector block.

Besides A and B signals for the differential, bidirectional bus

signal, a third connection is available, commonly referred to as

reference ground. This signal is internally tied to signal ground

via a 100 Ohm series resistor.

Termination resistors are NOT provided on-board. A termination

resistor may be added at each end of the RS-485 bus if required.

The BARIX X8, as well as other Barix I/O extension units, feature

soft pull-up (B) and pull down (A) 10kOhm resistors, which force

the inactive bus to a relatively high impedance, idle condition.

Both A and B line signals are heavily protected against ESD

(Electrostatic Discharge).

Supported interface configurations are

19200 baud, 8bit, even parity, 1 stop bit (**default**)

19200 baud, 8bit, no parity, 1 stop bit

9600 baud, 8bit, even parity, 1 stop bit

9600 baud, 8bit, no parity, 1 stop bit

4 LED indicators on the unit show the conditions CPU heartbeat

as well as RS-485 receive and transmit activity.

The BARIX X8 contains 256 bytes of non volatile configuration

memory (EEPROM) which can be read and (most of it) written via

standard Modbus commands.

Hardware ·3

Configuration

Memory

LED Indicators

RS-485

5VDC output

PRODUCT MANUAL - BARIX X8 - V01.05 - 10/26/2006

Connectors

Eight I/O signals, signal ground and a regulated 5VDC output are

available on J1.

Pin Function Pin Function

1 Signal GND 6 I/O 3

2 I/O 7 7 I/O 2

3 I/O 6 8 I/O 1

4 I/O 5 9 I/O 0

5 I/O 4 10 VCC (5VDC)

For ratings see sections Inputs, Outputs and 5VDC output

in chapter Hardware.

Connectors · 4

Connector Pin out

overview

| 5 | 4 | 3 | 2 | 1 |

| 5 | 4 | 3 | 2 | 1 | J3

J1 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9

| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |10|

|10|

J 4 | 1 | 2 |

LED

LED | 1 | 2 | 3 | 4 |

| 1 | 2 | 3 | 4 |

J1 Pin out

I/O

Indice

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