BECKHOFF BK5200 User Manual

DeviceNet Coupler
BK5200, BK5210, LC5200

Technical Documentation

Version 1.3
2006-10-24

Please note the following

Target group

Safety requirements

This description is only intended for the use of trained specialists in control
and automation engineering who are familiar with the applicable national
standards.

The responsible staff must ensure that the application or use of the
products described satisfy all the requirements for safety, including all the
relevant laws, regulations, guidelines and standards.

The documentation has been prepared with care. The products described are,
however, constantly under development. For that reason the documentation is not
in every case checked for consistency with performance data, standards or other
characteristics, and does not represent an assurance of characteristics in the sense
of § 459, Para. 2 of the German Civil Code. In the event that it contains technical or
editorial errors, we retain the right to make alterations at any time and without
warning. No claims for the modification of products that have already been supplied
may be made on the basis of the data, diagrams and descriptions in this
documentation.

This manual is copyrighted. Any reproduction or third party use of this protected

©

publication, whether in whole or in part, without the written permission of Elektro
Beckhoff GmbH, is forbidden.

BK52x0

Table of contents

Table of contents

1. Foreword 4

Notes on the documentation 4

Liability Conditions 4
Delivery conditions 4
Copyright 4

Safety Instructions 5

State at Delivery 5
Description of safety symbols 5

2. Basic Principles 6

The Beckhoff Bus Terminal System 6
The interfaces 8

Power supply 8
Power contact feed points 9
Power contacts 9
Fieldbus connection 9
Configuration interface 9
K-Bus contacts 9
Electrical isolation 10

Operating modes of the Bus Coupler 11
Mechanical construction 12
Technical data 14
Peripheral data in the process image 16
Start-up procedure and Diagnostics 18

3. BK5200, BK5210, LC5200 DeviceNet 20

Introduction to the system 20
Configuring the Bus Coupler 22
Connector Pin assignment / DeviceNet connection 23
Data exchange 24
Light-emitting diodes 25
Vendor ID 26
DeviceNet Group 26
Bus cable: length, assignment 27
Electrical isolation 28

4. Appendix 29

Example: composition of a process image in the Bus Coupler 29

5. Support and Service 32

Beckhoff's branch offices and representatives 32

Beckhoff Headquarters 32

BK52x0 3

Foreword

Foreword

Notes on the documentation

This description is only intended for the use of trained specialists in control and automation engineering
who are familiar with the applicable national standards. It is essential that the following notes and
explanations are followed when installing and commissioning these components.

Liability Conditions

The responsible staff must ensure that the application or use of the products described satisfy all the
requirements for safety, including all the relevant laws, regulations, guidelines and standards.

The documentation has been prepared with care. The products described are, however, constantly under
development. For that reason the documentation is not in every case checked for consistency with
performance data, standards or other characteristics. None of the statements of this manual represents a
guarantee (Garantie) in the meaning of § 443 BGB of the German Civil Code or a statement about the
contractually expected fitness for a particular purpose in the meaning of § 434 par. 1 sentence 1 BGB. In
the event that it contains technical or editorial errors, we retain the right to make alterations at any time
and without warning. No claims for the modification of products that have already been supplied may be
made on the basis of the data, diagrams and descriptions in this documentation.

Delivery conditions

In addition, the general delivery conditions of the company Beckhoff Automation GmbH apply.

Copyright

©

This documentation is copyrighted. Any reproduction or third party use of this publication, whether in

whole or in part, without the written permission of Beckhoff Automation GmbH, is forbidden.

4 BK52x0

i

Foreword

Safety Instructions

State at Delivery

All the components are supplied in particular hardware and software configurations appropriate for the
application. Modifications to hardware or software configurations other than those described in the
documentation are not permitted, and nullify the liability of Beckhoff Automation GmbH.

Description of safety symbols

The following safety symbols are used in this documentation. They are intended to alert the reader to the
associated safety instructions..

This symbol is intended to highlight risks for the life or health of personnel.

Danger

This symbol is intended to highlight risks for equipment, materials or the

Attention

environment.

This symbol indicates information that contributes to better understanding.

Note

BK52x0 5

Basic Principles

Basic Principles

Up to 64 Bus Terminals

each having 2 I/O channels
for each signal form

de-centralised wiring of the
I/O level

IPC as controller

Bus Couplers for all usual
bus systems

Standard C - rail assembly

Modularity

Display of the channel state

K-Bus

End terminal

The Beckhoff Bus Terminal System

The Bus Terminal system is the universal interface between a fieldbus
system and the sensor / actuator level. A unit consists of a Bus Coupler as
the head station, and up to 64 electronic series terminals, the last one
being an end terminal. For each technical signal form, terminals are
available each having two I/O channels, and these can be mixed in any
order. All the terminal types have the same mechanical construction, so
that difficulties of planning and design are minimised. The height and depth
match the dimensions of compact terminal boxes.

Fieldbus technology allows more compact forms of controller to be used.
The I/O level does not have to be brought to the controller. The sensors
and actuators can be wired de-centrally, using minimum cable lengths. You
can locate the controller installation anywhere within the plant. The use of
an Industrial PC as the controller means that the operating and observing
element can be implemented in the controller’s hardware. The controller
can therefore be located at an operating panel, in a control room, or at
some similar place. The Bus Terminals form the de-centralised input/output
level of the controller in the control cabinet and the subsidiary terminal
boxes. The power sector of the plant is also controlled over the bus system
in addition to the sensor/actuator level. The Bus Terminal replaces the
conventional series terminal as the wiring level in the control cabinet. The
control cabinet can have smaller dimensions.

The Beckhoff Bus Terminal system unites the advantages of a bus system
with the possibilities of the compact series terminal. Bus Terminals can be
driven within all the usual bus systems, thus reducing the controller parts
count. The Bus Terminals then behave like conventional connections for
that bus system. All the performance features of the particular bus system
are supported.

The easy, space-saving, assembly on a standard C-rail, and the direct
wiring of actuators and sensors, without cross-connections between the
terminals, standardises the installation. The consistent labelling scheme
also contributes.

The small physical size and the great flexibility of the Bus Terminal system
allows it to be used wherever a series terminal is also used. Every type of
connection, such as analog, digital, serial or the direct connection of
sensors can be implemented.

The modular assembly of the terminal strip with Bus Terminals of various
functions limits the number of unused channels to a maximum of one per
function. The presence of two channels in one terminal is the optimum
compromise of unused channels and the cost of each channel. The
possibility of electrical isolation through potential feed terminals also helps
to keep the number of unused channels low.

The integrated LEDs show the state of each channel at a location close to
the sensors and actuators.

The K-Bus is the data path within a terminal strip. The K-Bus is led through
from the Bus Coupler through all the terminals via six contacts on the
terminals‘ side walls. The end terminal terminates the K-Bus. The user
does not have to learn anything about the function of the K-Bus or about
the internal workings of the terminals and the Bus Coupler. Many software
tools that can be supplied make project planning, configuration and
operation easy.

6 BK52x0

isolation

contacts

DeviceNet

Power supply

Potential

Basic Principles

Potential feed terminals for
electrically isolated groups

The principle of the Bus
Terminal

The operating voltage is passed on to following terminals via three power
contacts. You can divide the terminal strip into arbitrary isolated groups by
means of potential feed terminals. The feed terminals play no part in the
control of the terminals, and can be inserted at any locations within the
terminal strip.

Up to 64 terminals may be located in a terminal strip, including the potential
feed terminals and end terminal.

Bus Coupler for the feed Bus end
BK5200 Bus Coupler terminal

terminal

K-Bus

DeviceNet

OVERFL

MS

RUN

BUS OFF

NS

CONNECT

I/O RUN

I/O ERR

BK5200

Bus couplers for various
fieldbus systems

PotentialPower

Various Bus Couplers can be used to couple the electronic terminal strip
quickly and easily to different fieldbus systems. It is also possible to
convert to another fieldbus system at a later time. The Bus Coupler
performs all the monitoring and control tasks that are necessary for
operation of the connected Bus Terminals. The operation and configuration
of the Bus Terminals is carried out exclusively by the Bus Coupler.
Fieldbus, K-Bus and I/O level are electrically isolated.

If the exchange of data over the fieldbus fails for a time, counter states are
retained, digital outputs are cleared, and analogue outputs take a value
that can be separately configured for each output when commissioning.

BK52x0 7

Basic Principles

Power LEDs

Bus Coupler / Power

Power supply for

C+

C-

00

X0

LC5200

Beckhoff

K-Bus

CAN-H, CAN-L

Power contacts

The DeviceNet Coupler
BK5200 / BK5210

The interfaces

A Bus Coupler has six different methods of connection. These interfaces
are designed as plug connectors and as spring-loaded terminals.

DeviceNet
connector

DeviceNet

OVERFL

MS

RUN

BUS OFF

NS

CONNECT

I/O RUN

I/O ERR

contacts

K-Bus
Power supply
Bus Coupler
24 V DC / GND

The DeviceNet coupler
LC5200

Configuration­Interface

BK5200

Input
Power contacts

Power contacts

The LC5200 Bus Coupler integrates the bus connection into the spring­loaded terminals.

0201

left:
fieldbus LEDs
right:

Address

K-Bus LEDs

selector

+ +

V+

Bus Coupler
and field level

V-

BK5200, BK5210:
24 V DC to the topmost
terminals “24 V” and “0 V”

8 BK52x0

S S

Screen

Power supply

The Bus Couplers require a 24 V DC supply for their operation. In the case
of the BK52x0 Bus Couplers the connection is made by means of the
upper spring-loaded terminals labelled “24 V” and “0 V”. This supply
voltage feeds not only the Bus Coupler electronics via the K-Bus, but also
the Bus Terminals. In the BK52x0 Bus Couplers the voltage supply for the
bus coupler electronics and that of the K-bus are electrically isolated from
the field level potentials.

Basic Principles

LC5200:
24V DC to the centre
terminal pairs

Bottom 3 terminal pairs for
feed

Maximum 24 V

Maximum 10 A

Spring contacts on the side

BK5200, BK5210: 5 pin
open style connector

LC5200: Bus connection
via spring loaded terminals

Serial interface under the
front cover

6 contacts on the side

The LC5200 Bus Coupler is supplied via the two central terminal pairs. The
power contacts pass the supply voltage on to the field level.

Power contact feed points

The bottom six connections with spring-loaded terminals can be used to
feed the supply for the peripherals. The spring-loaded terminals are joined
in pairs to a power contact. The feed for the power contacts has no
connection to the voltage supply for the bus coupler (BK52x0). The design
of the feed permits voltages of up to 24 V. The assignment in pairs and the
electrical connection between feed terminal contacts allows the connection
wires to be looped through to various terminal points. The current drawn
from the power contact must not exceed 10 A for long periods. The current
rating between two spring-loaded terminals is identical to that of the
connecting wires.

Power contacts

On the right hand face of the Bus Coupler there are three spring contacts
for the power contact connections. The spring contacts are hidden in slots
so that they can not be accidentally touched. By attaching a Bus Terminal
the blade contacts on the left hand side of the Bus Terminal are connected
to the spring contacts. The tongue and groove guides on the top and
bottom of the Bus Coupler and of the Bus Terminals guarantees that the
power contacts mate securely.

Fieldbus connection

The BK52x0 Bus Couplers have a recessed front surface on the left hand
side. The DeviceNet connection plug can be inserted here. A full
description of the fieldbus interfaces is found elsewhere in this manual.

In the LC5200 Bus Coupler the bus is connected directly at the upper
terminal pair.

Configuration interface

The BK52x0 Bus Couplers have an RS232 interface at the bottom of the
front face, whereas on the LC5200 it is located under the cover on the side.
The miniature connector can be joined to a PC with the aid of a connecting
cable and the KS2000 configuration software. The interface allows the
analog channels to be configured and also permits firmware updating.

The functionality of the configuration interface can also be reached via the
fieldbus using the object attributes for the register communication.

K-Bus contacts

In order to connect the Bus Coupler and Bus Terminals the Bus Coupler
has gold contacts on the right hand side. When the Bus Terminals are
pushed together the gold contacts automatically make the connection
between the Bus Terminals. The voltage supply to the K-Bus electronics in
the Bus Terminals and the data exchange between the Bus Coupler and
the Bus Terminals is carried out by the K-Bus. A part of the data exchange
takes place via a ring structure within the K-Bus. Opening the K-Bus, e.g.
by pulling out one of the Bus Terminals, opens the ring. Data exchange is
no longer possible. Special mechanisms nevertheless allow the Bus
Coupler to identify the location of the interruption and to report it.

BK52x0 9

Basic Principles

Periphery level

Bus Terminals

Bus Coupler

24 V DC

BK5200, BK5210:
3 potential groups:
Fieldbus
K-Bus
Peripheral level

BK5200, BK5210:
Structure of the potential
levels in the Bus Terminal
system

Electrical isolation

The Bus Couplers operate by means of three independent potential
groups. The supply voltage feeds the K-Bus electronics in the Bus Coupler
and the K-Bus itself, which are electrically separate. The supply voltage is
also used to generate the operating voltage for the fieldbus.

Remark: All the Bus Terminals are electrically isolated from the K-Bus. The
K-Bus is thus electrically isolated from everything else.

Fieldbus

K-Bus

LC5200:

The LC5200 does not provide electrical isolation from the fieldbus and
peripheral level. If the peripheral level nevertheless needs to have an
electrically isolated implementation, this can easily be achieved through the
use of isolating terminals (KL9xxx).

10 BK52x0