Beckhoff BK7300 User Manual download pdf (Page 10)

Basic information

6 BK7300

Configuration Interface

Serial interface under the

front cover

The standard bus couplers have an RS232 interface at the bottom of the

front face. 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 analogue channels to be configured. The functionality of the

configuration interface can also be reached via the fieldbus using the PLC

interface.

KS2000 Software

In order to link the MODBUS BK7300 coupler and the KS2000

configuration software, the coupler's address selection switch must be set

to "00", and it must be restarted (i.e. the coupler must be switched off and

then on again).

K-bus contacts

6 contacts at the side

The connections between the bus coupler and the bus terminals are

effected by gold contacts at the right-hand side of the bus coupler. When

the bus terminals are plugged together, these gold contacts automatically

complete the connection to the bus terminals. The K bus is responsible for

the power supply to the electronic components of the K bus in the bus

terminals, and for the exchange of data between the bus coupler and the

bus terminals. Part of the data exchange takes place via a ring structure

within the K bus. Disengaging the K bus, for example by pulling on one the

bus terminals, will break this circuit so that data can no longer be

exchanged. However, there are mechanisms in place which enable the bus

coupler to locate the interruption and report it.

Supply isolation

3 supply groups:

fieldbus

K-bus

peripheral level

The bus couplers operate with three independent supplies. The input

power supplies the electrically isolated K-bus circuitry in the bus coupler

and the K-bus itself. The power supply is also used to generate the

operating power for the fieldbus.

Note: All the bus terminals are electrically isolated from the K bus, so that

the K-bus is completely electrically isolated.

Setting up the power levels

in the bus terminal system

Periphery level

Bus terminalsBus coupler

Field bus

24 V DC

Terminal bus

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 39 40

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Beckhoff BK7300 User Manual Page 10

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