Master parameterization

Configuration at a Rockwell/Allen Bradley controller

The BX5200 and BC5250 have two configuration types. In the default configuration, the coupler is supplied and has the following DeviceNet characteristics:

AutoBaud
8 bytes inputs DN (from address %IB1000) - these are then the outputs on the master
8 bytes outputs DN (from address %QB1000) - these are then the inputs on the master

If it is necessary to change the preset data, a special library is required.

In the TwinCAT configuration, it is possible with the aid of the System Manager to set the DN Slave-specific characteristics. The library is not to be used for the default configuration.

The EDS file and the icon file are always integrated in the RSNetworx with the EDS wizard:

Finally the DeviceNet network is searched with the Network-Browse for the nodes within the network. If the BC/BX are correctly connected to the network with the correct baud rate, they are recognized and correspondingly displayed:

Master parameterization 2: — Network Browse

Double-clicking the icon opens the configuration dialog for the units.

Below Parameter appear the I/O data lengths that are currently set at the BC/BX.

Master parameterization 3: — I/O data lengths set on the BC/BX

The produced and consumed data should always be considered from the point of view of the network, i.e. BC/BX produce data for DeviceNet and consume data from DeviceNet.

The data produced are thus the input data of the master, i.e. data that are sent from the BC/BX to the master: BC/BX Produced Size = Input Size Scanner
The data consumed are the output data of the master, i.e. data that are sent from the master to the slave: BC/BX Consumed Size = Output Size Scanner

A double-click on the Scanner/DeviceNet Master icon opens the configuration dialog. The recognized modules appear in the Available Devices list and must now be added to the Scanlist.

Master parameterization 4: — Adoption of the detected modules into the scan list

A double-click on the icon of the device to be configured opens the dialog for setting the I/O data lengths

Master parameterization 5: — Setting of the I/O data lengths

BC/BX Produced-Size = Input-Size
BC/BX Consumed-Size = Output-Size

Furthermore, it must be ensured that the I/O operation mode selected here corresponds to the I/O mode selection.

The Interscan Delay, that is the time between each I/O cycle, must be selected according to the requirements of the BC/BX with respect to the size of the PLC program and the I/O data lengths.

Master parameterization 6: — Selection of the interscan delay

If there are components in the network that require a fast I/O cycle, the I/O cycle can be set to Background under Poll Rate in the I/O parameter settings. More detailed information about this can be obtained from the scanner manual.

Master parameterization 7: — Setting the poll rate