Changing The Size Of The Process Data - Beckhoff BK3 0 Series Documentation

Bus coupler for profibus-dp

Table of Contents

Extended functions

Enabling/disabling via the 2-byte PLC interface or through KS2000

The terminals are enabled or disabled through table 1, registers 0-31:

Bit

0,1

2,3

4,5

6,7

8,9

10,11

12,13

14,15

...

14,15

Note the size of the Cfg data

It can happen under multi-configuration mode that the CfgData exceeds 64 bytes.

In such a case, the CfgData [} 76] must be enlarged.

7.5

Changing the Size of the Process Data

Exceeding the input data length (InputData)

By default, a maximum of 128 bytes of input data is set on the Bus Coupler.

The maximum lengths of the DP buffers can be changed, although the amount by which a length is

increased has to be subtracted from another, and the sizes must only be modified in 8-byte steps:

Exceeding the output data length (OutputData)

By default, a maximum of 128 bytes of output data is set on the Bus Coupler.

The maximum length of the DP buffer can be changed. The amount, however, by which one length is

increased must be taken away from another, and it must be noted that the sizes can only be changed in 8-

byte steps:

Description

Assignment for terminal 1

0: DP-DataExchange (Default)