Beckhoff BK2000 Manual do Utilizador descarregar pdf (Página 23)

Beckhoff-Lightbus coupler BK2000

BK2000 23

Configuration software

Interface type Interface designation Configuration software

for master configuration

PC interface

C1200

C1220

S1100

S1120 and

contained in TwinCAT, S2000,

S2100 and S2200

PC with

Beckhoff-

Lightbus

Beckhoff IPC products with

C1230

contained in TwinCAT, S2100

and S2200

PLC interface

C1xxx C1xxx

General

Ensuring data

consistency

Consistency of a station's data is ensured by the data transfer protocol of

the Beckhoff-Lightbus. Consistency throughout the entire process image

can be achieved by activation of the "Update" and "Int" commands in the

master.

Asynchronous access by the controller CPU (in most cases PLC or IPC) to

the data area of the Beckhoff-Lightbus master may lead to inconsistency.

The Beckhoff-Lightbus masters contain mechanisms for avoiding

asynchronous access, thus ensuring data consistency. For further

explanations, please refer to the manuals of the corresponding interfaces.

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