Beckhoff C1220 Uživatelský manuál stáhnout pdf (Strana 7)

Eiserstraße 5 / D-33415 Verl / Telefon 05246/963-0 / Telefax 05246/963-149

7 Software description of functions

Beckhoff Lightbus - PC interface card C1220

Software description of functions

General

Memory breakdown of the

Address area Function

interface

0x0000 - 0x0BFF

Data area

(Inputs, outputs, flags)

3 kbytes

0x0C00 - 0x0CFF

Handshake channel 0: PC -> C1220

(configuration, test, analyse)

0x0D00 - 0x0DFF

Handshake channel 1: C1220 -> PC

(configuration, test, analyse)

0x0E00 - 0x0FEF

reserved

0x0FF0 - 0x0FFF

GCB (General control block)

The interface between the PC bus and the C1220 module enables the

following functions:

- Data transfer of the process image

- Test and analysis functions for the II/O system

- Configuration

- Control of process images

By way of the communication channels, the Beckhoff Lightbus can be

configured by means of four functions. In doing so, the inputs / outputs of

the decentralized I/O modules are assigned to the addresses in the

DPRAM. A total of nine further functions can also be requested via the

communication channels for test and analysis functions.

The data areas for the CDLs are located in the bottom 3 kbyte area that the

C1220 module occupies in the address space. The request to update the

process image is realized by setting a bit in the request mask of the GCB

(General Control Block). The ready message for this request is obtained

from the corresponding bit in the ready mask of the GCB.

1 2 3 4 5 6 7 8 9 10 11 12 ... 29 30

Žádné komentáře

Beckhoff C1220 Uživatelský manuál Strana 7