C1300-000 | Beckhoff C1300 Lightbus VME bus interface card

The Beckhoff Industrial Input Output System, which is abbreviated II/O System, consists of a smart central module and a field bus that is based on fiber optics. Picture 1 shows an overview of the II/O system.

The connection of the II/O system to the host system is established by a DPRAM. This is providing fast and comfortable communications.

The processing of the diverse signal states is supported by several II/O peripheral modules, which are linked in a ring structure.The use of fiber optics minimizes the sensitivity for interferences and allows a high transmission rate of 2.5 MBd. Errors, occuring in the FO–ring, will be detected and reported to the host system by the central module. Functions implemented for ring diagnosis, enable quick detection and correction of errors.

There is a speed and simplicity optimized communications protocol which, in the furthercourse of this documentation, will be called a telegram.

Communications on the FO-ring are controlled by the central module. This module will send telegrams, that pass each of the modules in the FO-ring and are eventually received and checked.

Technical Data

Port processor: Siemens SAB 80C166-S

Data connections: Beckhoff II/O Lightbus system

Transmission rate: 2,5 MBaud, 32 Bit of informations in 25 µsec

Power supply: from the VME Bus

Size PCB dimensions: 100 mm x 160 mm Front panel width about 20 m

>>> Refer to technical document: c1300en