Home : Introduction to INTERBUS : Technical Overview

INTERBUS Network Description

INTERBUS is an open systems approach to a high performance, ring-based, distributed device network for manufacturing and process control. INTERBUS is a high-efficiency protocol designed for today's high-speed control requirements. An INTERBUS system consists of a controller board installed into a computer (PC, VME, etc.) or PLC that communicates to a variety of I/O devices. INTERBUS is operable with most standard PC software packages and operating systems. INTERBUS is supported by over 300 third-party I/O device manufacturers worldwide.

INTERBUS Protocol

The INTERBUS protocol provides the high throughput demanded by today's advanced I/O network requirements. I/O data is transmitted in frames that provide simultaneous and predictable updates to all devices on the network. Secure transmissions are ensured by the protocol's CRC error checking capabilities. Furthermore, comprehensive diagnostics allow you to pinpoint the cause and location of errors. This provides maximum network uptime. An embedded messaging protocol allows you to send complex parameter and message data across the INTERBUS network.

The basic concept of an open bus system is to allow a similar exchange of information between devices produced by different manufacturers. Information includes commands and I/O data that have been defined as a standard profile by which devices operate. Standard profiles are available for drives, encoders, robotic controllers, pneumatic valves, etc. The INTERBUS protocol, DIN 19258, is the communication standard for these profiles. It is an open standard for I/O networks in industrial applications.

Data Throughput - Make Your I/O Data Fly

The INTERBUS (IBS) network provides a serial link capable of transmitting I/O data at real-time speeds. Real-time means the I/O data is updated many times faster than the application can solve the logic.

The INTERBUS Data Throughput Data Sheet (pdf, 13K) includes a chart with examples of INTERBUS throughput times for various combinations of analog and digital I/O points.




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