Interbus-S pioneers interoperability
Terry E. Rosenberg · InTech · 1996
End-user demands for interoperability among I/O devices from various vendors is fueling the trend toward open networks. However, the {open_quotes}openness{close_quotes} of a network does not guarantee interoperability simply because a device can connect to it. Connection is the easy part. There are two key aspects to interoperability: first, a stable network platform is needed; second, and most important, profiles are required that define the operation of a particular device. The Interbus-S open I/O network has been a pioneer in the area of interoperability. Its stable platform comes from a protocol chip that handles all network access and data traffic without the need for external software stacks. Device profiles for Interbus-S have been available for five years with eight different profiles already in use. Device profiles define the operating and programming methods of a particular device type. Operating definitions include startup sequence, default operating modes, and general behavior of the device. Programming definitions include command syntax, variable assignments, and terminal assignments. Device profiles offer many advantages to the user, such as the following: (1) An I/O device from one manufacturer can be exchanged with a device from another without impacting the software. (2) Application development is accelerated when devices function andmore » communicate identically. (3) Support and training is simplified when all devices operate identically. (4) Software tools incorporate the functionality of the devices to provide greater ease of use.« less