DeviceNet added to temperature/process controllers
An
Eurotherm product story
Edited by the Engineeringtalk editorial team
May 3, 2001
Eurotherm has added DeviceNet communications facilities to its main family of temperature and process controllers, to enable them to communicate cost-effectively with a wide range of other devices
Eurotherm has added DeviceNet communications facilities to its main family of temperature and process controllers, making the feature a standard option on all 2200, 2400 2500, 2600 and 2700 Series controllers and indicators.
The new feature will allow these powerful instruments to communicate cost-effectively with a wide range of other devices within the process and machine control environment.
DeviceNet is a low cost industrial network designed specifically to connect industrial devices such as, PLCs, drives, operator displays and process controllers.
The protocol eliminates expensive hardwiring while providing device level diagnostics.
The DeviceNet protocol offers significant advantages over traditional, serial based communication networks such as Modbus.
By the use of automated software configuration tools and simple wiring layouts, engineering cost and time to design, configure and commission a DeviceNet installation is reduced.
In addition, by using common definition of simple devices, it allows full interchangeability while making interconnectivity of more complex devices possible.
In addition to reading the state of discrete devices, DeviceNet allows easy access to operating node variables such as process temperatures, alarm status as well as system diagnostic status.
The specification and protocol are also fully open, and there is currently a wide choice of DeviceNet-compatible control and instrumentation equipment from a wide range of vendors.
Finally, the DeviceNet communications protocol is based on a broadcast-oriented system originally developed for the automotive market.
It was designed to replace expensive vehicle wiring harnesses and is now used by many automotive manufacturers throughout the world.
As a result, the protocol has been proved to be highly reliable in demanding safety critical applications.
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