SCALE Components has announced the availability of a ControlNet network interface for the HI3030 multi-scale weight controller line from Hardy Instruments.
Managing director Ian Fleming said the HI3030 was a flexible weight controller that could monitor and control up to four scales simultaneously.
"The HI3030 can act as a front end to a PLC, PC or DCS system for applications such as level, batching, filling, dispensing and check weighing, or as a stand alone for simple control or weight monitoring."
As a bridge to a PLC, the HI3030s' four scales can share one network connection, whether it is DeviceNet, ControlNet, Allen-Bradley Remote I/O or Profibus.
"You can also link additional HI3030s with their multiple scales and share the same network connection," Mr Fleming said.
"Just like the other series 3000 products you can configure or monitor the HI3030 operating using your Palm OS PDA, web browser or network interface.
"So let's say you have eight storage tanks and you would like to monitor and control the weight in each of the tanks using your PLC.
"You could buy two HI3030s, each with four scale inputs and tie them together with the built in Ethernet communications. Bring all eight scales back to your PLC using just one of the HI3030s and its built-in DeviceNet or via an optional ControlNet, Profibus or Allen-Bradley Remote I/O network card."
"You can connect up to 16 controllers for a total of 64 scales through that same single interface. You can save wiring, time and money," he said.
With the flexible I/O mapping and twelve independent internal set points in the HI3030 alarms or enunciators can be directed to a local output or to any point on the plant network.