SIPLUS SIWAREX U is available with either one or two measurement channels. One measurement channel is required for each scales.

The primary task of SIWAREX U involves measuring the sensor voltage and converting this measurement to a weight value. The signal can be digitally filtered if required.

Apart from determining the weight, SIWAREX U also monitors two freely parameterizable limit values per measurement channel (min. or max.).

SIWAREX U is calibrated at the factory. This ensures both that theoretical calibration of the scales is possible without the need for calibration weights, and that modules can be replaced without the need for recalibrating the scales. In combination with "active bus modules", modules can be replaced during normal operation.

Uniform, integrated communication between all system components supports quick, reliable and low-cost integration and diagnostics in process plants.

SIWAREX U has two serial interfaces. The TTY interface is used to connect up to four digital remote displays. In addition to the two weight values for weighing channels 1 and 2, two further values that can be set by the SIMATIC can also be indicated on the remote displays.

A PC can be connected to the RS232 interface for adjusting the scales.

SIWAREX U can not only be integrated into the system software via the classical PLC programming languages STL (Statement List), LAD (Ladder Diagram), FBD (Function Block Diagram) or SCL (Structured Control Language). Graphical configuration in CFC is also possible (CFC = Continuous Function Chart). Appropriate faceplates are available in PCS 7 for visualizing the scales.

In contrast to electronic weighing systems connected in series, with SIWAREX U there is no need for expensive add-on modules for connecting to SIMATIC.

Integration into SIMATIC results in freely programmable, modular weighing systems that can be adapted to internal company requirements as desired.

Using the SIWATOOL U software, the SIWAREX weighing modules can be set up with the convenience of Windows independently of the automation system. All the basic settings for the weighing modules can be specified in input screens, saved and printed out for the plant documentation.

A fast error search is assured in online mode thanks to the wide-ranging diagnostic functions of SIWATOOL U.

The SIWAREX U weighing module can also be used for hazardous areas (Zone 2). An intrinsically safe infeed can be implemented for the load cells through an optional Ex interface.