Sensor and communication interfaces

(e.g. 4 - 20 mA, 0 - 10 V, relay outputs, CAN, Ethernet, GSM, USB ...)

For integration into the realm of controls, different program codes have now been made available so that the analog sequential signal outputs of the sensors can be interpreted. This has the great advantage that just one analog input of the PLC is required for parallel transmission of up to four signals. This program code is currently already available for a leading range of PLC controls. If the user requires individual data processing, the sequential signal output can however be split into four individual outputs with the aid of the CSI-B-2 interface converter. If the sensors in CM systems are used for diagnosing vibrations such as, for example, in transmission technology, a modulator can be used which converts the sequential signal output into a frequency modulated output, significantly reducing the outlay for wiring as well.

To read out from the internal data memory, the sensors have the HSI connection (HYDAC Sensor Interface) which first and foremost enables bidirectional data communication with the HYDAC measurement units. These interfaces by which the connected sensor is automatically recognized allow, on the one hand, the data to be read out and on the other hand, the parameters to be set on the sensors. If the user then wants to revert to their own measurement devices or to a measurement PC, they can transfer the same data using an interface converter via the serial interface RS232 or the USB port on their platform. Data communication with superordinate measurement devices is therefore very easy.

The interface range is rounded off with a GSM module (CSI-F-10) which reads out the switching outputs from the sensors and, when specific threshold values are exceeded, sends a text message to the operator. Once connected to the GSM module, the measurement data can be read out.

This brief description demonstrates the universal potential for integration and the open hardware structure (irrespective of the manufacturer) which has been created by the systematic development of the interface range.