Measure

The TwinCAT modules in the TwinCAT Power Collector of the Measure group interact with EtherCAT power measurement terminals of the EL34xx series and handle both their configuration and the acquisition of measurement data.

The focus is on measuring the three phase voltages against neutral conductor and the three phase currents in a star connection.

CoE parameters are automatically set according to the module parameters via SDO communication. Measured values are read out via PDOs, variant handling and, if necessary, additional SDO communication. The recorded data is structured and made available for further processing in the system via defined Data Areas.

PDOs ensure cyclic data exchange, while SDOs and variant handling are suitable for slower updated measured values and large amounts of data. Depending on the configuration and selection of process data, the modules use a combination of PDOs, SDOs and variant handling to record all process data. This ensures low utilization of cyclic communication via EtherCAT, while at the same time ensuring complete and timely acquisition of all measurement data.

The following is an overview of supported terminals and the corresponding modules:

Terminal

Module

EL3443

TcPowerMeasureEL3443

EL3453

TcPowerMeasureEL3453

EL3444

TcPowerMeasureEL3444 (follows with version 0.1.1)

EL3446

TcPowerMeasureEL3446 (follows with version 0.1.1)

 

Further modules of the Measure group for EtherCAT Terminals of the EL37x3 and ELM3xxx series can be found in the documentation for TF8350 | TwinCAT 3 Power Technologies.