Technology

Functioning

The EL1262 is a digital input terminal with two channels. It can read the voltage level not only cyclically with the EtherCAT cycle, but also several times in between based on distributed clock support of the EL1262. In the EL1262 the ESC (EtherCAT slave controller) handles the data communication to the EtherCAT fieldbus and supports the distributed clock functionality. This enables the ESC to read the inputs of the EL1262 cyclically and equidistantly with high precision and store the values in the memory. When the EtherCAT frame fetches the data from the EL1262, a whole set of process data is ready for transfer. The inputs can be sampled with significantly higher frequency than the fieldbus cycle. Hence the term oversampling.

Further information on commissioning can be found in section “Basic function principles