Beckhoff EL5101 | EtherCAT Terminal, 1-channel encoder interface, incremental, 5 V DC

The EL5101 EtherCAT Terminal is an interface for the direct connection of

incremental encoders with differential signals (RS422) or TTL single ended

signals. Input frequencies up to 1 MHz can be evaluated. Two additional

24 V digital inputs are available for storing, blocking and setting the counter

status. The error message output of an encoder can be connected and

evaluated via the status input. The 5 V and 24 V supply of the encoder can

be provided directly via the terminal connection points.

Special features:

• save, lock, set counter

• integrated frequency and period measurement

• optionally usable as 5 V up/down counter

• microincrements

• synchronous reading of the position value via distributed clocks

• timestamp on the last-registered incremental edge

In addition, the EL5101 enables the measurement of a period or frequency

with a resolution of 100 ns. With the optional interpolating microincrement

functionality, the EL5101 can provide even more accurate axis positions for 

dynamic axes. It also supports synchronous reading of the encoder value

together with other input data in the EtherCAT system via the high-precision

EtherCAT distributed clocks (DC). A timestamp for the last-registered

incremental edge is also available. The use of encoder profiles enables

simple and fast linking of the process data for motion control applications.