The EtherCAT I/O system provides a wide range with different signal terminals. Standard EtherCAT Terminals already offer full support for XFC technology. Synchronisation of the I/O conversion with the communication or – more precisely – with the distributed clocks is already standard in EtherCAT and is therefore supported by all terminals. Further developed XFC terminals offer additional special features that make them particularly suitable for fast or high-precision applications:

Oversampling

EL1262:
– 2-channel digital input 24 V DC
– time synchronisation across the system through distributed clocks
– jitter << 1 μs
– conversion time up to 1 μs or 1 Msample/s

The digital EL1262 oversampling input terminal offers an input signal sampling rate
that is better than the bus cycle time by a factor of 10 (configurable), enabling even
short signals to be recorded, measured or counted exactly.

EL2262:
– 2-channel digital output 24 V DC
– time synchronisation across the system through distributed clocks
– jitter << 1 μs
– conversion time up to 1 μs or 1 Msample/s

With the digital EL2262 oversampling output terminal, outputs can be switched on
and off within a 1 μs time frame, which is ideal for high-precision dosing applications, for example.

EL3742:
– 2-channel analog input 0…20 mA
– time synchronisation across the system through distributed clocks
– jitter << 1 μs
– conversion time up to 10 μs or 100 ksamples/s

EL3702:
– 2-channel analog input -10 V…+10 V
– time synchronisation across the system through distributed clocks
– jitter << 1 μs
– conversion time up to 10 μs or 100 ksamples/s

EL4732:
– 2-channel analog output -10 V…+10 V
– time synchronisation across the system through distributed clocks
– jitter << 1 μs
– conversion time up to 10 μs or 100 ksamples/s

EL4712:
– 2-channel analog output 0…20 mA
– time synchronisation across the system through distributed clocks
– jitter << 1 μs
– conversion time up to 10 μs or 100 ksamples/s

Time stamp

EL1252:
– 2-channel digital input 24 V DC
– exact signal acquisition for edge changes
– system accuracy < 1 μs
– absolutely synchronised responses with EL2252

EL2252:
– 2-channel digital output 24 V DC
– exact signal output after time allocation
– system accuracy < 1 μs
– absolutely synchronised responses with EL1252

Synchronised responses can be realised with time stamp input and output terminals;
in the past, precision of < 1 μs was impossible with bus systems. The new
XFC technology replaces hardware wiring.

EtherCAT Box EP1258:
– 8-channel digital input 24 V DC with 2-channel time stamp
– protection class IP 67
– exact signal acquisition for edge changes
– system accuracy < 1 μs

Fast I/O

EL1202:
– 2-channel digital input 24 V DC
– input delay TON/TOFF 1 μs
– minimum response times without appreciable delay

EL2202:
– 2-channel digital output 24 V DC
– output delay TON/TOFF 1 μs

With the EL1202 and EL2202 XFC terminals, delays in the terminal hardware are
reduced down to < 1 μs and therefore become negligible. Input and output data
are for warded with maximum speed.