EP2338-2002

There are two channels on each M12 socket. Each channel can be operated individually as a digital input or as a digital output.

All channels are functionally identical, but are connected in groups to different potentials that are electrically isolated from each other:

The channels at X01 and X02 are at U_S/GND_S potential.
Sensors, input drivers and output drivers are supplied from U_S.
The channels at X03 and X04 are at U_P/GND_P potential.
Sensors, input drivers and output drivers are supplied from U_P.

The following figures show connection examples and pin assignments for the two groups.

X01/X02 as digital input

X01/X02 as digital output

Notice

Digital outputs active despite shutdown of U_P (X01, X02)

The digital inputs/outputs of EtherCAT Box modules are usually supplied from U_P. This enables the collective shutdown of all outputs by switching U_P off.

The digital outputs at X01 and X02 of the EP2338-2002 are supplied from U_S. They therefore remain active even if U_P is switched off externally.

X03/X04 as digital input

Notice

Digital inputs without function if U_P is missing (X03, X04)

The digital inputs of EtherCAT Box modules are usually supplied from U_S.
The digital inputs at X03 and X04 of the EP2338-2002 are supplied from U_P.

If the supply voltage U_P is missing, a constant low-level of the digital inputs at X03 and X04 is displayed in the process data, even if a high level is present.

X03/X04 as digital output