Beckhoff: EJ1254 – EtherCAT Plug-in Module, 4-Channel Digital Input, 24 V DC, 1 µs, Timestamping
The EJ1254 digital input module acquires the fast binary 24 V control signals from the process level and transmits them, in an electrically isolated form, to the controller. The EtherCAT plug-in module has four channels that indicate their signal state via light emitting diodes. The signals are furnished with a time stamp that identifies the time of the last edge change with a resolution of 1 ns.