EL1252, EL1252-0010, EL1252-0050, EL1254 - Introduction
2-/4-channel digital input terminal with time stamp
The EL1252 and EL1254 digital input terminals acquire the fast binary control signals from the process level and transmits them, in an electrically isolated form, to the controller. The signals are furnished with a time stamp that identifies the time of the last edge change with a resolution of 1 ns. This technology enables signals to be traced exactly over time and synchronized with the distributed clocks across the system. With this technology, machine-wide parallel hardware wiring of digital inputs or encoder signals for synchronization purposes is often no longer required. In conjunction with the EL2252 EtherCAT Terminal (digital output terminal with time stamp), the EL1252/EL1254 enables responses with equidistant time intervals, largely independent of the bus cycle time.
The EL1252-0010 variant is featured with a 10 ns (typ.) input filter.
A variant with 5 V input voltage (TTL level) is available with the EL1252-0050..