Beckhoff EL1712-0020 | EtherCAT Terminal, 2-channel digital input, 120 V DC, 3 ms

Special features:

• suitable for simple counting tasks with counting frequencies up to 1 kHz,

e.g., the connection of a flow meter

• one up and down counter or two separate up or down counters

The EL1512 EtherCAT Terminal is an up/down counter and transmits

the counter value in an electrically isolated form to the higher level

automation device. When used as a single-channel up/down counter

(32-bit), the pulse is set via the clock input; the counting direction is

specified via the U/D input. Furthermore, the input can also be used

as a gate input for triggering the counter. In 2 counter mode, two

separate counters are available (Clock and Clock1 inputs), which can

be parameterized as up or down counters.

The signal states of the inputs are indicated by light emitting diodes.

The EL1512 is particularly suitable for simple counting tasks such as

the connection of a flow meter.

The 8-channel digital input terminal EL1258-0010 acquires fast binary control

signals from the process level and transmits them, in an electrically isolated

form, to the controller. The EL1258-0010 is the ground switching version of

the EL1258 and offers not only a higher channel density compared to the

EL1252. but also higher performance due to the multi-timestamp function.

Whereas the EL1252 can accept one edge change with timestamp per bus

cycle, the EL1258-0010 offers the possibility to register up to 32 events with

timestamps. The EL1258-0010 is synchronized with other EtherCAT devices

through the distributed clocks system, so that events in the whole system

can be measured with a uniform timebase.The EL1252-0050 digital input

terminal acquires the fast binary 5 V control signals from the process level

and transmits them, in an electrically isolated form, to the controller.

The EtherCAT Terminal has two 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.

With this XFC technology, signal characteristics can be traced exactly

in time and correlated with the distributed clocks system-wide. With this

technology, machine-wide parallel hardware wiring of digital inputs or encoder

signals for synchronization purposes is often no longer required.

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