Introduction
Up/down counter 24 VDC, 100 kHz
The up/down counter counts binary pulses, and transmits the counter state, in an electrically isolated form, to the higher-level automation device.
The EL1502 EtherCAT Terminal can alternatively be operated as:
- a single-channel counter (32 bit) that can be toggled between counting up and down via the U/D input (delivery state)
- a single-channel counter (32 bit) that is controlled via the gate connection
- two separate logic counters (32 bit) that can count in one direction only with the Clock 1 and Clock 2 inputs
The signal state of the inputs and outputs is indicated by light emitting diodes.
The two outputs (Output 1 and Output 2) are switched in relation to the counter value and can thus be used as fast control signals for field devices.
The EL1502 supports distributed clocks, i.e. the input data can be monitored synchronously with other data that are also linked to distributed clock terminals. The accuracy across the system is < 100 ns.