Up/down counter 24 V DC, 100 kHz EL1502
Out LED 2
Clock LED
Out LED1 
Signal LED 
Power contact
+24 V
Power contact 0 V
V/R Clock1 Gate
Output 1
Clock
+24 V
0 V
Output 2
Top view 
Contact assembly 
extended temperature range
extended shock and vibration range

EL1502 | Up/down counter 24 V DC, 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. In the EL1502 EtherCAT Terminal it is possible to choose the (32 bits) counting direction using the up/down input, the gate connection can be used to control the triggering. Using the Clock1 input it is possible to implement two (32 bits) counters. The EtherCAT Terminal contains two inputs that indicate their signal state via LEDs. Both outputs are switched according to the counter state, so that they can be used as fast control signals for field devices.

The EL1502 device supports the distributed clocks function. This means that the counter can be read at constant intervals (DC precision << 1 µs).

Technical data EL1502 | ES1502
Connection technology 1 x up/down counter, 2 x up or down counter
Specification EN 61131-2, type 1, “0”: < 5 V DC, “1”: > 15 V DC, typ. 5 mA
Number of counters 1 or 2
Nominal voltage 24 V DC (-15 %/+20 %)
“0“ signal voltage -3…+5 V
“1“ signal voltage 15…30 V
Input current typ. 5 mA
Counting frequency max. 100 kHz
Distributed clocks yes
Max. output current 24 V/0.5 A (short-circuit-proof) per channel
Current consumption power contacts typ. 14 mA + load
Current consumption E-bus typ. 130 mA
Counter depth 32 bit
Electrical isolation 500 V (E-bus/field potential)
Bit width in the process image 48 bit counter input, 48 bit counter output
Configuration no address setting, configuration via the EtherCAT master
Special features set counters, switch outputs
Weight approx. 50 g
Operating/storage temperature -25…+60 °C/-40…+85 °C
Relative humidity 95 %, no condensation
Vibration/shock resistance conforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emission conforms to EN 61000-6-2/EN 61000-6-4
Protect. class/installation pos. IP 20/variable
Pluggable wiring for all ESxxxx terminals
Approvals CE, UL, Ex