Analog input
EPP3744-1041 | Pressure measuring box, 6 digital inputs 24 V DC, 2 digital outputs 24 V DC, 0.5 A, 4 pressure inputs 0…7 bar
M8 I/O
connection sockets 
Signal status display
6-mm fitting
1 | +24 V DC Us
2 | Input
3 | GND
4 | Input
1 | +24 V DC Us
2 | Output
3 | GNDs
4 | Input
1 | TX+/GNDS
2 | Rx+/GNDP
3 | Rx-/UP
4 | Tx-/US
EtherCAT P
signal input 
EtherCAT P
signal output 
Socket 2 and 3
Socket 0 and 1
Power supply
status display:
Box supply (US
Auxiliary voltage (UP
extended temperature range

EPP3744-1041 | Pressure measuring box, 6 digital inputs 24 V DC, 2 digital outputs 24 V DC, 0.5 A, 4 pressure inputs 0…7 bar

The EPP3744-1041 EtherCAT P Box, equipped with six digital inputs, two digital outputs and four pressure inputs, acquires these signals and transmits them – electrically isolated – to the controller. The signal status is indicated by LEDs; the digital signals are connected via 4-pin M8 plug connectors.

The pressure is measured as the differential pressure to the fifth connection by an integrated 6 mm fitting. The pressure values are available as 16-bit values. Measurement can be made between -7…7 bar, with the value being output in relation to the fifth connection, e.g. for vacuum measurement in relation to the ambient pressure at suction grippers. In absolute-pressure mode it is possible to measure pressures between 0…7 bar.

The operating mode is preselected via CoE parameters. If the supply voltages fall below a certain level (< 18.5 V) a diagnostic bit is set.

Technical data EPP3744-1041
Number of channels 6 digital inputs, 2 digital outputs, 4 pressure inputs
Number of inputs 4 x pressure, 6 x digital
Connection method digital signals: 4-pin M8; pressure measurement: 6 mm fitting
Protocol EtherCAT
Bus interface 2 x M8 socket, shielded, screw type, EtherCAT-P-coded
Signal type air pressure
Measuring range 0…7 bar (0…100 psi)/
-7…7 bar (-100…100 psi)
Resolution 1 mbar per digit
Measuring error 3 %
Conversion time ~ 3.5 ms
Nominal voltage 24 V DC (-15 %/+20 %)
Distributed clocks yes
Input filter 10 µs (for digital inputs)
Specification EN 61131-2, type 1/3
Max. output current 0.5 A per channel, individually short-circuit proof
Load type ohmic, inductive, lamp load
Short circuit current typ. 1.5 A
Sensor supply from load supply voltage, max. 0.5 A, short-circuit proof in total
Power supply connection not necessary
Electrical isolation 500 V
Special features direct pressure measuring at the machine
Operating/storage temperature -25…+60 °C/-40…+85 °C
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 65/66/67 (conforms to EN 60529)/variable
ZK700x-010x-0xxx Cables for EtherCAT P: Ultra-fast Communication and Power in One Cable
ZK2000-xxxx-xxxx Cables for M8 I/O connection sockets
ZK2000-5xxx/71xx-xxxx Sensor cable 5-wire unshielded/shielded