Tutto sui PLC: la CPU
A practical engineering guide to PLC CPU operation, from deterministic scan cycles and I/O image tables to memory, communications, diagnostics, redundancy, processor sizing, and reliable system...
Designed for decentralized automation tasks in rugged environments, the EPP1816-0008 EtherCAT P Box acquires binary control signals from the physical process level and transmits them with high speed and synchronization to the control system. The unit is equipped with 16 digital inputs configured in a highly dense arrangement, accessible via a standard 25-pin D-sub interface.
Operating as an EtherCAT P device, this module integrates both ultra-fast EtherCAT communication and power distribution (for both system/sensor supply Us and peripheral voltage Up) into a single, specialized cable. The inputs conform to the EN 61131-2 Type 1 and Type 3 electronic standards, ensuring broad compatibility with 2-wire and 3-wire proximity sensors, limit switches, and photoelectric sensors. Built-in Distributed Clocks functionality guarantees precise latching of input states relative to the master system time.
| Parameter | Specification |
|---|---|
| Manufacturer | Beckhoff |
| Part Number / Model | EPP1816-0008 |
| Protocol | EtherCAT P |
| Bus Interface | 2 x M8 socket, shielded, screw type, P-coded |
| Number of Inputs | 16 |
| Input Connection | D-sub socket, 25-pin, UNC4-40 |
| Nominal Input Voltage | 24 V DC (-15% / +20%) |
| Input Filter | 10 us (microseconds) |
| "0" Signal Voltage | -3 to +5 V (conforming to EN 61131-2, type 3) |
| "1" Signal Voltage | 11 to 30 V (conforming to EN 61131-2, type 3) |
| Input Current | Typically 3 mA (conforming to EN 61131-2, type 3) |
| Distributed Clocks | Yes |
| Sensor Supply | From Us control voltage, max. 0.5 A total, short-circuit proof |
| Current Consumption from Us | Typically 100 mA |
| Electrical Isolation | 500 V |
| Weight | Approx. 165 g |
| Operating Temperature | -25 to +60 degC |
| Storage Temperature | -40 to +85 degC |
| 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 |
| Protection Rating | IP65 / IP66 / IP67 (conforms to EN 60529) |
| Installation Position | Variable |
| Connector | Interface Type | Function |
|---|---|---|
| EtherCAT P Input | M8, 4-pin socket, P-coded | EtherCAT P incoming communication and power feed (Us, Up) |
| EtherCAT P Output | M8, 4-pin socket, P-coded | EtherCAT P downstream communication and power forwarding |
| Digital Inputs | 25-pin D-sub socket (UNC4-40 thread) | 16-channel input terminals, including sensor supply and GND |
Global Express Shipping
Returns & Warranty

Designed for decentralized automation tasks in rugged environments, the EPP1816-0008 EtherCAT P Box acquires binary control signals from the physical process level and transmits them with high speed and synchronization to the control system. The unit is equipped with 16 digital inputs configured in a highly dense arrangement, accessible via a standard 25-pin D-sub interface.
Operating as an EtherCAT P device, this module integrates both ultra-fast EtherCAT communication and power distribution (for both system/sensor supply Us and peripheral voltage Up) into a single, specialized cable. The inputs conform to the EN 61131-2 Type 1 and Type 3 electronic standards, ensuring broad compatibility with 2-wire and 3-wire proximity sensors, limit switches, and photoelectric sensors. Built-in Distributed Clocks functionality guarantees precise latching of input states relative to the master system time.
| Parameter | Specification |
|---|---|
| Manufacturer | Beckhoff |
| Part Number / Model | EPP1816-0008 |
| Protocol | EtherCAT P |
| Bus Interface | 2 x M8 socket, shielded, screw type, P-coded |
| Number of Inputs | 16 |
| Input Connection | D-sub socket, 25-pin, UNC4-40 |
| Nominal Input Voltage | 24 V DC (-15% / +20%) |
| Input Filter | 10 us (microseconds) |
| "0" Signal Voltage | -3 to +5 V (conforming to EN 61131-2, type 3) |
| "1" Signal Voltage | 11 to 30 V (conforming to EN 61131-2, type 3) |
| Input Current | Typically 3 mA (conforming to EN 61131-2, type 3) |
| Distributed Clocks | Yes |
| Sensor Supply | From Us control voltage, max. 0.5 A total, short-circuit proof |
| Current Consumption from Us | Typically 100 mA |
| Electrical Isolation | 500 V |
| Weight | Approx. 165 g |
| Operating Temperature | -25 to +60 degC |
| Storage Temperature | -40 to +85 degC |
| 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 |
| Protection Rating | IP65 / IP66 / IP67 (conforms to EN 60529) |
| Installation Position | Variable |
| Connector | Interface Type | Function |
|---|---|---|
| EtherCAT P Input | M8, 4-pin socket, P-coded | EtherCAT P incoming communication and power feed (Us, Up) |
| EtherCAT P Output | M8, 4-pin socket, P-coded | EtherCAT P downstream communication and power forwarding |
| Digital Inputs | 25-pin D-sub socket (UNC4-40 thread) | 16-channel input terminals, including sensor supply and GND |
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
Germany
|