WAGO 750-881 – Ethernet Controller (3rd Generation) Overview The WAGO 750-881 is a programmable Ethernet controller that connects standard Ethernet networks to the WAGO I/O System. It supports EtherNet/IP and Modbus TCP/UDP, includes an integrated switch with two RJ-45 interfaces, and automatically builds a process image of all attached I/O modules. Programming is IEC-61131-3-compliant. The device includes diagnostic LEDs and supports both system-side and field-side power via jumper contacts. Key Features Supports EtherNet/IP, Modbus TCP/UDP, and standard Ethernet protocols (HTTP, DHCP, DNS, SNTP, SNMP, FTP) Dual RJ-45 Ethernet ports with integrated switch (Auto-Negotiation, Auto-MDI(X)) IEC-61131-3 programming languages (IL, LD, FBD, ST, SFC, CFC) Integrated Web server for configuration and status monitoring Capacity for up to 64 I/O modules (up to 250 with bus extension) Large process images: 1020 words input / 1020 words output 32-bit CPU, multitasking, with battery-backed real time clock Technical Specifications Part Number: 750-881 Communication Protocols: EtherNet/IP, Modbus TCP & UDP Ethernet Speed: 10/100 Mbit/s Transmission Medium: Twisted pair, Cat 5 or better, 100 Ω Max I/O Modules (without extension): 64 Max I/O Modules (with bus extension): 250 Max Process Image: 1020 words in / 1020 words out Program Memory: 1,024 KB Data Memory (RAM): 512 KB Retain Memory (non-volatile): 32 KB System Power Supply: 24 VDC (-25% … +30%) Nominal Input Current at 24 V: ~500 mA Efficiency (at nominal load): ~90% System Supply (5 V side) Current: ~450 mA Total Current for System Supply (for I/O modules): 1,700 mA Field Supply Voltage: 24 VDC via power jumper contacts Power Jumper Contacts Capacity: 10 A Number of Outgoing Power Jumper Contacts: 3 Isolation Voltage (System vs Field): 500 V Connection Type: - Communication: 2 × RJ-45 - System Supply: 2 × CAGE-CLAMP® - Field Supply: 6 × CAGE-CLAMP® Conductor Size (solid/stranded): 0.08 … 2.5 mm² (AWG 28 … 14) Wire Strip Length: 8 … 9 mm Dimensions (W × H × D): ~61.5 × 65 × 100 mm Height from top edge of DIN-rail: ~64.7 mm Weight: ~159 g Operating Temperature: 0 … +55 °C Storage Temperature: -25 … +85 °C Protection Rating: IP20 Pollution Degree: 2 Applications Programmable fieldbus controller in industrial Ethernet setups Integration of mixed I/O (digital, analog) modules in automation systems Where protocol support for EtherNet/IP and Modbus is required Systems needing large I/O images and high module counts Why Choose the WAGO 750-881 Dual Ethernet ports with built-in switching reduce external hardware Strong protocol flexibility (EtherNet/IP, Modbus, etc.) for various automation networks Robust performance with large memory and support for many modules Reliable isolation, good efficiency, and compact footprint Order Now The WAGO 750-881 is part of the WAGO I/O System 750 controller family. Available for purchase. Ships worldwide.
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