WAGO 750-891

WAGO 750-891 – Controller Modbus TCP, 4th Generation, 2× Ethernet

Overview

The WAGO 750-891 is a powerful programmable controller in the WAGO I/O System 750 series. Designed for Ethernet (Modbus TCP / UDP) networks, it features dual RJ-45 Ethernet ports, supports IEC-61131-3 programming languages (LD, FBD, ST, CFC, IL, SFC), includes a real-time operating system, and complies with hazardous area and marine approvals. Built for demanding industrial applications requiring precision, resilience, and strong communication capabilities.

Key Features

• Supports Modbus TCP and UDP communication

• Dual Ethernet interfaces with RJ-45 connectors

• IEC-61131-3 programming: Ladder Diagram, Function Block Diagram, Structured Text, Instruction List, Sequential Function Chart, Continuous Function Chart

• Real-time operating system with multitasking and capacitor-backed real time clock

• Supports DHCP, BootP, DNS, SNTP, HTTP(S), FTP(S), SNMP, Web Visualization

• Hazardous-area and marine approvals (ATEX, IECEx, UL, etc.)

• Large system supply current for I/O expansion and robust performance

Technical Specifications

Part Number: 750-891
Controller Type: Programmable Controller (PFC) Modbus TCP, 4th Generation
Number of Ethernet Ports: 2 × RJ-45
Communication Protocols: Modbus TCP, Modbus UDP; also HTTP(S), BootP, DHCP, DNS, SNTP, FTP(S), SNMP
Programming Languages: IEC-61131-3 (LD, FBD, ST, IL, SFC, CFC)
Operating System: Real-time OS with multitasking; capacitor-backed RTC
System Supply Voltage: 24 VDC
Current Consumption (System Supply, 5 V Side): approx. 390 mA
Total Current for System Supply (all internal supply): approx. 1,700 mA
Operating Temperature: 0 °C … +55 °C
Storage Temperature: −40 °C … +85 °C
Protection Rating: IP20
Degree of Pollution: 2 (IEC 61131-2)
Mounting Style: DIN-Rail mount, any mounting position
Dimensions (W × H × D): approx. 61.5 × 100 × 71.9 mm
Relative Humidity: up to 95 % non-condensing
Altitudes Supported: 0 … 2000 m without derating; up to 5000 m with temperature derating

Applications

• Industrial automation requiring a controller capable of handling tasks over Ethernet networks

• Process control or factory floor environments where hazardous area certification may be required

• Systems needing mixed I/O modules under a central Modbus TCP master/slave configuration

• Remote monitoring and management using web visualization and network services

Why Choose the WAGO 750-891

• Powerful dual-Ethernet connectivity for redundancy or segmented networks

• Full IEC-61131-3 support plus broad communication protocol options

• Real-time OS and capacitor-backed RTC ensure reliability for time-sensitive tasks

• Hazardous-area and marine certifications extend usability into tough environments

• Strong power budget and robust design allow large I/O node assemblies

Order Now

The WAGO 750-891 is part of the WAGO I/O System 750 product line and is available for purchase. Ships worldwide.

NEW product in original sealed packaging. The product may be of older version or design. The packaging may have markings, signs of discoloration, and wear. DDPARTSSOLUTION Warranty: 1 Year. Manufacturer's Warranty and Support NEVER apply