WAGO 750-370 Fieldbus Coupler

WAGO 750-370 is a PROFINET IO Fieldbus Coupler for the WAGO 750 Series I/O System. This model is a 2nd generation (Gen.2) product and is currently discontinued. The official direct replacement is the 3rd generation model 750-377.

1. Funciones principales & Objetivo

Product type: PROFINET IO slave coupler

Función central: Acts as a gateway to connect WAGO 750 Series I/O modules to a PROFINET IO industrial Ethernet network

Network interface: Integrated 2-port 10/100 Mbps Ethernet switch (2× RJ45), supports wire-speed forwarding and auto-negotiation

System bus: Connects up to 64 WAGO 750 I/O modules via the internal K-Bus

Configuration methods: DIP switches, DCP protocol, Web-Based Management (WBM)

2. Parámetros técnicos clave

3. Model Code Meaning (750-370)

750: Serie de productos (WAGO-I/O-SYSTEM 750)

3: Fieldbus type (3 = PROFINET)

70: Specific model identifier (2nd generation, 2 ports)

4. Modelo de reemplazo (Official Recommendation)

750-370 ➡️ 750-377

750-377: 3rd generation (Gen.3) PROFINET coupler, Eco Advanced version

Totalmente compatible: Direct replacement for 750-370, identical hardware, software and wiring

Performance improvements: Supports S2 system redundancy, faster response time, menor consumo de energía

Same width: 51 milímetros, can be installed directly in the original rail position

Other alternatives in the same series:

750-375: 3rd generation Basic version, similar functions to 750-377 with some simplified features

750-362: Modbus TCP coupler (if changing the fieldbus protocol)

5. Aplicaciones típicas

Distributed I/O systems for factory automation

Data acquisition and control between field level and control level (SOCIEDAD ANÓNIMA)

PROFINET networks with mainstream PLCs such as Siemens, Rockwell, Beckhoff, etc..

Industrial sites requiring high real-time performance and long-distance communication

WAGO 750 Series Model List

The WAGO 750 Series is a modular, distributed I/O system with IP20 protection and DIN rail mounting, supporting all major fieldbus protocols. Below is a complete model list organized into five categories: fieldbus couplers, digital I/O, analog I/O, function modules, fuerza & auxiliary modules (including common/mainstream models).

1. Fieldbus Couplers (Head Station)

Responsible for communication with upper-level PLC/controller and connecting 750 Series I/O modules.

1.1 PROFINET (Común)

750-370: 2nd generation, 2 ports, discontinued (replacement: 750-377)

750-377: 3rd generation, Eco Advanced, 2 ports, direct replacement for 750-370

750-375: 3rd generation, Versión básica

750-373: 3rd generation, Extreme version (-40°C ~ +70°C)

1.2 Modbus TCP / EtherNet/IP

750-362: Modbus TCP, 4th generation

750-363: EtherNet/IP, 4th generation

1.3 PROFIBUS-DP

750-303: 1st generation, 12 MBd

750-333: 2nd generation, 12 MBd

1.4 Other Fieldbuses

750-312: Modbus RTU (RS-485)

750-337: CANopen

750-346: DispositivoNet

2. Digital Input Modules (DE, Amarillo)

2.1 Standard 24V DC

750-402: 4 canales, 24En DC, non-isolated

750-408: 8 canales, 24En DC, non-isolated

750-410: 16 canales, 24En DC, non-isolated

750-415: 8 canales, 24En DC, with diagnostics

750-417: 8 canales, 24En DC, isolated

2.2 Special / Explosion-Proof

750-438: 2 canales, NAMUR Ex i (intrinsically safe)

750-439: 8 canales, NAMUR Ex i (with wire-break diagnostics)

3. Digital Output Modules (HACER, Rojo)

3.1 Standard 24V DC

750-504: 4 canales, 24En DC, 0.5A

750-517: 2 canales, salida de relé, 250V AC/30V DC, 2A

750-523: 4 canales, 24En DC, 2A, with diagnostics

750-527: 4 canales, solid-state relay (SSR), 30VCA/CC, 2A

3.2 High Voltage / Alta corriente

750-530: 2 canales, 230V y, 0.5A

750-547: 1 canal, 440V y, 16A, high-current relay

4. Analog Input Modules (AI, Verde)

4.1 Standard Current / Voltaje

750-450: 4 canales, 0–10V / ±10V

750-451: 8 canales, 0–10V / ±10V

750-455: 4 canales, 0/4–20mA

750-459: 4 canales, 0–10V, single-ended

4.2 Temperatura (RTD/TC)

750-460: 4 canales, RTD (Pt100/Ni1000)

750-461: 2 canales, RTD (Pt100), high precision

750-469: 2 canales, thermocouple (TC)

4.3 Special Signals

750-476: 2 canales, ±10V, 60Hz

750-484: 2 canales, resistance bridge / strain gauge

5. Analog Output Modules (HACIA, Blue)

750-550: 2 canales, 0–10V / ±10V

750-552: 2 canales, 0/4–20mA

750-553: 4 canales, 0/4–20mA

750-555: 4 canales, 0–10V

6. Función & Special Modules

Counter / Encoder

750-613: 2 canales, 500kHz counter

750-614: 1 canal, SSI absolute encoder

Comunicación

750-628: RS-232/RS-485 interface

750-652: IO-Link Master (4 ports)

Control

750-630: proportional valve controller

750-640: RTC real-time clock module

7. Fuerza & Auxiliary Modules

7.1 Power Modules

750-600: System power supply, 24En DC

750-602: System + field power supply, 24En DC, with diagnostics

750-606: Ex i intrinsically safe power module

7.2 Auxiliar / End Modules

750-601: Potential distribution module (separates voltage potentials)

750-616: Spacer module (increases creepage distance in hazardous areas)

750-975: End module (termination)

Guía de selección rápida (Core Models)

PROFINET head station: First choice 750-377 (replaces 370)

Standard DI/DO: 8-channel commonly used 750-408 (DE) / 750-523 (HACER)

Standard AI/AO: 4-channel commonly used 750-455 (AI 4–20mA) / 750-553 (AO 4–20mA)

Temperature measurement: 750-460 for Pt100, 750-469 for thermocouples

Differences Between WAGO 750-370 y 750-377

The core differences between WAGO 750-370 y 750-377 lie in generation, redundancy support, diagnostic capability and power consumption. El 750-377 is a 3rd generation Eco Advanced version and the official direct replacement for the 750-370. It is mechanically compatible with DIN rail mounting and can be replaced directly.

Core Comparison Table

Detailed Key Differences

1. Redundancy & Fiabilidad (Core Upgrade)

El 750-377 supports S2 system redundancy, allowing connection to two PROFINET controllers with automatic switchover if the primary controller fails, greatly improving system availability; el 750-370 does not support this function.

2. Diagnostics & Mantenimiento

El 750-377 features enhanced Web-Based Management (WBM), supporting topology detection, SNMP monitoring and detailed status information for more efficient network and I/O troubleshooting; el 750-370 only provides basic diagnostics.

3. Dimensiones físicas & Layout

El 750-377 has a reduced width of 49.5 milímetros (aprox. 1.5 mm narrower than the 750-370) and lower weight (aprox. 107 g vs. 200 gramo), saving DIN rail space. Both are electrically compatible and can be replaced directly.

4. Discontinuation & Reemplazo

El 750-370 is discontinued, with the 750-377 as the only official direct replacement. Other 3rd generation options include the 750-375 (Versión básica, simplified functions) y 750-373 (Extreme version, wide temperature range -40…+70 °C).

Recomendaciones de reemplazo

Preferred replacement: Choose 750-377 for redundancy and enhanced diagnostics, suitable for new systems and long-term operation.

Budget-sensitive / no redundancy needed: Choose 750-375 (Versión básica), similar functions to 377 with simplified features.

Extreme environments: Choose 750-373 (Extreme version) for -40…+70 °C wide temperature operation.

Both models share identical core electrical parameters and data capacity with low replacement cost. The main improvements of the 750-377 are the addition of S2 redundancy, enhanced diagnostics and a more compact physical design, making it the upgraded replacement for the 750-370.

Cross-Brand Model Comparison for WAGO 750-370

The WAGO 750-370 is a 2nd-generation PROFINET coupler and has been discontinued. Its official direct replacement is the 750-377. Below is a list of functionally equivalent and replaceable models sorted by brand/series, focusing on core matching features including PROFINET interface, 2-port switch, 24V DC power supply, and DIN rail mounting for easy replacement and project migration.

Core Comparison Table

Detailed Cross-Brand Comparison

1. siemens

Modelo recomendado: 6ES7155-6AU01-0CN0 (ET 200SP IM 155-6 PN High Performance)

Protocol: PROFINET IO RT/IRT, compatible with Class B

Interface: 2×RJ45, 100Mbps switch

Fuente de alimentación: 24En DC

Compatibilidad: Highly consistent in function with the 750-370, suitable for Siemens S7-1200/1500 controllers

Notas de reemplazo: Must be configured as ET 200SP in TIA Portal; process data size (320B in / 320B out) matches the 750-370.

2. Phoenix Contact

Modelo recomendado: AXL F BK PN (Número de pedido. 2701815)

Protocol: PROFINET IO RT Class C, high real-time performance

Interface: 2×RJ45, 100Mbps wire-speed forwarding

máx.. devices: 63 unidades, close to the 64-module capacity of the WAGO 750 serie

Compatibilidad: Protección IP20, Montaje en carril DIN, 24V DC power supply, highly compatible in physical and electrical parameters

Notas de reemplazo: Configurable in third-party PLCs via GSDML files; supports topology detection and SNMP diagnostics, with better operation and maintenance capabilities than the 750-370.

3. Electricidad Schneider

Modelo recomendado: BMXFCW3000 (Modicon M340 Ethernet module)

Protocol: Supports PROFINET IO and Modicon bus

Interface: 2×RJ45, industrial Ethernet

Compatibilidad: Suitable for M340 series, 24V DC power supply, Montaje en carril DIN

Notas de reemplazo: Requires configuration via Schneider SoMachine software; strong protocol compatibility but no S2 redundancy function.

4. Beckhoff

Modelo recomendado: EL6631-0010 (PROFINET IO terminal module)

Protocol: PROFINET IO RT Class B

Interface: Integrated in EtherCAT terminals, 2-port switch

Compatibilidad: Consistent protocol with the 750-370, supports up to 64 module expansions

Notas de reemplazo: Suitable for Beckhoff CX series PLCs, configured via TwinCAT; strong real-time performance and diagnostic capabilities.

5. Rockwell Automation

Modelo recomendado: 1756-ENBT (ControlLogix Ethernet module)

Protocol: EtherNet/IP, requires gateway conversion to PROFINET

Compatibilidad: Supports 8-module expansion, industrial-grade reliability

Notas de reemplazo: Requires an additional PROFINET gateway (p.ej., 1756-PN2) for protocol interoperability; suitable for migration within Rockwell systems.

6. Domestic Alternative (Cost-Effective)

Innovación: AM600-PN

Protocol: PROFINET IO RT Class B

Interface: 2×RJ45, 100mbps

Compatibilidad: 64-module expansion, 24V DC power supply, Montaje en carril DIN

Ventajas: Lower cost than imported brands, compatible with mainstream PLCs such as Siemens and Beckhoff, ideal for cost-sensitive projects.

Selection and Replacement Recommendations

1. First-choice replacement: Select the WAGO 750-377 — official direct replacement, fully compatible in dimensions (51mm de ancho), wiring and software, with S2 redundancy and enhanced diagnostics.
2. Siemens systems: Use the 6ES7155-6AU01-0CN0 for easy configuration and seamless connection with S7-1200/1500.
3. Phoenix Contact systems: Use the AXL F BK PN for high real-time performance and rich diagnostics, ideal for applications requiring high network stability.
4. Proyectos sensibles a los costos: Choose the Inovance AM600-PN, with performance close to imported models at a better price, suitable for domestic substitution projects.

Consistent protocol: Prioritize PROFINET IO models to avoid latency and failures caused by protocol conversion.

Interface compatibility: Must retain a 2×RJ45 industrial Ethernet switch supporting wire-speed forwarding and auto-negotiation.

Power and mounting: 24V DC power supply, DIN 35mm rail mounting, IP20 protection to ensure physical replacement without hardware modification.

Expansion capacity: Support up to 64 I/O modules to meet the original configuration requirements of the 750-370.