WAGO 750-1405 WAGO-I/O-SYSTEM 750 Series 16-Channel Digital Input Module

Name: WAGO 750-1405 WAGO-I/O-SYSTEM 750 Series 16-Channel Digital Input Module
Brand: Wago

Model: 750-1405

Brand Wago

Series Pending

Model 750-1405

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Technical Dossier

Product Details And Specifications

WAGO 750 Series Technical Notes

The WAGO-I/O-SYSTEM 750 is a modular fieldbus-independent I/O platform deployed across heavy industrial sectors including petrochemical refineries, nuclear power generation facilities, offshore oil & gas platforms, and large-scale water treatment infrastructure. The 750 Series operates on a proprietary internal bus (WAGO SPEEDWAY) and supports fieldbus protocols including PROFIBUS DP, DeviceNet, CANopen, Modbus TCP, EtherNet/IP, PROFINET, and BACnet/IP — making it one of the most protocol-agnostic I/O platforms in the DCS/PLC market. The 750-1405 is a 16-channel 24 VDC digital input module within this ecosystem, designed for high-density discrete signal acquisition in process automation environments.

The Evolution of 750 Series Architecture

The WAGO 750 Series was introduced in the early 1990s as a DIN-rail-mounted modular I/O system. Its architecture is built around a passive backplane-free design: modules connect directly via a blade-and-socket internal bus, eliminating backplane failure modes common in rack-based systems. Early generations (pre-2000) supported only serial fieldbus protocols (PROFIBUS, CANopen). The mid-2000s expansion introduced Ethernet-based couplers (750-352, 750-342), enabling integration with SCADA systems over standard TCP/IP networks. Post-2010 variants added IEC 61131-3 programmable controllers (750-8xxx series), transforming the platform from a pure I/O concentrator into a standalone PLC. The 750-1405 belongs to the mature I/O module generation — its 16-channel density and 24 VDC compatibility remain the standard for high-density DI applications. Compatibility is maintained across all 750/753 couplers and controllers, though users must verify current consumption budgets when mixing high-density modules on a single node.

WAGO 750 Series Full Catalog & Functionalities (SKU List)

Digital Input Modules

750-400: 2-channel digital input, 24 VDC, standard density
750-401: 2-channel digital input, 24 VDC, with diagnostics
750-402: 4-channel digital input, 24 VDC, standard
750-403: 4-channel digital input, 24 VDC, with diagnostics
750-408: 8-channel digital input, 24 VDC, high density
750-409: 8-channel digital input, 24 VDC, with diagnostics
750-1400: 16-channel digital input, 24 VDC, standard
750-1405: 16-channel digital input, 24 VDC, high-density DI module — current page

Digital Output Modules

750-501: 2-channel digital output, 24 VDC / 0.5 A
750-504: 4-channel digital output, 24 VDC / 0.5 A
750-508: 8-channel digital output, 24 VDC / 0.5 A, high density
750-1504: 16-channel digital output, 24 VDC / 0.5 A, high density

Analog Input Modules

750-452: 2-channel analog input, 4–20 mA, single-ended
750-454: 2-channel analog input, 4–20 mA, differential
750-456: 2-channel analog input, ±10 V
750-461: 2-channel analog input, PT100/RTD
750-469: 2-channel analog input, thermocouple, universal

Analog Output Modules

750-552: 2-channel analog output, 4–20 mA
750-556: 2-channel analog output, ±10 V

Fieldbus Couplers & Controllers

750-352: Ethernet TCP/IP coupler, 10/100 Mbit/s
750-342: DeviceNet coupler, slave
750-303: PROFIBUS DP coupler, slave
750-8202: PFC200 programmable controller, 2x Ethernet, IEC 61131-3
750-8206: PFC200 programmable controller, 2x Ethernet + RS-232/485

Sourcing Hard-to-Find & Obsolete 750 Series Parts

The WAGO 750 Series has been in continuous production since the early 1990s. While WAGO maintains active production for most catalog numbers, certain early-generation couplers (e.g., 750-303, 750-342) and specialized function modules have transitioned to RFQ availability review or end-of-life status. DriveKNMS maintains a dedicated inventory of tested surplus and refurbished 750 Series modules to support installed base maintenance without requiring full system migration. For facilities operating legacy PROFIBUS or DeviceNet nodes, DriveKNMS provides direct replacement sourcing, cross-reference validation, and compatibility verification against the target coupler firmware version. All obsolete module requests are processed with lead-time transparency — no speculative availability claims.

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