Description
DI 431 — Digital Input Module
Siemens · DI 431 · 6ES5431-8MA11
Description
The DI 431 (6ES5431-8MA11) is a floating (isolated) digital input module for the SIMATIC S5-90U/95U/100U, ET 100U, and ET 200U systems, providing 8 digital inputs at 24V DC.
Key specifications
Parameter | Value |
Function | Digital input module for S5-90U/95U/100U, ET100U, ET200U |
Channels | 8 digital inputs |
Input voltage | 24 V DC |
Isolation | Floating (isolated) |
Weight | ~140 g |
Reference
Field | Value |
Manufacturer (OEM) | Siemens |
Model | DI 431 |
Part number | 6ES5431-8MA11 |
Category | Digital I/O |
System family | SIMATIC S5-90U/95U/100U |
Stores quantity | 43 |
Data confidence | high |
Manuals filed (007 - Manuals)
- Manual STEP5 S5-100U English.PDF — S5-100U system manual (English) covering CPU/IO/memory for the 100U programmable controller
Notes
Verified via endustrimagaza.com, generiselectronics.com, and unisgroup.com.mx listings confirming DI 431 = 8x24VDC isolated input module used with CPU100 (6ES5100-8MA02) systems.
Source: Spare Parts List for Sales V7 (Bohemia Market / BM Global stores inventory). Filed in the AI HW Knowledge Base.