Description
DI 420 — Digital Input Module
Siemens · DI 420 · 6ES5420-7LA11
Description
The DI 420 (6ES5420-7LA11) is a non-isolated (non-floating) digital input module for the SIMATIC S5-115U programmable controller, providing 32 digital inputs at 24V DC for connecting field sensors and switches.
Key specifications
Parameter | Value |
Function | Digital input module for S5-115U |
Channels | 32 digital inputs |
Input voltage | 24 V DC |
Isolation | Non-isolated (non-floating), common ground |
Mounting/Rack | S5-115U central or expansion rack slot |
Reference
Field | Value |
Manufacturer (OEM) | Siemens |
Model | DI 420 |
Part number | 6ES5420-7LA11 |
Category | Digital I/O |
System family | SIMATIC S5-115U |
Stores quantity | 16 |
Data confidence | high |
Manuals filed (007 - Manuals)
- Manual CP1430 English Vol1.pdf — S5-115U system reference (CP/comms volume)
- 02 - CPU948 Programming Manual.pdf — S5 CPU programming reference (115U/155H family)
Notes
Verified via elettronicalucense.com, 6es7.pl (Polrad), and Siemens interface adapter documentation confirming DI 420 = 32x24VDC non-isolated input module for S5-115U.
Source: Spare Parts List for Sales V7 (Bohemia Market / BM Global stores inventory). Filed in the AI HW Knowledge Base.