Features:
- 32 high-density digital input channels configured for 24 V DC process signal monitoring.
- Direct non-isolated signal paths enabling high-speed binary input updating to the PLC.
- Front-panel LED status displays for quick real-time channel activity inspection.
This unit is supplied as an authentic Siemens 6ES5420-7LA11 digital input module in original new-surplus or fully tested refurbished condition, delivered ready for immediate system installation.
The module functions as a primary binary interface, gathering field signal transitions from limit switches and sensors and transferring them straight into the controller memory.
Installation requires one available slot in a SIMATIC S5-115U subrack together with a 46-pin front connector, secured with top and bottom retaining screws.
The Siemens 6ES5420-7LA11 is a legacy product fully supported with genuine quality inspection by the manufacturer (OEM).
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Monitors binary position switches and sensor states across automated manufacturing lines.
- Collects field feedback from pressure switches and valve limit contacts in process plants.
- Interconnects safety interlocks and control pushbuttons within central PLC enclosures.
- Designed for native plug-and-play operation inside SIMATIC S5-115U, S5-115H, and S5-115F subracks.
- Supported in S5-135U and S5-155U programmable controller chassis when fitted with adapter casings.
- Operates reliably within central controllers or connected expansion racks using standard interface modules.
- Operates continuously at full 100% load factor across ambient cabinet temperatures up to 55 °C.
- Built to meet VDE 0160 industrial standards for electrical clearance and insulation reliability.
- Designed with high electromagnetic interference immunity for harsh plant automation environments.
- Maps 32 input channels to 4 contiguous bytes within the central controller Process Image Input (PII) table.
- Fully supported by STEP 5 programming tools for standard cyclic address referencing and logic polling.
- Requires zero software parameterization or jumper setup prior to program execution in the CPU.