Siemens SIMATIC S5 IM 306 Interface Module

Description

The 6ES5 306-7LA11 is an IM 306 interface module from Siemens, designed for the robust and widely-used SIMATIC S5 automation platform. This module serves as a crucial link for expanding system capabilities by connecting a central controller (like an S5-115U) to expansion units (EUs), thereby increasing the number of available I/O slots. It is an essential spare part for maintaining the operational integrity of legacy S5 control systems.

Specifications

• Manufacturer: Siemens
• Product Line: SIMATIC S5
• Model: IM 306
• Part Number: 6ES5 306-7LA11
• Function: Interface Module for Expansion Units
• Compatibility: S5-115U, S5-115H, S5-115F
• Hardware Version (E-Stand): 05

Label Info

• Part Number: 1P 6ES5 306-7LA11
• Serial Number: SC-HNH07853
• E-Stand: 05

Application

This module is used in industrial automation environments where SIMATIC S5 systems are still in operation. Its primary application is to enable communication between the main PLC rack and remote or additional I/O racks, which is common in manufacturing, process control, and infrastructure applications.

Country of Origin

Made in Germany.

CO2 Impact

Opting for this refurbished interface module instead of a new system overhaul prevents approximately 40 kg of CO2 emissions. This saving is comparable to charging over 4800 smartphones.

Availability

This product is an obsolete but available spare part. Stock is limited. Order now from PLC2Day for expert support and fast delivery.

FAQ

Question?
What is the maximum distance this IM 306 module can support between the central controller and an expansion unit?

The IM 306 (6ES5 306-7LA11) can typically bridge a distance of up to 3 meters using the standard Siemens connection cable (e.g., 6ES5 714-1SF00).

No, the IM 306 is specifically designed for use with the S5-115U, S5-115H, and S5-115F central controllers. It is not compatible with other S5 series like the S5-95U or S5-135U/155U, which use different interface modules.

The 'E-Stand' or 'Ausgabestand' indicates the hardware revision of the module. Version 05 is a specific iteration. It is crucial to match the E-Stand when replacing a faulty module to ensure full compatibility with your existing system and software configuration.

PLC2DAY is not an authorized distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners.

Last Update: Friday, March 13, 2026