SIEMENS 6ES5312-5CA22

Siemens SIMATIC S5 IM 312 Interface Module

Description

The 6ES5312-5CA22 is an IM 312 interface module for the Siemens SIMATIC S5 automation system. This specific module facilitates the connection of an S5-115U expansion unit (EU) to a higher-level central controller (CC) such as the S5-135U, S5-150U, or S5-155U. It is a critical component for expanding the I/O capabilities of existing legacy systems, ensuring reliable communication between racks.

Specifications

• Manufacturer: Siemens
• Product Line: SIMATIC S5
• Model: IM 312 Interface Module
• Part Number: 6ES5312-5CA22
• Function: Connects S5-115U EU to S5-135U/150U/155U CC
• Condition: New Old Stock in original packaging

Label Info

• E-Stand (Version): 01
• Quantity: 1

Application

This module is used in industrial automation applications that require the expansion of a central S5 PLC system with additional I/O racks. It is ideal for machine control, process automation, and manufacturing lines that rely on the robust and proven SIMATIC S5 platform.

Country of Origin

Made in Germany.

CO2 Impact

By purchasing this pre-owned module instead of a new one, you help avoid the emission of approximately 16 kg of CO2. This is equivalent to the savings from not driving a car for 80 kilometers.

Availability

This item is an obsolete component but is available from our stock. Order now from spareparts2day for expert support and fast delivery.

FAQ

What is the maximum distance supported between the S5-115U Expansion Unit (EU) and the Central Controller (CC) when using the IM 312 (6ES5312-5CA22)?

The IM 312 module allows for a maximum connection distance of 3 meters between the central rack and the first expansion rack. For longer distances, a different interface module pair, such as the IM 306, would be required.

Does the 6ES5312-5CA22 require any specific configuration or addressing in the PLC hardware configuration?

Yes, the interface module must be correctly configured in the S5 hardware configuration using STEP 5 software. It occupies I/O space, and the addressing of the connected expansion unit’s I/O modules will depend on this setup. Incorrect configuration can lead to communication errors or the Central Controller not recognizing the Expansion Unit.

Is this module compatible with all versions of the S5-115U PLC?

The IM 312 is designed for the S5-115U system architecture when used as an expansion unit connected to a more powerful central controller. It is essential to consult the specific manuals for your CPU and the IM 312 to ensure full compatibility and understand any limitations regarding the number of expansion units supported.

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Friday, March 13, 2026