SIEMENS 6ES5312-5CA12

Siemens SIMATIC S5 Interface Module 6ES5312-5CA12 Description The 6ES5312-5CA12, also known as the IM 312, is a crucial interface module for the Siemens SIMATIC S5 automation platform. It facilitates the connection between a central controller (CC) of an S5-135U or S5-155U system and an expansion unit (EU), enabling the expansion of the system’s I/O capabilities over a distance. This module is essential for maintaining and repairing legacy systems that rely on the robust and widely deployed S5 architecture. Specifications Manufacturer: Siemens Product Line: SIMATIC S5 Part Number: 6ES5312-5CA12 Module Type: Interface Module IM 312 Application: Connection of S5-135U/155U Central Controller to Expansion Units Version (E-Stand): 01 Label Info Board Designation: PC 612 F B1100-F425 WK Board Order Number: C79458-L820-B17 Application Used in manufacturing, process control, and industrial automation systems from the 1980s and 1990s. Critical for extending the I/O of S5-135U and S5-155U PLCs to additional racks. Country of Origin Germany CO2 Impact By choosing this pre-owned module over a new one, you contribute to significant CO2 savings. This single component represents an avoided emission of approximately 20.0 kg, which is comparable to the emissions from a car driving 100 kilometers. Opting for circular economy solutions is a smart choice for both your budget and the planet. Availability This product is an obsolete but essential spare part. Availability is limited. Order now from profideals for expert support and fast delivery. FAQ Question? What is the maximum distance between the central controller and the expansion unit when using the IM 312? The IM 312 (6ES5312-5CA12) uses a specific interface cable, and the maximum transmission distance is typically limited to 3 meters. Question? Is this module compatible with other SIMATIC S5 PLCs like the S5-115U? No, the IM 312 is specifically designed for use with the S5-135U and S5-155U high-performance PLCs. It is not compatible with smaller systems like the S5-95U or S5-115U. Question? Does this module require any specific configuration or programming in STEP 5? The module itself does not require programming, but the PLC’s hardware configuration must be correctly set up in the STEP 5 software to recognize the expansion rack and its associated I/O modules connected via the IM 312. profideals 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: March 13, 2026