SIEMENS 6ES7378-2AB00-0AC0

Siemens SIMATIC M7-300 Expansion Module Description The Siemens EXM 378-2 is a specialized expansion module for the now obsolete SIMATIC M7-300 automation system. This module is engineered for high-performance applications that require fast and accurate counting, position detection from encoders, or frequency measurement. It serves as a critical component for maintaining legacy systems that perform complex motion and measurement tasks. Specifications Manufacturer: Siemens Product Line: SIMATIC M7-300 Model: EXM 378-2 Part Number (MLFB): 6ES7378-2AB00-0AC0 Functionality: Counter, Positioning, Measurement Module Input Voltage: 24V DC Interfaces: 2x D-Sub connectors for A I/O and D I/O Compatibility: Specifically for SIMATIC M7-300 PLCs Label Info Part Number: 1P 6ES7 378-2AB00-0ACO Serial Number: SVPL2303701 Input: DC24V/0.1A Application This module is ideal for industries that rely on legacy M7-300 controlled machinery for tasks such as material handling, cut-to-length applications, packaging, and assembly lines where precise positioning and high-speed counting are essential. Country of Origin Made in Germany. CO2 Impact By purchasing this reused module, you are helping to avoid approximately 20 kg of CO2 emissions associated with the production of a new one. This is a sustainable choice for your operations. Availability This is an obsolete item with limited availability. It is a valuable spare part for extending the operational life of existing M7-300 installations. Order now from profideals for expert support and fast delivery. FAQ Is this module compatible with a Siemens S7-300 rack?No, despite the “300” in the name, the SIMATIC M7-300 series is a distinct and incompatible product line from the much more common SIMATIC S7-300. This module requires an M7-300 CPU and backplane. What are the primary applications for the EXM 378-2 module?This module was designed for high-speed applications requiring precise counting, frequency measurement, or position detection from encoders. It’s ideal for tasks like controlling conveyor belts, cutting-to-length processes, or capturing fast sensor signals. Can I find programming examples or documentation for this module?Documentation for the obsolete M7-300 system is very difficult to find. It is not available on the modern Siemens Industry Support portal. You would need to search archival sources or rely on existing program documentation from the machine it was used in. Last Update: Friday, March 13, 2026 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.