Siemens 6ES7955-2AL00-0AA0

The Siemens 6ES7955-2AL00-0AA0 is an essential working memory expansion card designed for the S7-400 PLC system, offering an impressive capacity of 2x2MB. This highly compatible component enhances the performance of your S7-400 setup, particularly with CPU417-4 V3 and CPU417H V3 processors, allowing for increased RAM memory needed for data and code storage. While specific user manuals, installation guidelines, and troubleshooting resources may require consultation with the manufacturer or verified suppliers, the overall functionality provided by this memory expansion card is crucial for optimizing control processes within industrial automation environments. Access to programming through Siemens' software, like SIMATIC STEP 7, further enhances its versatility, making it a valuable addition to your PLC system.