The Siemens 6ES7478-1AN10-0AA0 is a MEM478 memory module with 8 MB RAM, designed for the S7-400 programmable logic controller family. It slots into the CPU or memory-card bay to expand program and data storage for larger control applications.
Siemens 6ES7478-1AN10-0AA0 MEM478 Memory Module, 8 MB RAM
MPN6ES7478-1AN10-0AA0
Siemens S7-400 MEM478 memory module, 6ES7478-1AN10-0AA0, 8 MB RAM, mature lifecycle.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Product details
Frequently asked questions
What is the memory capacity of this module?
It is a MEM478 memory module with 8 MB RAM for the S7-400 series.
MPN
6ES7478-1AN10-0AA0