Yokogawa Electric Corporation RK10-0N ROM Pack

The Yokogawa RK10-0N ROM Pack is a removable memory module for Yokogawa FA-M3 PLC systems that stores control programs and configuration data in non-volatile memory, ensuring they are retained without power and automatically loaded at startup. Designed for use with FA-M3 sequence CPU modules, particularly the F3SP series, it provides reliable program retention and straightforward duplication of logic across controllers. Key specifications include a memory capacity of approximately 5K ladder steps (model dependent) and data such as control programs, configuration data, timer and counter presets, system tables, and comments; it is a plug-in module that installs directly into the CPU unit and is written via Yokogawa programming tools, with non-volatile operation and auto-load on power-up, and has limited compatibility with BASIC CPU modules. Common applications include manufacturing lines, machine control, and process automation where dependable program retention, system recovery, and duplication of control logic across multiple controllers are required; common replacements include the RK30-0N and RK50-0N, and note that this ROM pack is not supported on newer CPUs that use SD/flash memory.