Allen-Bradley 1747-M1 Memory Module

Allen-Bradley 1747-M1 Memory Module is a 1K user-word EEPROM memory module designed for the SLC 500 family, specifically the 5/01 processors, with compatibility for 5/02 in Series A configurations. This non-volatile EEPROM memory module uses NEC uPD28C64-250 memory and is intended to retain the controller’s essential memory content when power is removed. As a component in the 1747 memory module family, the M1 occupies a dedicated slot in the SLC 500 chassis and sits alongside higher-capacity options such as the M2 (4K) and M13 (64K) modules in later configurations. Common applications include saving configuration data and program elements for SLC 5/01/5/02 systems in legacy automation projects, enabling straightforward data migration or recovery in the event of processor or power interruptions.