The Allen-Bradley 1747-M1 is a 1K EEPROM memory module for the SLC 500 family, compatible with the SLC 5/01 and 5/02 processors. It provides non-volatile storage of 1K user words, retained without power, making it a dedicated memory option for the controller’s memory system. This module plugs into the SLC 500 memory slot and is used to hold user data or small program constants accessed by the PLC software.
