Symax 8020-SMM-710X Memory Module

Symax 8020-SMM-710X is a 32K bubble-memory memory module designed for the SY/MAX Class 8020 Square D PLC family, typically paired with Model 700 processors and the associated memory control unit. The 32 kilobytes are stored on a bubble memory medium, a non-volatile technology used in legacy automation gear, enabling memory contents to persist without continuous power. This module plugs into the 8020 system’s memory interface and is cataloged as the 710X variant within the 8020-SMM family, alongside other 710-series configurations. Power requirements, as documented in distributor and service manuals, include 5 V DC at up to 2.5 A and 12 V DC at up to 0.8 A. In practice, 8020-SMM-710X is used to expand or replace memory on older SY/MAX 8020 installations, supporting model 700 processors in applications like process control, machine automation, and legacy industrial equipment that still rely on the SY/MAX memory architecture.