G4M-M032

Description

This is a memory module for LS’s GM4/G4 series PLCs, with flash memory capacity of 128 K bytes (32K steps) used for program storage.

The Polar Energy Assessment:

The G4M-M032 module allows the PLC to store user programs in flash memory so the system retains the program even when power is removed. It is small and light; used to back up or replace the built-in memory of the CPU. Proper handling (power-off when installing) is required.

Pros

• Flash memory means non-volatile program storage so system retains logic through power cycles.

Limitations

• It’s a utility module (memory) rather than an I/O or network interface; relevance may be limited.

Typical use cases

• PLC installations where backup memory modules are needed for redundancy or program recovery.
• Replacement memory modules in GM4/G4 PLCs being maintained long-term.