PLC 1775-ME4 PLC-3 16K Memory Module

1775-ME4 is a 16K-word memory module that stores processor program and data in a compatible PLC-3 processor chassis. Its catalog number, chassis model and installed memory arrangement must match the target system.

1775-ME4 provides 16K, or 16,384 words, of processor memory. Capacity planning must account for the complete program, data requirements and the memory-module arrangement installed in the PLC-3 chassis.

1775-ME4 is documented for PLC-3 processor chassis catalog numbers 1775-A1, 1775-A2 and 1775-A3. The exact chassis, processor and existing memory modules must be verified before installation.

1775-ME4 provides 16K words, while 1775-ME8 provides 32K words. They are not interchangeable solely by appearance because memory capacity, program size, chassis configuration and the documented module arrangement must all be checked.

1775-ME4 should not be replaced by 1775-MS4 without system verification. Although both are listed at 16K words, they belong to different PLC-3 and PLC-3/10 memory-module families, so the processor chassis and complete catalog number must match.

1775-ME4 requires confirmation of the processor chassis, installed memory arrangement and complete catalog number. Back up the application, follow the official power-isolation procedure and handle the memory module according to the system documentation.

For 1775-ME4, provide the exact catalog number, processor and chassis model, existing memory modules, program-memory requirement, required quantity, installation location and delivery destination.