OVERVIEW

Official designation: Allen-Bradley 1747-M11 (SLC 500, Memory Module Adapter)

The 1747-M11 is a non-volatile memory adapter for SLC 500 processors, providing 32 KB of EEPROM storage. It allows reliable, portable backup of the PLC program and data files for system maintenance.

KEY SPECS SUMMARY

Power: Not applicable

Interfaces / Ports: Internal slot connector

Indicators: No external indicators

Operating Temp: 0 to 60 degrees C

Platform / Compatibility: SLC 500 processor

Limit: 32 KB EEPROM memory

Lifecycle: Discontinued

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What specific type of non-volatile memory technology does the 1747-M11 use?

A: The module uses EEPROM (Electrically Erasable Programmable Read-Only Memory) for permanent program storage.

Wiring & Installation:

Q: Does the 1747-M11 module require an external power source or battery for memory retention?

A: No, the EEPROM is non-volatile and does not require a battery to retain the program.

Troubleshooting & Compatibility:

Q: What happens if the 1747-M11 module is inserted into an incompatible SLC 500 processor?

A: The processor may fail to boot, or it may indicate a memory fault, requiring removal of the module.

Replacement & Upgrades:

Q: Is the 1747-M11 module a suitable upgrade if an SLC 500 processor requires greater than 32 KB of program memory?

A: No, for greater capacity, a higher density memory module or adapter must be used.