Configured for non-volatile logic retention in SLC 500 processors, the Allen-Bradley 1747-M11 (1747-M11 Memory Module) provides direct physical/electrical execution of program and data table backup across supported controller platforms.
Hardware Specifications
Parameter
Specification
Brand
Allen-Bradley
Model
1747-M11
Origin
USA
Weight
0.11 kg (0.25 lbs)
Dimensions
Direct socket processor mount footprint
Operating Temp
Standard SLC 500 rating (0 to 60 deg C operational)
The EEPROM memory module plugs directly into the processor socket, retaining controller logic and configuration tables independent of battery backing voltage. During controller boot execution, memory contents load directly onto the local bus, ensuring firmware flash compatibility and immediate data restoration. Backplane bus communication velocity remains uninterrupted, permitting rapid initialization of connected rack I/O modules and high-speed scanner links across deterministic industrial networks.
Frequently Asked Questions
Q: Which hardware series revision limits apply when pairing the 1747-M11 with SLC 5/03, 5/04, or 5/05 controllers?
A: Series A 1747-M11 modules are restricted to SLC 5/03 Series A or B processors, whereas Series B 1747-M11 modules are required for SLC 5/03 (OS302), SLC 5/04 (OS401), and SLC 5/05 processors.
Q: Is an auxiliary adapter required when burning programs via an external socket programmer?
A: Yes, interfacing the 1747-M11 module with a user-supplied PROM programmer requires a 1747-M15 memory module socket adapter.
Q: Can the 1747-M11 be utilized alongside BASIC interface modules like the 1746-BAS?
A: No, the 1747-M11 is hardware incompatible with 1746-BAS and 1746-BAST specialty modules.
Field Installation Guidelines
Always disconnect electrical power from the host SLC 500 rack prior to removing the processor module. Wear an ESD wrist strap grounded to the enclosure earth bar to prevent electrostatic discharge from damaging the integrated circuit pins.
Locate the memory module socket on the main processor circuit board. Orient the keyed lead headers on the 1747-M11 with the socket outline, taking care not to bend pins during insertion. Press firmly until the module is fully seated. Re-insert the controller into its designated chassis slot, lock the top and bottom chassis latches, and power up the system to configure EEPROM loading parameters in software.
