Allen-Bradley 1747-M15 SLC 500 Memory Adapter Socket

June 11, 2026 • 3 min read • wayne • Science

The 1747-M15 is a memory adapter socket for Allen-Bradley SLC 500 processors. It enables PROM programming of the 1747-M13 memory module. It supports 64 kilobytes of flash memory. Its program scan time is 0.9 milliseconds. This socket fits all SLC 5/03, 5/04, and 5/05 processors.

Product Procurement & Buyer Guide

The 1747-M15 adapter socket is essential for programming memory modules. You must use a Series B version with the 1747-M13 module. Using a Series A adapter may damage both parts. This socket supports a 65-kilobyte flash EEPROM unit. It provides a backup memory solution for your PLC. The socket prevents data loss during battery failure. Battery drain erases RAM, but flash protects your program. The user program reloads automatically on every power cycle.

The adapter socket measures six by six by three inches. It weighs exactly two pounds. It operates in a relative humidity between five and ninety-five percent. The operating temperature range is zero to sixty degrees Celsius. Storage temperatures range from negative forty to eighty-five Celsius. The socket resists operating shock of one G at five to two thousand Hertz. These specs match the SLC 500 control platform standard.

Proper grounding is critical due to electrostatic discharge sensitivity. Always wear a grounded wrist strap when handling the socket. Work in an ESD-free environment to protect memory integrity. The keyed connectors prevent improper installation. Ensure the controller power is off before inserting the processor. This practice avoids damage and unwanted faults.

Step-by-Step Installation Guide

First, power down the controller completely. Then remove the processor from its chassis. Insert the 1747-M13 memory module into the 1747-M15 adapter socket. Align the keyed connectors carefully. Place the adapter into the zero insertion force (ZIF) socket on a PROM programmer. Use a commercial PROM programmer to program or erase the module.

After programming, remove the adapter from the programmer. Install the memory module back into the processor. Ensure the jumper connects A18 to the center pin for correct orientation. Reinstall the processor into the SLC chassis. Power up the controller. The user program will load automatically from the flash memory.

Verify the program scan time meets your requirements. The socket delivers a program scan time of 0.9 milliseconds. The I/O scan time is 0.225 milliseconds. It supports up to three chassis and thirty module slots. Communication options include Ethernet and RS-232. The SLC 5/03 uses RS-232 for external devices. The SLC 5/04 has a DH+ port for high-speed communication. The SLC 5/05 uses standard Ethernet communications.