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1785-MJ Allen-Bradley
Product Details
Specifications provided for reference. Verify critical details against official manufacturer documentation before installation.
Product Overview
The 1785-MJ is an Allen-Bradley PLC-5 series non-volatile EEPROM memory cartridge providing 8 K words of program backup storage. It installs into the PLC-5/10 and PLC-5/12 family to retain user program when power is removed. This module is used for program backup rather than runtime operation and ensures that controller logic is preserved during power cycles in applications such as discrete machine control, batch processing, or older systems maintenance. Part number 1785-MJ is fully compatible with classic PLC-5 platforms.
Best Suited For
- Program backup in PLC-5/10 and PLC-5/12 processors
- Maintaining ladder logic memory through power cycles
- Legacy discrete control systems
- Maintenance of legacy Allen-Bradley PLC-5 series installations