Description

Product Description

The Allen-Bradley 1785-ME16 functions as a high-reliability storage expansion for the PLC-5 controller platform. By providing 16K words of non-volatile Electronically Erasable Programmable Read-Only Memory (EEPROM), this module effectively secures critical user programs against power loss or processor memory erasure. Engineers utilize this hardware primarily to facilitate automatic program loading during system initialization, which eliminates the need for manual intervention and reduces overall plant downtime.

To maintain data integrity, the 1785-ME16 incorporates a physical write-protection jumper. When users enable this feature, the module prevents unauthorized or accidental modifications to the stored logic. This safety mechanism proves essential in complex industrial environments where accidental program overwrites could lead to significant operational hazards.

This memory module maintains broad compatibility across the classic PLC-5 architecture. It integrates seamlessly with enhanced processors, including the PLC-5/11, 5/20, 5/30, 5/40, and 5/80 series, as well as Ethernet-enabled versions like the PLC-5/40E. Furthermore, the module’s robust construction ensures performance stability even when exposed to high-vibration conditions or thermal fluctuations common in heavy manufacturing. Because improper handling can compromise hardware, technicians must ensure the processor power remains off during both installation and removal of the module to prevent electrical damage.

Technical Specifications

• Manufacturer: Allen-Bradley / Rockwell Automation
• Catalog Number: 1785-ME16
• Memory Capacity: 16K Words
• Technology Type: EEPROM (Non-Volatile)
• Processor Compatibility: PLC-5 Enhanced and PLC-5 Ethernet series
• Protection Mechanism: Removable write-protect jumper
• Operating Temperature: 0 to 60 °C (32 to 140 °F)
• Relative Humidity: 5% to 95% (non-condensing)
• Vibration Resistance: 3 g non-operating; 15 g peak shock acceleration
• Certifications: UL, CSA, CE