Allen Bradley 1785-ME16 Key Technical Details
Manufacturer: Rockwell Automation / Allen-Bradley (A-B)
Model Number: 1785-ME16
Allen Bradley 1785-ME16 Component Type: EEPROM Memory Module Cartridge
1785-ME16 AB Memory Capacity: 16 KWords (16 Kilowords, where 1 Word = 16 Bits)
Storage Medium: EEPROM (Electrically Erasable Programmable Read-Only Memory)
Data Protection: Hardware write-protect jumper (prevents accidental data overwrites)
Hot Swapping: Not supported (No RIUP); never insert or remove while the PLC is powered
System Compatibility: Dedicated exclusively to the Allen-Bradley PLC-5 controller system
Compatible Processors: 1785-L11B, 1785-L20B, 1785-L30B, 1785-L40B, 1785-L60B, and 1785-L80B (Series C, Revision C and later)
Lifecycle Status: Officially discontinued (Discontinuation date: September 30, 2021)
If you want to more details about Allen Bradley 1785-ME16，please contact me without hesitation.Email：sales@sparecenter.com
Proven Capability Of Spare Center
Massive Stock: 1,000,000+ PLC and DCS parts in Hong Kong.
Obsolete Experts: Specializing in rare and discontinued industrial components.
Fast Delivery: Same-day worldwide shipping reduces unexpected plant downtime.
Global Reach: Serving industrial buyers across over 100 countries.
Quality Assured: Rigorous testing backed by certified third-party inspection options.
Case Study: Allen Bradley 1785-ME16 Memory Backup in a Raw Mill
16 K Words Memory Memory Module Application: Raw Mill control system at a large-scale cement manufacturing plant.
16 K Words Memory Memory Module System Architecture: An Allen-Bradley PLC-5/40 controller (1785-L40B) running in a harsh industrial environment with heavy vibration and electromagnetic interference (EMI).
The Challenge of Allen Bradley 16 K Words Memory Memory Module: The factory frequently experienced voltage drops and long scheduled shutdowns. If the PLC's internal backup lithium battery drained or if EMI corrupted the processor's RAM, the control logic would be lost, causing hours of unscheduled downtime to manually reload the program.
The Solution of Allen Bradley 16 K Words Memory Memory Module: Engineers installed a 1785-ME16 (16 KWords EEPROM) memory module into the PLC-5 processor. Once system tuning was complete, the 16 KWords of logic and critical PID parameters were permanently burned onto the EEPROM. The hardware write-protect jumper was then engaged to prevent accidental overrides.
The Result of Allen Bradley 16 K Words Memory Memory Module: During a major summer power outage, the PLC backup battery completely drained. Upon power restoration, the PLC-5 detected the corrupted RAM and automatically restored the entire user program from the Allen Bradley 16 K Words Memory Memory Module within milliseconds. The controller safely returned to RUN mode immediately, preventing a costly production delay.
Allen Bradley 1785-ME16 FAQ
Q1: What is the main purpose of the 1785-ME16 AB?
A1: The 1785-ME16 AB provides 16 KWords of non-volatile EEPROM backup storage to save and restore PLC-5 user programs when the main RAM loses power.
A1: The 1785-ME16 AB provides 16 KWords of non-volatile EEPROM backup storage to save and restore PLC-5 user programs when the main RAM loses power.
Q2: Can the 1785-ME16 AB be plugged in while the PLC is powered?
A2: No, the 1785-ME16 AB does not support hot-swapping. You must turn off the PLC-5 chassis power before installing or removing the 1785-ME16 AB to avoid damage.
A2: No, the 1785-ME16 AB does not support hot-swapping. You must turn off the PLC-5 chassis power before installing or removing the 1785-ME16 AB to avoid damage.
Q3: How do you prevent data from being modified on the 1785-ME16 AB?
A3: The 1785-ME16 AB includes a physical hardware write-protect jumper that safely blocks software from overwriting the stored backup data.
A3: The 1785-ME16 AB includes a physical hardware write-protect jumper that safely blocks software from overwriting the stored backup data.
Q4: How does the 1785-ME16 AB react if the PLC battery fails?
A4: Upon power-up, if the PLC detects a dead battery and corrupt RAM, it automatically reloads the stored user program from the 1785-ME16 AB within milliseconds to prevent downtime.
A4: Upon power-up, if the PLC detects a dead battery and corrupt RAM, it automatically reloads the stored user program from the 1785-ME16 AB within milliseconds to prevent downtime.
Q5: Is the 1785-ME16 AB still available for purchase since it is discontinued?
A5: Yes, although Rockwell Automation discontinued this model, you can purchase reliable, fully tested 1785-ME16 AB replacement units directly from our spare center inventory.
A5: Yes, although Rockwell Automation discontinued this model, you can purchase reliable, fully tested 1785-ME16 AB replacement units directly from our spare center inventory.
Other Module
| 1785-L60B | 1756-L64 |
| 1756-CN2 | 1756-L65 |
| 1746-IB32 | 1756-L71S |
| 1756-IF16 | 1756-L72 |
| 1747-BA | 1756-LSC8XIB8I |
| 1771-OBD | 1756-LSP |
| 1203-GD1 | 1756-OB16D |
| 1746-HT | 1756-OF6VI |
| 1746-IB16 | 1756-PA75R |
| 1746-IH16 | 1756-PB75 |
| 1746-IO8 | 1756-RIO |
| 1746-IV16 | 1756-RMC3 |
| 1746-NI8 | 1756SC-IF8H |
| 1746-NIO4I | 1757-SRM |
| 1746-OB32 | 1768-EWEB |
Contact Us
Email: sales@sparecenter.com
