5000 16 - Rslogix
Unlocking RSLogix 5000 Version 16: Still a Powerhouse for Legacy Systems
The Rule of Contiguity: You cannot jump more than 3-4 major versions at once. rslogix 5000 16
She walked the quarter-mile to the tunnel. The cabinet was dark—no green status light on the 1756-IB16I. She opened the door. A faint smell of ozone hung in the air. She checked the backplane power. Fine. She checked the field power. Fine. But the module itself was dead. Unlocking RSLogix 5000 Version 16: Still a Powerhouse
Error 1: "Failed to go online. Controller does not support online editing."
Cause: You are trying to edit a L55 ControlLogix with v16. The L55 only supports online edits up to v13. Fix: Stop the processor or upgrade to L6x series. Initial Release: Circa 2007-2008 End of Life (Sales):
Structured Text: Create a new routine, set the type to "Structured Text," and use a JSR (Jump to Subroutine) from the Main Routine to execute it. Communication Setup:
Key Release Dates
- Initial Release: Circa 2007-2008
- End of Life (Sales): Approx. 2014
- Rockwell Support Status: Expired (No active technical support from Rockwell Automation)
Add-On Instructions (AOI): Create reusable logic blocks by right-clicking the "Add-On Instructions" folder in the Controller Organizer.
2. The DINT vs. INT Dilemma: Why 16 Still Matters
New users often ask: “If the Logix processor is 32-bit, why not always use DINT?”
The answer lies in memory efficiency and CIP messaging.
Reasons to STAY on v16:
- The system is working flawlessly.
- You do not have the original source code, only the running controller.
- Your HMI is old (FactoryTalk View v5 or RSView32).
- You rely on specific third-party modules (Prosoft, MVI) that have not been updated.