Rslogix 5000 16

family of drives directly within the software, eliminating the need for separate drive-management tools. Logix Alarm Instructions (ALMD/ALMA)

Type: I/O Fault.

While earlier versions supported ladder logic, Version 16 solidified support for: rslogix 5000 16

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. family of drives directly within the software, eliminating