Software restrictions – Rockwell Automation 1768-L45S Compact GuardLogix Controllers User Manual
Page 91
Rockwell Automation Publication 1768-UM002C-EN-P - April 2012
91
Develop Safety Applications
Chapter 6
Delete the Safety Task Signature
Click Delete to delete the safety task signature. The safety task signature cannot
be deleted when the following is true:
•
The controller is safety-locked.
•
The controller is in Run mode with the keyswitch in RUN.
•
The controller is in Run or Remote Run mode with run mode protection
enabled.
Software Restrictions
Restrictions limiting the availability of some menu items and features (that is, cut,
paste, delete, search and replace) are imposed by the programming software to
protect safety components from being modified whenever the following is true:
•
The controller is safety-locked.
•
A safety task signature exists.
•
Safety faults are present.
•
A non-recoverable safety fault is present.
If even one of these conditions apply, you may not do the following:
•
Create or modify safety objects, including safety programs, safety routines,
safety tags, safety Add-On Instructions, and Safety I/O modules.
•
Apply forces to safety tags.
•
Create new safety tag mappings.
•
Modify or delete tag mappings.
•
Modify or delete user-defined data types that are used by safety tags.
•
Modify the controller name, description, slot, and safety network number.
•
Modify or delete the safety task signature, when safety-locked.
ATTENTION: If you delete the safety task signature, you must retest and
revalidate your system to meet SIL 3/PLe.
Refer to the GuardLogix Controller Systems Safety Reference Manual,
publicat
, for more information on SIL 3/PLe requirements.
IMPORTANT
The scan times of the safety task and safety programs can be reset
when online.