Rockwell Automation Publication 1756-RM100F-EN-P - October 2018 135
Instruction Execution Chapter 6
Copy/File Instructions
This section describes the changes to copy/file instructions that apply to the
following:
• COP and CPS Into Structures
• JSR and RET Parameters Passing Into Structures
• JSR passing Atomic Data type into an Array or Structure
• Instructions That Operate On Arrays
COP and CPS Into Structures
Copying a 10-element array into a 100-element array now moves 10 elements
(limited by the source). As always, copying a 100-element array into a
10-element array only moves the first 10 elements of the source (limited by the
destination).
Mitigation
N/A
IMPORTANT Manually determine the impact to your application and correct accordingly.
Language Affected
Ladder Logic (RLL) Yes
Struc tured Text (ST) Yes
Function Blocks (FBD) Yes
Sequential Function Chart (SFC) Yes
(1)
(1) Only affects embedded Structured Text.
5580/5380 Controllers 5570/5370 Controllers
The GuardLogix 5580 and Compact GuardLogix 5380
controllers remove the possibility of a major fault due
to a memory mis-compare between the primary
controller and the safety partner.
These random values can cause a major fault in the
GuardLogix 5570 and Compact GuardLogix 5370
controllers due to a memory mis-compare between
the primary controller and the safety partner.
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