Rockwell-automation Logix5000 Controllers Add-on Instructions Programm Bedienungsanleitung Seite 24

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Chapter 1 Designing Add-On Instructions
Copy the instruction signature
Create or copy a signature history entry
Create instances of the Add-On Instruction
Download the instruction
Remove the instruction signature
Print reports
The instruction signature does not prevent referenced Add-On Instructions or
User-defined Data Types from being modified. Changes to the parameters of a
referenced Add-On Instruction or to the members of a referenced User-defined
Data Type can cause the instruction signature to become invalid. These changes
include:
Adding, deleting, or moving parameters, local tags, or members in
referenced User-defined Data Types.
Changing the name, data type, or display style of parameters, local tags, or
members in referenced User-defined Data Types.
If you want to enable project documentation or source protection on an Add-On
Instruction to be sealed with an instruction signature, you need to import the
translated information or apply source protection before generating the signature.
You must have the source key to generate a signature or to create a signature
history entry for a source-protected Add-On Instruction that has an instruction
signature.
See Defining Source Protection for an Add-On Instruction on page 60
for more
information on source protecting your Add-On Instruction.
Safety instruction signature
When a sealed safety Add-On Instruction is downloaded for the first time, a SIL 3
safety instruction signature is automatically generated.
For details on how to certify a safety Add-On Instruction, refer to the
GuardLogix
Controller Systems Safety Reference Manual, publication 1756-RM093.
Programming languages
Select the programming language based on the type of application you are
developing. Ladder Diagram, Function Block Diagram, and Structured Text can
be used for Add-On Instruction logic.
24 Rockwell Automation Publication 1756-PM010F-EN-P - October 2014
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