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Generating an add-on instruction signature, Creating a signature history entry – Rockwell Automation Logix5000 Controllers Add-on Instructions Programming Manual User Manual

Page 61

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Defining Add-On Instructions

Chapter 2

For procedures on how to use the Source Protection feature, refer to the

Logix5000 Controllers Security Programming Manual

, publication

1756-PM016

.

The Signature tab on the Add-On Instruction Definition Editor lets you manage
the instruction signature, create signature history entries, and view the safety

instruction signature, if it exists. Instruction signatures are applied to the

definition of the Add-On Instruction. All instances of that Add-On Instruction

are sealed when the signature is applied.

Generating, removing, or copying an instruction signature

On the Signature tab on the Add-On Instruction Definition Editor, click

Generate to create an instruction signature or Remove to delete the instruction
signature.

You must be offline to generate or remove an instruction signature. Both actions

change the Last Edited Date.

Important:

If you remove an instruction signature when the Add-On Instruction also has a safety instruction

signature, the safety instruction signature is also deleted.

You can click Copy to copy the instruction signature and the safety instruction

signature, if it exists, to the clipboard to facilitate record-keeping.

Important:

If an invalid instruction signature is detected during verification, an error message indicates that
the signature is invalid. You must remove the instruction signature, review the Add-On

Instruction, and generate a new instruction signature.

Creating a signature history entry

The signature history provides a record of signatures for future reference. A

signature history entry consists of the name of the user, the instruction signature,

the timestamp value, and a user-defined description. You can only create a

signature history if an instruction signature exists and you are offline. Creating a

signature history changes the Last Edited Date, which becomes the timestamp
shown in the history entry. Up to six history entries may be stored.

Follow these steps to create a signature history entry.

Generating an Add-On

Instruction signature

Rock well Automati on Publication 1756- PM010F-EN-P - Oct ober 2014

61