= scenario 2 - managing changes=

design feedback

Observation	Recommendation
When the user was asked to open a PLC program, his instinct is to start Logix and select "Open" from the File menu. He tries to avoid the whole Source Control tool.	Allow users to check out files from Source Control within the Logix File menu. Also give users the option of opening a checked out PLC file inside (product)
In Logix, user repeatedly lost comment data in the comment entry dialog because focus was on OK button. User expects the dialog to have the curser enabled so that he can just start typing.	Enable the curser instead of the "Ok" button on this dialogue. Adding an extra step to enable the curser discourages users from adding comments.

post-scenario questionnaire results

Question	Mean Likert Scale Rating(1-7)
1.) I found these tasks easy to work through.	5
2.) I had no problem accessing the features I worked with.	4
3.) I like how the software helps me perform these tasks.	5
4.) I could complete these tasks in a reasonable amount of time.	5
5.) This scenario is representative of the tasks that I perform on a daily basis.	5

scenario materials

User: In this scenario, you will be editing ladder logic running in your SoftLogix5 controller. You will also be managing the ladder changes using the (product) Source Management and Audit Trail features.

Task One: Check a PLC program out of Source Control (housed in “RSTechEd2001” folder)

	Download the checked out file and go online.
	Put the processor into program mode.

Task Two: Make online edits –

	In Program File 2: insert the following rung before rung 5. Accept your edits. When prompted, enter a rung comment.
	Edit rung 9:0 by adding a normally open contact on the OR Branch. When prompted, enter a rung comment.
	Now go back and delete the rung that you inserted in task 2a. Accept your edits. When prompted, enter a rung comment.
	Delete the new XIC instruction that you inserted at 2b. When prompted, enter a rung comment.

Task Three: Data table edits.

	Open data file N7 and note the value of element 50.
	Change the value of N7:50 to 100.
	Close data file N7.
	Create a force in your processor for output address O:000/1 and enable the force
	Disable and remove all forces

Task Four: Uploading from a SoftLogix5 controller

	Save the project to your TEMP folder
	Go offline with the SoftLogix controller.
	Close RSLogixMD 5

Task Five: Checking PLC program into Source Control

	Open (product) in (product)
	Open your “RSTechEd2001 “ folder and select your PLC1.RSP file. Check-in your file with the following parameters: Do not keep the file checked out Do not remove the local copy Enter a sentence or two in the comment field to describe your actions.