Rockwell Automation T8015 Trusted Toolset Application Validator Software Package - Manual (Page 7)

Trusted
TM
Application Validators T8015
Issue 7 Oct 05 PD-T8015 7
1. Description
1.1. Validator #1 – Cross Reference Checker
This Validator processes the cross reference file that is output as a result of using the IEC1131
TOOLSET 'Cross Reference' tool. The Validator processes this file then presents the user with a
graphical display of variable usage. This enables the user to easily identify variables that are shared
between programs within an application.
Programs that share one or more variables are dependent on each other, i.e. changes to one program
can affect the behaviour of its dependent. These dependencies must be checked during the
development of such an application if the target integrity for the application is to be SIL3 (AK6). The
cross reference checker aids this task by identifying program dependencies and thus enables the
applications developer to perform adequate re-test of affect programs.
The Validator can be run as a stand alone application, or by selecting 'Cross Ref. Validator' from the
IEC1131 TOOLSET 'Tools' menu. Before running the Validator, the cross reference file must be
generated. It is recommended that the file is given the same name as the project with an '.xrf'
extension, and is located in the application directory as the Validator looks for this file by default when it
is run from the IEC1131 TOOLSET 'Tools' menu. For example, if the project name is 'projxyz' then
enter the filename 'c:\isawin\apl\projxyz\prjxyz.xrf' when generating the cross reference file. Note that
the complete path name must be entered.
1.1.1. Using Validator #1
The Cross Reference Checker (Validator #1) can be run as a stand alone application or by selecting
'Cross Ref. Validator' from the IEC1131 TOOLSET 'Tools' menu.
1.1.2. Generating a Cross Reference File
To generate the cross reference file for an application follow these steps:
1. Start the IEC1131 TOOLSET 'Projects' manager.
2. Select and double-click on the project containing the required application.
3. Select the 'Cross References' item from the 'Tools' menu.
4. Ensure that the Object type selection is set to '(all)' then select the 'Export (text file)' option
from the 'File' menu.
5. Enter a filename for the cross reference file.