Duplicate off-module reference (AI/I, AI/I) to Module 1,01,02 Block 1002: 1020205A.CAD and 1020208A.CAD

This message indicates that the same exception report value is being imported into a module twice.

This is a serious problem if the import block is in use, because one of the values is always frozen. When you switch to the redundant module, as you do for a configuration change, the one that was working freezes and the other begins working.

In the case of analog blocks, the value will 'flat-line'. In the case of digital inputs, the imported value will simply fail to respond to a change in the source. This can be catastrophic.

You can find these in Hyperview by searching for the block then clicking on the exception report import blocks that are in the same module.

Example 1 (both import blocks used): DBDOC identifies these situations, since one of the import blocks is always frozen.

Duplicate off-module reference (DI/I, DI/I) to Module 2,05,02 Block 2713:
20202Y8: Composer Initial Revision and 20202Z2: Composer Initial Revision

Example 2 (one import block used, one not used): DBDOC identifies these situation, since there is a 50-50 chance that the unwired block will have live data and the wired one will be frozen.

Duplicate off-module reference (DI/I, DI/I) to Module 7,27,02 Block 35: 20102Y3A.CAD and 20102ZZA.CAD

Example 3 (both import blocks not used): There is no DBDOC error message for this situation, because there is no harm possible.

This message is likely to show an error in the system configuration. It should be reviewed. The issue raised may be in unused logic or graphics, or have other realities that make it a non-issue.

Please contact us for help resolving your error messages.