An IREF is used in the project that had no matching External OREF. This can arise in a conversion from WinCAD, for example, when the input reference text on an AI/I reference is the same as that on OREF that distributes its value through the module.
External output reference does not exist for IREF T6 IMPORTED POWER (MBUS) on Module 7,53,31 Block 22640
The significance is that only the specifications on the block are being used to make the connection.
Please contact GMCL for assistance with resolving these messages. We might need to ask for files that cause these messages for analysis.
Note also: Error messages can be built directly into your M14 file. For more information, see Building error reports into the M14.