Issue link: https://resources.pcb.cadence.com/i/1180268
Working with IDF Best Practices: Working with IDF October 2019 3 Product Version 17.4-2019 © 1999-2019 All Rights Reserved. You can repeat the steps in Table 1-1, because the IDF interface in Allegro PCB Editor is driven by ownership and reference designators. Only the objects that have reference designators in both MCAD and ECAD are tracked with respect to changes in orientation and location. To successfully transfer component placement information, the MCAD engineer must identify a coordinate system. In Pro/ENGINEER, two coordinate systems are available: ■ Board Coordinate System ■ Component/Part Coordinate System The mechanical engineer uses the config.pro file in the Pro/ENGINEER environment to specify a name for both coordinate systems, for example ECAD_BOARD_CSYS or ECAD_COMP_CSYS (see Table A-1 for additional information). If you do not specify a coordinate system, Pro/ENGINEER uses the name ECAD_DEFAULT. Table 1-2 shows a modified MCAD/ECAD flow that you might consider if you are having problems synchronizing part numbers and reference designators. 7. Appends the new IDF file to the original assembly, which includes new components and holes added by ECAD. Component changes are automatically moved or conflicts can be reported allowing the mechanical engineer to accept or reject changes. Table 1-2 Modified MCAD/ECAD Flow Step MCAD ECAD 1. Creates a printed circuit board, including mounting holes, mechanical parts and known areas such as route keepins, and place keepouts. 2. Exports the design to an IDF 3.0 file. Table 1-1 MCAD/ECAD Flow Step MCAD ECAD