Apr 16, - This provides essential data accessibility for design teams who create or receive files using Autodesk software. In particular, the AutoCAD Plant. Dec 20, - In a continuing effort to provide high-quality products, Autodesk has released AutoCAD Plant 3D Service Pack 1. This service pack. Thank you for downloading AutoCAD® Plant 3D and AutoCAD® P&ID Service Pack 1. This readme contains the latest information regarding the.