A comprehensive range of supplementary products is provided for the distributed drive technology, e.g. pre-assembled cables and connectors. An overview is provided at the following link:
http://www.siemens.com/distributeddrives-supplementaryproducts

Further selected accessories are available from the Siemens Solution Partners. Select "Distributed Field Installation System" as the technology in the "Solution Partner Finder".
http://www.siemens.com/automation/partnerfinder

For further information about the connecting cables and plug-in connectors, please refer to Catalog IK PI.