The ROS Community is responsible for publishing the source codes at Pilz Github. At Github you will find the codes for the Pilz ROS packages:
Robotics
Where can I find the source code for the Pilz ROS packages?
Contact
Pilz South East Asia Pte. Ltd.
25 International Business Park, #04-56 German Centre
Singapore 609916
Singapore
Telephone: +65 6839 292-0
E-Mail: sales@pilz.sg
Technical Support
Telephone: +65 6839 292-0
E-Mail: techsupport-sg@pilz.com