We provide Parametric Robot Control in three versions — Windows, macOS,
and a cross-platform Developer build for all .NET platforms. For most users we recommend
the most recent release below. At the moment, no stable release is available as PRC is in heavy development.
The Manual Download section contains the most recent releases as well as an archive of older
installers — if you require a specific version, contact us. Please refer to
docs.robotsinarchitecture.org for support.
Recommended Download
1.780.0.0 (2026-11-06)
Manual Download
Operating System
Windows
macOS
Developer
Type
Stable
Preview
Version
An experimental Docker image is provided at
jbraumann/prcserver.
Map ports 5001 to 5001 for basic functionality. Real-time interfaces may require more ports to be opened.
Release Notes
Important: On macOS, if you are using a version older than mid-April 2026, you may need to re-install your certificate if you encounter errors! This is a one-time action — leaf certificates are now generated automatically for every new version and do not need to be re-installed manually.
NEW
Spline motions: KUKA spline blocks (SPL, SLIN, SCIRC) in Grasshopper (Spline Path, SPL Motion) and over gRPC
Robots: KUKA LBR iisy 6-11 R1300 and LBR iisy 8-15 R930.
Collision checking: large checks run on the graphics card where one is available; the Server picks the fastest device itself.
Grasshopper: one AXIS Motion component for every robot, whatever its number of axes.
IMPROVEMENTS
KUKA iiQKA.OS 2 upload: works while another program is selected, and names the reason when the controller refuses.
External tools: drivers that cannot run a stationary tool say so instead of writing a program; KUKA KRL writes it as before.
Grasshopper: Grasshopper 2 runs faster and its Robot Visualizer updates more smoothly.
