If you cannot get the PI Software Suite C-990.CD1 to function, consider these modern replacements:
To understand the C-990.CD1, we have to look at the ecosystem it supports. Physik Instrumente (PI) manufactures a vast array of motion control systems, from simple stepper motor controllers to complex hexapods and piezo nanopositioning stages.
Historically, different controllers required different software environments. You might have needed one set of drivers for a C-884 controller and another for an E-709 digital piezo controller. This created a fragmented workflow.
The C-990.CD1 Software Suite is the consolidation package. It is the standard software delivery platform designed to provide a unified interface for almost all current PI controllers. It isn't just a collection of drivers; it is a comprehensive toolkit that includes: pi software suite c-990.cd1
Think of C-990.CD1 not as a "driver," but as the Operating System overlay for your PI hardware.
Given PI’s modern software ecosystem, why would an engineer in 2025 still search for a 20-year-old CD image?
For many of us, the value of C-990.CD1 lies in its libraries. Let’s look at how it handles the "Big Three" of automation programming. If you cannot get the PI Software Suite C-990
Fix: Legacy PI controllers used FTDI chips with old PID/VID. On Windows 11, you must disable driver signature enforcement temporarily and install the old .inf file from the CD1’s Drivers\USB subfolder.
The most critical component included in the C-990.CD1 is the General Command Set (GCS) infrastructure.
If you are writing code to move a stage, you don't want to write Move_Axis_X(10mm). You want to send a GCS command. GCS is PI’s universal language. Whether you are talking to a stepper motor or a piezo actuator, the command syntax remains logically consistent. Think of C-990
The C-990.CD1 installs the GCS DLLs that act as translators. Your computer sends a high-level command (e.g., "MOV 1 50"), and the suite handles the RS-232, USB, TCP/IP, or GPIB translation to the controller.
This is the most crucial component. The PI_GCS_DLL (usually version 2.x or 3.x on the C-990.CD1) provides a high-level API for communicating with PI controllers over RS-232, USB, or GPIB. It abstracts complex command strings into simple function calls like PI_MOV or PI_SVO.
The original PI Software Suite C-990.CD1 was authored between 1998 and 2005. It expects a 32-bit operating system and relies on setup.exe installers that may fail on 64-bit Windows 10/11.