The Commander C355 advanced process controller was launched in November 1998. It enabled control of a single PID loop using a number of control strategies (for example, single loop, feedforward and cascade control). The C355 was available with a comprehensive I/O capability, math & logic equations and profile control together with other software features.
In September 2010, the C355 was superseded by the ControlMaster CM30 universal process controller. The CM30 uses ABB’s common instrumentation platform HMI and features a new, full color TFT display enabling both control loops in the new dual control template to be displayed simultaneously in a single operator view. The CM30 also features ethernet communications, profile control and bank control functionality as well as the features previously available on the C355. All features are accessible via the front panel of the controller without the need for PC configuration software.