Regulatory Control Blocks perform computations based on process values for process monitoring and control, and include PID controllers, input indicators, manual loaders, signal selectors, signal setters, and self-tuning controllers.

Sequence control blocks are used to implement general-purpose sequences at the loop equipment level, such as safety interlock sequences and process monitoring sequences. The blocks are coded in decision table format and logic chart format using logical operators. Switch instrument, timer, counter, code input/output, and various other blocks are prepared as sequence auxiliary blocks.

Calculation blocks assist regulatory and sequence control functions, and perform general-purpose calculations on analog signals and contact (logic) signals.

SFC blocks are written using SFC description language. SFC blocks conform to IEC standards, and use an open language for sequence control like a flow chart. The operation phase can be displayed visually, which is ideal for operation phase management. For detailed description of unit sequence control, Sequence and Batch Oriented Language (SEBOL) can be used as the sequence language.

Analog Type
For a control loop formed with multiple function blocks, the main control variables such as measured process variable, set-point value and manipulated output value of the function blocks in the entire loop can be assigned to one faceplate block so as to control the whole loop by operating and monitoring the single faceplate block.

Sequence Type
For a control scheme formed with multiple push buttons, the main buttons in the whole scheme can be assigned to one faceplate block so as to manipulate the whole scheme by operating and monitoring the single faceplate block.

Hybrid Type
Combination of analog type and sequence type, so that a control scheme formed with multiple function blocks and push buttons can be applied to a single faceplate block.