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.

Multiple function blocks can be indicated and manipulated as a single function block on HMI using the faceplate blocks.

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.