SubSystem – Subsystem block

Block SymbolLicensing group: STANDARD
PIC

Function Description
The Subsystem block is a cornerstone of hierarchical control (and simulation) algorithm. It allows embedding a subsystem into another system (or subsystem). The subsystem contains blocks and their connections. The subsystem is executed as ordered sequence of blocks during real-time operation of the REX control system. Therefore it is sometimes referred to as sequence. All blocks from the surroundings of the subsystem are executed strictly before or after the whole subsystem is executed. This is called atomic subsystem in the Matlab-Simulink terminology, see [3].

There are two possible ways of creating a subsystem in both the RexDraw program and the Matlab-Simulink editor (only the RexDraw technique is described further):

Inputs
The number and names of the inputs are given by the number and names of the Inport blocks contained within the subsystem.

Outputs
The number and names of the outputs are given by the number and names of the Outport blocks contained within the subsystem.