Goto, OUTSTD – Signal source or output

Block SymbolsLicensing group: STANDARD
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Function Description
The two blocks Goto (signal source) and OUTSTD (standard output) share the same symbol. They are used for providing signals, either internal or external.

The Goto block can be used in both the REX control system and the Matlab-Simulink environment, the OUTSTD block exists only in the REX control system.

The following rules define how the RexComp compiler distinguishes between the two block types:

The other parameter of the Goto block defines the visibility of the block within the given .mdl file. The TagVisibility parameter can be local, global or scoped, whose meaning is explained in the table below. This parameter is ignored if the block is compiled as the OUTSTD block.

There is no OUTSTD block in the Matlab-Simulink system, even the blocks whose GotoTag parameter contains the __ delimiter are considered to be of the Goto type. This property is suitable for simulation of both the control system and the controlled system. The model can be connected via From and Goto blocks, whose GotoTag parameters include the __ delimiter. Moreover, it is possible to use one .mdl file for both simulation and real time control without any modifications if the controlled system model is "hidden" in a subsystem whose name starts with Simulation. The RexComp compiler ignores (omits) such subsystems. For further details see [2].

Input

value

Signal going to I/O driver or From block. In case of connection to an I/O driver, the type of input is determined by the I/O driver from the GotoTag parameter.

unknown

Parameters

GotoTag

Reference to a From block with the same GotoTag parameter, which should be connected with the Goto block or a reference to output signal of the REX control system driver, which should send the data from block input to the process.

string

TagVisibility

Visibility (availability) of the block within the .mdl file. Defines conditions under which the two corresponding Goto and From blocks are reciprocally available:  local

string

local 

the two blocks must be in the same subsystem

global 

blocks can be anywhere in the given .mdl file

scoped 

the From block must be placed in the same subsystem or in any lower hierarchical level below the GotoTagVisibility block with the same GotoTag parameter