Accept input from Goto block
Simulink / Signal Routing
HDL Coder / Signal Routing
The From block accepts a signal from a corresponding Goto block, then passes it as output. The data type of the output is the same as that of the input from the Goto block. From and Goto blocks allow you to pass a signal from one block to another without actually connecting them. To associate a Goto block with a From block, enter the Goto block's tag in the Goto Tag parameter.
A From block can receive its signal from only one Goto block, although a Goto block can pass its signal to more than one From block.
This figure shows that using a Goto block and a From block is equivalent to connecting the blocks to which those blocks are connected. In the model at the left, Block1 passes a signal to Block2. That model is equivalent to the model at the right, which connects Block1 to the Goto block, passes that signal to the From block, then on to Block2.
The visibility of a Goto block tag determines the From blocks that can receive its signal. For more information, see Goto and Goto Tag Visibility. The block indicates the visibility of the Goto block tag:
A local tag name is enclosed in brackets (
A scoped tag name is enclosed in braces (
A global tag name appears without additional characters.
The From block supports signal label propagation.
Port_1— Signal from connected Goto block
Signal from connected Goto block, output with the same dimensions and data type as the input to the Goto block.
fixed point |
Goto Tag— Tag of the Goto block that forwards its signal to this block
<More Tags...>| ...
Specify the tag of the Goto block that forwards its signal to this From block. To change the tag, select a new tag from the drop-down list.
The drop-down list displays the Goto tags that the
From block can currently see. An item labeled
<More Tags...> appears at the end of the list the
first time you display the list in a Simulink® session. Selecting this item causes the block to update the
tags list to include the tags of Goto blocks residing in
library subsystems referenced by the model containing this
From block. Simulink software displays a progress bar while building the list of
library tags. Simulink saves the updated tags list for the duration of the
Simulink session or until the next time you select the adjacent
Update Tags button. You need to update the tags
list again in the current session only if the libraries referenced by the
model have changed since the last time you updated the list.
If you use multiple From and Goto Tag Visibility blocks to refer to the same Goto tag, you can simultaneously rename the tag in all of the blocks. To do so, use the Rename All button in the Goto block dialog box.
To find the relevant Goto block, use the Goto Source hyperlink in the From block dialog box.
|Type: character vector|
Update Tags— Update list of visible tags
Updates the list of tags visible to this From block, including tags residing in libraries referenced by the model containing this From block. Update the tags list again in the current session only if the libraries referenced by the model have changed since the last time you updated the list.
Goto Source— Path to connected Goto block
Path of the Goto block connected to this From block. Clicking the path displays and highlights the Goto block in your model.
Icon Display— Text to display on block icon
Tag and signal name|
Specifies the text to display on the From block icon. The options are the block tag, the name of the signal that the block represents, or both the tag and the signal name.
|Type: character vector|
For more information on HDL code generation, see From.