Stop
This function block is used to finish a sequence control. It is a special form of the Step function block.
A token that comes to a Stop block cannot be transferred to another block. Only by a preset the Stop block can lose a token at runtime. With the Preset function block the flow control is set to a predefined state and so a token will be detracted from every step, including a Stop block.
The function block has the input SI and the output SM. The output SM is a BIT data type. It shows if this block has a token or not. SI has to be connected with a transition. Over this transition the token will be transferred to this block.
For general information about sequence function and its realization see introduction.
Signals
| Name | I/O | Type(s) | Function |
|---|---|---|---|
| SI | I | TOSTEP | Sequence input |
| SM | O | BIT | State (token) |
Visualization
If this function block is currently active, the symbol will be depicted in green.
Comment
All flow controls within a structure block are part of the same flow control net. A macro block can be a part of a flow control. For connecting a macro with a flow control block, use the connectors of type TOTRANS or TOSTEP.