Terminator

R2026b

Terminate unconnected output port

Libraries:
Simulink / Commonly Used Blocks
Simulink / Sinks
HDL Coder / Sinks

Description

Use the Terminator block to cap blocks whose output ports do not connect to other blocks. If you run a simulation with blocks having unconnected output ports, Simulink^® issues warning messages. Using Terminator blocks to cap those blocks helps prevent warning messages.

Examples

Simulation of Bouncing Ball

Uses two models of a bouncing ball to show different approaches to modeling hybrid dynamic systems with Zeno behavior. Zeno behavior is informally characterized by an infinite number of events occurring in a finite time interval for certain hybrid systems. As the ball loses energy, the ball collides with the ground in successively smaller intervals of time.

Open Model

Model Fault-Tolerant Fuel Control System

Combine Stateflow® and Simulink® capabilities to model hybrid systems. This type of modeling is useful for systems that have many possible operational modes based on discrete events. Simulink handles traditional signal flow while Stateflow implements changes in control configuration. This example describes a fuel control system for a gasoline engine. The system is robust because it detects individual sensor failures, and dynamically reconfigures the control system for uninterrupted operation.

Open Model

Simulate Motion in Six Degrees of Freedom (6DOF)

Model six degrees of freedom (6DOF) motion in Simulink® using the 6DOF (Euler Angles) (Aerospace Blockset) or 6DOF (Quaternion) (Aerospace Blockset) blocks. The model replicates the motions experienced by an object or vehicle, including three axes of rotation (pitch, roll, and yaw) and three axes of translation.

Open Script

Ports

Input

expand all

Port_1 — Input signal
scalar | vector | matrix | n-D array | bus

Use this port to direct signals from output ports that are otherwise unconnected during a simulation. The port accepts real or complex signals of all data types.

Block Characteristics

Data Types	`Boolean` \| `bus` \| `datetime` \| `double` \| `enumerated` \| `fixed point` \| `half` \| `image` \| `integer` \| `single` \| `string`
Direct Feedthrough	`no`
Multidimensional Signals	`yes`
Variable-Size Signals	`no`
Zero-Crossing Detection	`no`

Extended Capabilities

expand all

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

HDL Code Generation
Generate VHDL, Verilog and SystemVerilog code for FPGA and ASIC designs using HDL Coder™.

HDL Coder™ provides additional configuration options that affect HDL implementation and synthesized logic.

HDL Architecture

Architecture	Description
`No HDL`	Do not generate HDL code for this block.

HDL Block Properties

PreserveUpstreamLogic

Control the removal of unconnected logic. The default is off, which means unconnected logic is not preserved in HDL code. For more details, see PreserveUpstreamLogic (HDL Coder).

PLC Code Generation
Generate Structured Text code using Simulink® PLC Coder™.

Fixed-Point Conversion
Design and simulate fixed-point systems using Fixed-Point Designer™.

Version History

Introduced before R2006a

expand all

R2026b: Terminator block supports DateTime data type

The Terminator block now supports the DateTime data type. For more information, see Simulink DateTime.

Terminator

Description

Examples

Simulation of Bouncing Ball

Model Fault-Tolerant Fuel Control System

Simulate Motion in Six Degrees of Freedom (6DOF)

Ports

Input

Port_1 — Input signal
scalar | vector | matrix | n-D array | bus

Block Characteristics

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

HDL Code Generation
Generate VHDL, Verilog and SystemVerilog code for FPGA and ASIC designs using HDL Coder™.

PLC Code Generation
Generate Structured Text code using Simulink® PLC Coder™.

Fixed-Point Conversion
Design and simulate fixed-point systems using Fixed-Point Designer™.

Version History

R2026b: Terminator block supports DateTime data type

See Also

Topics

Terminator

Description

Examples

Simulation of Bouncing Ball

Model Fault-Tolerant Fuel Control System

Simulate Motion in Six Degrees of Freedom (6DOF)

Ports

Input

Port_1 — Input signal scalar | vector | matrix | n-D array | bus

Block Characteristics

Extended Capabilities

C/C++ Code Generation Generate C and C++ code using Simulink® Coder™.

HDL Code Generation Generate VHDL, Verilog and SystemVerilog code for FPGA and ASIC designs using HDL Coder™.

PLC Code Generation Generate Structured Text code using Simulink® PLC Coder™.

Fixed-Point Conversion Design and simulate fixed-point systems using Fixed-Point Designer™.

Version History

R2026b: Terminator block supports DateTime data type

See Also

Topics

Port_1 — Input signal
scalar | vector | matrix | n-D array | bus

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

HDL Code Generation
Generate VHDL, Verilog and SystemVerilog code for FPGA and ASIC designs using HDL Coder™.

PLC Code Generation
Generate Structured Text code using Simulink® PLC Coder™.

Fixed-Point Conversion
Design and simulate fixed-point systems using Fixed-Point Designer™.