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Terminate unconnected output port

  • Library:
  • Simulink / Commonly Used Blocks

    Simulink / Sinks

    HDL Coder / Sinks

  • Terminator block


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.



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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.

Data Types: single | double | half | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | string | Boolean | fixed point | enumerated | bus | image

Block Characteristics

Data Types

Boolean | bus | double | enumerated | fixed point | half | integer | single | string

Direct Feedthrough


Multidimensional Signals


Variable-Size Signals


Zero-Crossing Detection


Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® 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