Mapping Data Elements

You can allocate data elements to system signals through buses, wires, generic wires, or gateways.

Notes:
  • With the Electrical, Electronics and Software Architect (ELAET) and Electrical and Control Architect (EEWCI) roles, you can work with VLANs.
  • With the Avionics Architect (AVARA) role, you can work with virtual links.
Note: In an Ethernet network, data elements cannot be allocated to physical segments. Consequently, when a premapping or mapping of a data element can be created, depending on the domain, VLANs or virtual links replace the physical segments in the list of bus channels. These VLANs or virtual links can transport the data element.

This task shows you how to:

Before you begin: Create a system mapping. For more information, see Create System Mapping.
See Also
About Communication Protocol Standards

Allocate Ports

You can allocate ports to channels.

  1. Right-click the Data Allocations node and select Allocate Ports .

    The multistep workflow guides you through the process.

  2. In the Software step of the workflow, select a software component, such as a software architecture, atomic software component, application, or partition.
  3. In the Port step of the workflow, select a port and click Next step .
  4. Optional: In the Variable step of the workflow, select a data element.
  5. Click Next step .
  6. To allocate a port to a channel, in the Preallocation/Allocation step of the workflow, you have the following possibilities:
    PurposeProcedure

    An allocation of port on a bus signal or on a wire

    1. Select Create allocation on signal.

    2. Select Choose system signal by selecting bus or wire mappings and click Next step .

    3. In the Channel/Signal step of the workflow, select one of the following:
      • Bus, a bus, a matrix, and a bus signal.
      • Shared Virtual Link, a shared virtual link, a matrix, and a bus signal.
      • Wire, a wire, and optionally a system signal.
        Note: For a generic wire, select a subport producer and a subport consumer.

    An allocation of port on a system signal

    1. Select Create allocation on signal and click Next step .

    2. In the Channel/Signal step of the workflow, select a system signal.

    A preallocation

    1. Select Create preallocation and click Next step .

    2. In the Channel/Signal step of the workflow, select one of the following:
      • A channel.
      • Preallocate on multiple channels, then for each channel: select a channel and click .
    Note: You can assign a signal later using the Select Signal command.
  7. To complete the allocation, you can either:
    OptionDescription
    Click OK. A premapping or a data mapping is created and it appears in the Data Allocations node.
    Click Create and New. Creates and validates the current allocation, and lets you create another allocation from Step 2.
  8. Optional: To add attributes to a data mapping, right-click a data mapping, and then select Create Attribute or Create Attributes from Template .

    For more information, see Creating Attributes.

    The attributes appear under the data mapping.

Allocate Connections

You can allocate connections to channels.

  1. Right-click the Data Allocations node and select Allocate Connections .

    The multistep workflow guides you through the process.

  2. In the Connection step of the workflow:
    1. Select a software connection.
    2. Select the producer and the consumer of the connection.
    3. Click Next step .
  3. Optional: In the Variable step of the workflow, select a data element producer and a data element consumer.
  4. Click Next step .
  5. To allocate a connection to a channel, in the Preallocation/Allocation step of the workflow, you have the following possibilities:
    PurposeProcedure

    An allocation of connection on a bus signal or on a wire

    1. Select Create allocation on signal.

    2. Select Choose system signal by selecting bus or wire mappings and click Next step .

    3. In the Channel/Signal step of the workflow, select one of the following:
      • Bus, a bus, a matrix, and a bus signal.
      • Wire, a wire, and optionally a system signal.
        Note: For a generic wire, select a subport producer and a subport consumer.
      • Use gateway and define the gateway:
        1. For the first port of the connection, select either a bus or a wire with the resultant details.

        2. Select an EE component instance as the gateway and click Next step .

        3. For the second port of the connection, select either a bus or a wire with the resultant details.

    An allocation of connection on a system signal

    1. Select Create allocation on signal and click Next step .

    2. In the Channel/Signal step of the workflow, select a system signal.

    A preallocation

    1. Select Create preallocation and click Next step .

    2. In the Channel/Signal step of the workflow, select one of the following:
      • A channel.
      • Preallocate on multiple channels, then for each channel: Select a channel and click .
    Note: You can assign a signal later using the Select Signal command.
  6. To complete the allocation, you can either:
    OptionDescription
    Click OK. A premapping or a data mapping is created and it appears in the Data Allocations node.
    Click Create and New. Creates and validates the current allocation, and lets you create another allocation from Step 2.
  7. Optional: To add attributes to a data mapping, right-click a data mapping, and then select Create Attribute or Create Attributes from Template .

    For more information, see Creating Attributes.

    The attributes appear under the data mapping.