This integration type block allows to apply optimization and other data mining techniques to SolidWorks parts and assemblies.


The SolidWorks block enables integrating SolidWorks models and SolidWorks Simulation static studies into your workflows. The block maps model or study properties to its input and output ports so they can be changed and read by pSeven. When this block runs, it receives values to input ports, changes model dimensions and global variables, rebuilds the model, recalculates mass properties, and sends resulting values to output ports. Optionally it can also save the changed model to disk or export it to a specified format. For models with added static studies, it can change restraints of a study and send its results to output ports.

Note that when the SolidWorks block executes, it actually launches SolidWorks, so the block can run only on a Windows host (since there is no SolidWorks version for Linux). Nevertheless, you can configure this block even when pSeven is running under Linux. Document tree exploration will be unavailable, since it requires starting SolidWorks; however, the tree can be built under Windows and saved to the block. Then, if you save the workflow and move your project to a Linux host, pSeven for Linux can use document information saved by the block.

The SolidWorks block launches the SolidWorks application in the following cases:

  • when you select a document file (in order to look for document references),
  • when you open the selected document from the block configuration dialog,
  • when you get information from the document (build the document tree), and
  • when actually rebuilding the model or running the study (at the workflow run-time).

If SolidWorks is already launched, the block connects to the running application. If a document with the same name is already open in SolidWorks, the block uses this document. This way you can work with the same model in SolidWorks and pSeven simultaneously.


To run, the SolidWorks block requires SolidWorks installed. The block was tested with SolidWorks 2018 SP 2.0, SolidWorks 2016 x64 SP0.1, and SolidWorks 2014 x64 SP3.0; other versions are also compatible, but were not actively tested.

Prior to pSeven 6.0 Release Candidate 1, global variables with assigned units of measurement (for example, x = 5mm) were interpreted as read-only and could be mapped only to output ports. pSeven 6.0 Release Candidate 1 added the support for mapping such variables to input ports too. However, it works only if using SolidWorks 2015 or later due to a bug in earlier versions of SolidWorks.

Files Configuration

Document and export files in the SolidWorks block are configured using the common Configure file dialog. Refer to the File block documentation when you need specific details.


Document File

To select a SolidWorks document, click b_browse in the Document tree pane. Note that some of the possible file configurations are invalid:

  • The document cannot be a file of the project or sandbox origin with initial data.
  • The document cannot be a file of the temporary origin.

The block supports SolidWorks parts (.sldprt), assemblies (.sldasm) and ZIP archives (.zip). Note that to load a document which references other files, you first have to prepare a ZIP archive containing all dependencies using the Pack and Go function (File ‣ Pack and Go in the SolidWorks menu).

Export File

To select an export file, click b_browse in the Export file pane. Note that the export file cannot contain initial data.

The block supports export to the STEP (.step), IGES (.igs), STL (.stl), ACIS (.sat), and Parasolid (.x_t) formats. The document file can also be saved as a ZIP archive which will contain all referenced files, similarly to the archive obtained using Pack and Go in SolidWorks.

Document Tree

After you select a SolidWorks document, click b_build_tree in the Document tree pane to build the tree. The block will parse model structure in the document file and select properties which can be changed or read in the workflow. The properties which the block adds to its tree are:

  • Model dimensions — for example, extrudes, revolves, holes, and other.
  • Global variables — for example, plate height, plate width and other parameters.
  • Mass properties — such as the model mass, volume, surface area and other properties.
  • Model views — front, top, bottom, right, and so on.
  • Static study restraints — for example, fixed, immovable, symmetry restraints, and so on.
  • Results — such as stress, strain, displacement, and so on.

Collected properties are grouped as shown in the tree in the Document tree pane. Note that the structure of this tree partially resembles the SolidWorks model tree, but it can skip some nodes (usually nonparametric) which cannot be used in a workflow. For a full description of the tree structure created by the block, see section Structure.


In the tree you can select nodes that will be mapped to input and output ports. When you select a node, a new corresponding variable appears in the Variables list. The Ports column in this list shows which ports (input, output, or both) are created for the corresponding tree node.

The nodes in the views list are special. They allow to export model standard and named views as images in .png format. When you map such node, an output File port is created. If you set up monitoring for this port, the images will be saved in the project database during the workflow run, so you can display them with Page viewer on the Analyze screen.


The SolidWorks block can work with dimensions of parts and assemblies (including contained subassemblies and parts), mass properties of any component in different configurations, global variables, model views, static study restraints and results. The document tree structure is as follows:

  • Dimensions — lists all parts and assemblies, their features, and features’ dimensions.
    • part name (for each part or assembly)
      • feature name (for each part’s feature)
        • dimension
        • dimension
  • Global variables — a flat list of global variables.
    • variable
    • variable
  • Mass properties — lists mass properties for all document configurations.
    • configuration name (for each available configuration)
      • component name (for each component in this configuration)
        • mass
        • volume
        • area
        • Other properties: center of mass coordinates, moments of inertia.
  • Views — a flat list of model views (standard and user-created).
    • view name
    • view name
  • Simulations — lists restraints and results for simulation studies. Note that the block supports static studies only.
    • Restraints — static studies’ restraints.
      • study name (for each study)
        • restraint
          • restraint’s property
          • restraint’s property
        • another restraint
          • property
    • Results — study results.
      • study name (for each study)
        • Stress — calculated values of element and node stress.
          • Elements — element stress values.
            • Minimum — minimum stress.
              • details…
            • Maximum — maximum stress.
              • details…
          • Nodes — node stress values.
            • Minimum — minimum stress.
              • details…
            • Maximum — maximum stress.
              • details…
        • Strain — calculated values of element and node strain. Same subtree structure as in Stress: elements and nodes, minimum and maximum strain.
        • Displacement — calculated values of element and node displacement. Same subtree structure as in Stress.

Note that all values are taken from the configuration that was selected active in the document, except mass properties values that are available for all configurations. Moments of inertia in mass properties are calculated at the center of mass and aligned with the output coordinate system.

Node Properties

Hovering a document tree node shows a tooltip with node’s properties: type, value and read-only state.


Most dimensions, global variables, mass properties, restraints and results are of the RealScalar type, but some dimensions are IntScalar, views are of the File type. When you select a node in the document tree, it is mapped to a port of this type.


Dimensional values that the block reads from and writes to ports are in SI units regardless of the document units. One notable exception is a global variable with assigned units of measurement: values of such variables are parsed directly from the equation (variable declaration). For example, the output value of a global variable “x” set by equation x = 5mm will be 5 (assigned units — millimeters), not 0.005 (SI meters). Likewise, if the value of “x” is changed to 10, the new equation will be: x = 10mm.


If you select a read-only node in the document tree, it is always mapped to an output port. Writeable nodes are mapped to input ports by default.

Read-only nodes are:

  • mass properties,
  • static study results,
  • driven dimensions, and
  • global variables defined by equations (for example: x = x1 + 2, x = 2m + 5mm).
  • views

Note that if you map a read-only node (for example, “mass”) to an input port, a validation warning will appear in the Issues pane:

"mass" is read-only but mapped to input port.

The block can also raise this error at the run-time.


Consider as failure

When to consider model rebuild as failed.

Value:errors, errors or warnings
Default:errors or warnings

After rebuilding a part or an assembly, the block checks SolidWorks’ What’s Wrong. Any error present in What’s Wrong is always considered as a failure to rebuild. In addition, when Consider as failure is errors or warnings, warnings are also treated as a failure. The Error handling behavior option controls block’s further actions in case of failure.

Error handling behavior

The action to perform if the block encounters an error.

Value:stop workflow, output defaults and signal, output signal only
Default:stop workflow

When set to stop workflow, the block simply reports an error and the workflow interrupts.

If set to output defaults and signal, the block suppresses the error. Output ports in this case send values assigned to them (the defaults), and the done port outputs a False value (the signal). Note that the block automatically assigns values to output ports that are created when you select document tree nodes. The values are:

The output signal only behavior means to output only the False value to done; nothing is output to other ports.


Specifies the STEP version number for files exported as STEP.

Value:AP203, AP214
Max steps

The maximum number of block startups that can use the same SolidWorks application instance.

Value:positive integer

Normally, the SolidWorks application started by the block is not closed after the block finishes (that is, until the workflow stops). Subsequent startups of the block use the same application instance to save time. However, each next model rebuild in SolidWorks can take more time; due to this it can be useful to restart the application sometimes. This option sets the number of block startups that are allowed to use the same running SolidWorks instance. When the limit is reached, SolidWorks is restarted.

This option works only when SolidWorks is started by the block. If the block connects to an instance of SolidWorks that you have started manually, this instance is never restarted.

SolidWorks executable path

Full path to the SolidWorks executable (SLDWORKS.exe).


By default, the block determines the path to SolidWorks automatically. This option can be used to override the automatically found path. If specified, it also overrides the Version option.

SolidWorks wait timeout

The time in seconds to wait for the SolidWorks application to become available in case it is currently used by another SolidWorks block.

Value:positive integer

Several SolidWorks blocks in a workflow can start simultaneously — this is typically the case when there is a parallel Composite block containing SolidWorks blocks. In this case, only one of the SolidWorks blocks can connect to the SolidWorks application at a time (this is a SolidWorks limitation). Other blocks have to wait until SolidWorks becomes available, and will do so until the timeout is exceeded.

Exceeding the timeout raises an error which always stops the workflow. That is, the timeout error is never suppressed regardless of the Error handling behavior setting. The workflow is not terminated immediately: all blocks that are currently running continue their execution, and the workflow stops after they finish (soft stop). Note that setting the timeout to 0 will always trigger workflow stop if a SolidWorks block with zero timeout starts while there is another SolidWorks block running. The running block will be allowed to finish execution in this case, and the workflow will be stopped by the timeout error from the second block.


The SolidWorks version to use.

Value:latest, 2012, 2013, 2014, 2015, 2016

Changed in version 6.5: SolidWorks 2015 support.

Changed in version 6.7: SolidWorks 2016 support.

This option allows to choose the version to use if several versions of SolidWorks are installed.


Show the SolidWorks application window during run-time calculations.

Default:True (show the window)

If False, SolidWorks will be run in the background without showing a window. This option affects only the run-time. When you configure the block (build a document tree), SolidWorks is always launched in the background without showing a window.


If the SolidWorks block does not work properly, verify that:

If the problem is not related to the above issues or fixing them does not help, please contact