Simulation cannot be started because there is already an online connection to a device
Issue: When launching Vijeo Designer Runtime simulation mode, the project starts to validate and build, but the runtime simulation window does not open. Show
Product Line: When Vijeo Designer Runtime Simulation cannot start, it is possible that a system file is missing. In one situation, the "ewfapi.dll" file can be missing. When this file does not exist, the runtime simulation will not start. To resolve this, please copy the file "ewfapi.dll" from "C:\Program Files\Schneider Electric\Vijeo-Designer\Vijeo-Frame\" to "C:\Program Files\Schneider Electric\Vijeo-Designer\Vijeo-Runtime\public\bin" Possible Cause #2:Another possibility is that your application has a validation error or build error that you cannot see because feedback zone window is hidden. Be sure to check that you can see the results of the feedback zone. Press Shift+F6 to bring the window back up if it is missing. Possible Cause #3:A third possibility is that you have the Limited Edition version of Vijeo Designer installed. This version restricts the use of Simulation and Download to only the HMISTU and HMISTO target families. To check if you have Limited Edition, goto Help->About. If the general tab indicates Limited Edition, you will not be able to use Simulation for any model other than the HMISTU or HMISTO. Please uninstall this version and install Vijeo Designer full (licensed copy). Possible Cause #4:A fourth possibility is that the process "Koohi.exe" is stuck in the Windows Task manager. Try to manually end this task in the Windows Task Manager and start the Simulation again. If the problem still persists, please contact Schneider Electric Technical Support: Published on:2/10/2016Last Modified on:3/7/2022
This page describes how to simulate a change to an allow policy using Policy Simulator. It also explains how to interpret the results of the simulation, and how to apply the simulated allow policy if you so choose. Before you begin
Required permissionsBefore you simulate a change to an allow policy, you need to make sure you have the appropriate permissions. Certain permissions are required to run a simulation; others are not required, but help you get the most complete results from the simulation. To learn more about Identity and Access Management (IAM) roles, see Understanding roles. Required target resource permissionsThe target resource of the simulation is the resource whose allow policies you're simulating. To get the permissions that you need to run a simulation, ask your administrator to grant you the following IAM roles on the target resource:
For more information about granting roles, see Manage access. These predefined roles contain the permissions required to run a simulation. To see the exact permissions that are required, expand the Required permissions section: Required permissions
You might also be able to get these permissions with custom roles or other predefined roles. Required host resource permissionsThe host resource of a simulation is the project, folder, or organization that creates and runs the simulation. The host resource does not need to be related to the target resource in any way. The way you set the host resource depends on the platform you're using. The host resource is the project, folder, or organization that appears in the resource
selector.
To change the host resource, choose a different project, folder, or organization in the resource selector. gcloudThe host resource is the current quota project. To set the quota
project, use the RESTYou manually specify the host resource each time you send a request. See Simulating a policy change on this page for details. To get the
permissions that you need to run a simulation, ask your administrator to grant you the Simulator Admin ( This predefined role contains the permissions required to run a simulation. To see the exact permissions that are required, expand the Required permissions section: Required permissions
You might also be able to get these permissions with custom roles or other predefined roles. Recommended permissionsTo get the most complete results from a simulation, we recommend that you have certain IAM and Google Workspace permissions. If you don't have some or all of these permissions, you can still run a simulation. However, running a simulation without these permissions could result in an increased number of unknown access changes, because you might not be able to retrieve information that could impact the results of the simulation. Recommended IAM permissionsWe recommend that you have the Security Reviewer role ( These roles give you the following permissions, which help you get the most complete results from the simulation:
Recommended Google Workspace permissionsWe recommend that you have permission to retrieve group membership information for each Google group in the original allow policy and the proposed allow policy. Google Workspace Super Admins and Group Admins typically have access to
view group membership. If you are not a Super Admin or Group Admin, ask your Google Workspace administrator to create a custom Google Workspace administrator role that contains the Simulate a policy changeSimulate a change to an allow policy by following these steps. The following example demonstrates how to simulate a change to an allow policy
for a project. However, you can simulate a change to an allow policy for any resource that has an allow policy. Edit a principal's permissions, then, instead of clicking Save, click Test changes: In the Google Cloud console, go to the IAM page. Go to the IAM page Create a proposed change to the allow policy by editing an existing principal's permissions: To simulate the proposed change, click Test changes. After several minutes, the Google Cloud console will display the results of the simulation as a list of access changes. See Understanding Policy Simulator results on this page for more information.
If there was no change in access between the existing allow policy and the simulated allow policy, the Google Cloud console will not display any access changes. gcloud CLITo simulate a change to an allow policy, follow the read-modify-write pattern, but simulate the allow policy instead of writing it.
RESTTo simulate a change to an allow policy, follow the read-modify-write pattern, but instead of writing the allow policy, create and run a simulation.
Understand Policy Simulator resultsPolicy Simulator reports the impact of a proposed change to an allow policy as a list of access changes. Each access change represents an access attempt from the last 90 days that would have a different outcome under the proposed allow policy than under the current allow policy. Policy Simulator also lists any errors that occurred during the simulation, which helps you identify potential gaps in the simulation. The presentation of these changes and errors depends on the platform you're using. The Policy Simulator results page displays the results of
the simulation in several different sections: Policy changes: This section lists the resource whose allow policy you're proposing changes for, the roles that you're proposing to remove, and the roles that you're proposing to add.
This section also contains a View policy diff button. If you click this button, you can view what the resource's allow policy looks like before and after the proposed changes.
Permission changes: This section contains counts of removed and added permissions, which describe how the principal's permissions would change if you applied the proposed changes. These permission counts are calculated by comparing the permissions in the principal's current roles with the permissions in the principal's proposed roles, ignoring inherited roles.
This section also contains a View permission diff button. If you click this button, you can view a side-by-side comparison of the permissions in the principal's current and proposed roles.
Access changes over the past 90 days: This section shows which access attempts from the last 90 days have different results under the proposed allow policy and the current allow policy. This section includes both a summary of the access changes, and a table with more detailed results. The summary of access changes lists the number of each type of access change, the number of errors and unknown results, and the number of access attempts that have the same result under the proposed allow policy and the current allow policy. The summary also shows how many permissions could not be simulated. For more information, see Errors on this page.
This section also contains a table of access changes. This table lists each access attempt from the past 90 days that has a different result under the proposed allow policy and under the current allow policy. Each entry includes the resource that the principal was trying to access, the date of the request, the principal making the request, the permission in the request, and the access status under the proposed allow policy as compared to the access status under the current allow policy.
There are several different types of access changes:
To view additional details about an access change, click on the access change. This opens the Access change details panel, which displays additional information about the access change, including the principal's existing access, the principal's proposed access, and additional details about the access change result.
gcloud CLIWhen you use the Each replay result describes an access attempt whose result would have been different if the proposed allow policy had been in place at the time of the attempt. For example, the following replay result shows that { "accessTuple": { "fullResourceName": "//cloudresourcemanager.googleapis.com/projects/my-project", "permission": "resourcemanager.projects.update", "principal": "" }, "lastSeenDate": { "day": 15, "month": 1, "year": 2021 }, "diff": { "accessDiff": { "baseline": { "accessState": "GRANTED" }, "simulated": { "accessState": "NOT_GRANTED" }, "accessChange": "ACCESS_REVOKED" } } } Each replay result has the following fields:
Each access diff has the following components:
RESTWhen you call the Each replay result describes an access attempt whose result would have been different if the proposed allow policy had been in place at the time of the attempt. For
example, the following replay result shows that { "accessTuple": { "fullResourceName": "//cloudresourcemanager.googleapis.com/projects/my-project", "permission": "resourcemanager.projects.update", "principal": "" }, "lastSeenDate": { "day": 15, "month": 1, "year": 2021 }, "diff": { "accessDiff": { "baseline": { "accessState": "GRANTED" }, "simulated": { "accessState": "NOT_GRANTED" }, "accessChange": "ACCESS_REVOKED" } } } Each replay result has the following fields:
Each access diff has the following components:
Unknown resultsIf an access result is unknown, it means that Policy Simulator did not have enough information to fully evaluate the access attempt. If an access result is unknown, the access change details panel reports the reason it was unknown, plus the specific roles, allow policies, group memberships, and conditions it was unable to access or evaluate. There are several reasons that a result can be unknown: In the gcloud CLI, the simulation results will report the reason that the result is unknown
in the access diff. The reason that the access result is unknown will be one of the following: To learn what information was missing, see the error information following the reported access state. If the result is unknown, the field for
the allow policy ( In the REST API, the simulation results will report the reason that the result is unknown in the access diff. The reason that the access result is unknown will be one of the following:
If the result is unknown, the field for the allow policy ( ErrorsPolicy Simulator also reports any errors that occurred during the simulation. It's important to review these errors so that you understand the potential gaps in the simulation. There are several types of errors that Policy Simulator might report: Operation errors: The simulation could not be run. Policy Simulator reports operation errors at the top of the results page. If the error message states the simulation could not be run because there are
too many logs in your project or organization, then you cannot run a simulation on the resource.
If you get this error for another reason, try running the simulation again. If you still cannot run the simulation, contact . Replay errors: A replay of a single access attempt was unsuccessful, so Policy Simulator could not determine if the result of the access attempt would change under the proposed allow policy. The Google Cloud console lists replay errors in the Access changes over the past 90 days table. The Access change details panel for each error includes an error message to help you understand the issue, as well as the resource and permission that were being simulated when the error occurred.
Unsupported resource type errors: The proposed allow policy affects permissions associated with an unsupported resource type, which Policy Simulator cannot simulate.
Policy Simulator lists these permissions in the simulation results so that you know which permissions it was unable to simulate.
gcloud CLIIn the gcloud CLI's simulation results, errors can appear in two places:
Policy Simulator generates the following types of errors:
RESTIn REST API simulation results, errors can appear in two places:
Policy Simulator generates the following types of errors:
Apply a simulated policy changeTo apply a simulated change to an allow policy, follow these steps: Click Apply
proposed changes. In the confirmation dialog, click Apply to confirm the change. Use the Provide the following values: The response contains the updated allow policy. If you treat IAM allow policies as
code and store them in a version-control system, you should store the allow policy that the gcloud CLI returns, not the JSON file that contains the simulated allow policy. Set the proposed allow policy as the resource's new allow policy. To set the allow policy in the request as the
project's new allow policy, use the Resource Manager API's Before using any of the request data, make the following replacements: HTTP method and URL: Request JSON body: To send your request, expand one of these options: Save the request body in a file called Save the request body in a file called Invoke-WebRequest ` Copy the request body and open the method reference page. The API Explorer panel opens on the
right side of the page. You can interact with this tool to send requests. Paste the request body in this tool, complete any other required fields, and click Execute. The response contains the updated allow policy. Save simulation resultsIf you are using the gcloud CLI, you can save Policy Simulator results as JSON, YAML, or CSV files. Save as JSON or YAMLTo save a simulation's results as a JSON or YAML file, add the following flag to the --output=output-format > filename Replace the following values:
Save as CSVTo save a CSV file, add the following flag to the --flatten="diffs[]" --format=csv(output-fields) > filename Replace the following values:
Optionally, you can add additional fields, such as The following is an example of a gcloud iam simulator replay-recent-access --flatten="diffs[]" \ --format="csv(diffs.accessTuple.principal, diffs.accessTuple.permission, \ diffs.accessTuple.fullResourceName, diffs.diff.accessDiff.accessChange, \ diffs.diff.accessDiff.baseline.accessState, \ diffs.diff.accessDiff.simulated.accessState)" \ //cloudresourcemanager.googleapis.com/projects/my-project \ proposed-policy.json > simulation-results.csv This example simulates For more information on formatting with the gcloud CLI, see formats. What's next
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates. Last updated 2022-11-04 UTC. [{ "type": "thumb-down", "id": "hardToUnderstand", "label":"Hard to understand" },{ "type": "thumb-down", "id": "incorrectInformationOrSampleCode", "label":"Incorrect information or sample code" },{ "type": "thumb-down", "id": "missingTheInformationSamplesINeed", "label":"Missing the information/samples I need" },{ "type": "thumb-down", "id": "otherDown", "label":"Other" }] [{ "type": "thumb-up", "id": "easyToUnderstand", "label":"Easy to understand" },{ "type": "thumb-up", "id": "solvedMyProblem", "label":"Solved my problem" },{ "type": "thumb-up", "id": "otherUp", "label":"Other" }] How do you start a simulation in TIA Portal V13?That is packaged with TIA Portal Basic V13 SP1.. create a TIA project with an S7-1500.. create some code you wish to simulate.. compile the project and make sure there is no problems.. start the PLCSIM V13 software.. create a new project in PLCSIM that is the same PLC as in TIA.. keep PLCSIM software open.. How do you start simulation in TIA Portal v17?With Siemens TIA Portal, PLCs can be simulated using the built-in simulation software PLCSIM and WinCC Runtime Advanced can be used to simulate HMIs. To launch PLCSIM in TIA Portal, simply select the PLC you wish to simulate, then click the “Start simulation” button on the toolbar.
How do I connect my Plc Sim to a TIA Portal?Setting up S7-PLCSIM with TIA Portal. Create a new project in TIA Portal.. Select Configure a device.. Click on Add new device. ... . Add IO modules from the Hardware catalog to the Rail. ... . Turn on the simulation by pressing Start Simulation.. Choose PN/IE as the type of PG/PC interface and on PG/PC interface select PLCSIM.. |