Skip to content

Appendix

Technical specifications

The following table contains the technical specifications of Visual Flow Creator:

Description Limitations
Maximum number of flow tabs per user in the working area 30
Maximum number of nodes within a flow tab 200
Maximum project size limit 3 MB
Maximum number of projects 10
Maximum calculation duration of a flow 30 seconds
Maximum number of the node context variables in function node 5 per node
Maximum number of the flow context variables in function node 20 per tab
Maximum number of the global context variables in function node 100 per user
Time period for saving data in the context of the "function" node after the last read/write access or system reboot 6 months
Maximum number of context tags within the "function" node 1
Maximum file size for data transmission within the "read file" and "write file" nodes 1 MB
Maximum number of time series values per read operation 2000
Maximum limit of global context variables 100
Maximum size of a global context for the Production / Start for Free tenants 5 MB / 128 KB
Maximum flow context variables 20
Maximum size of a flow context for the Production / Start for Free tenants 5 MB / 128 KB
Maximum node context variables 5
Maximum size of a each node context for the Production / Start for Free tenants 2 MB / 128 KB
Maximum size of a tenant context for the Production / Start for Free tenants 5 MB / 128 KB
Maximum size for an email notification 250 KB
Maximum size of a function node for all tenants 1 MB
Maximum limit of emails per day per tenant 1000
Maximum limit of MQTT messages per tenant in 1 minute 10
Maximum limit of MQTT messages per tenant in 1 hour 500
Maximum number of HTTP-In requests per second per user 2

Note

Visibility of flows/ execution time of nodes

  • All created flows are visible for all users of a tenant. You cannot modify the flows of another user.
  • The execution time of all nodes for a tenant can be limited depended on the application and platform load.

Differences between Visual Flow Creator and Node-RED

The following table shows the difference between Visual Flow Creator and Node-RED:

Visual Flow Creator Node-RED
Maximum running duration of one flow is 30 seconds (or 2 minutes with the power mode option). Maximum running duration of one flow is not limited.
Application runs on AWS and Azure. Application runs on local system.
Maximum 5 custom modules can be uploaded for the custom nodes. No limit to create custom modules using Node-RED library.
No palette manager for the additional nodes. All nodes can be managed from the palette manager.
MindSphere authentication or private key is required to access the http endpoint using "Http-in" node. No authentication is required to access the http endpoint with "Http-in" node.
No access to msg.req and msg.res objects in function nodes. Access to msg.req and msg.res objects in function nodes is available.
No authentication is required to access MindSphere APIs. Authentication is required to access MindSphere APIs.
Name of the global context variable is "glob". Name of the global context variable is "global".
"Tenant" context variable is available, in additional to "glob", "flow" and "context". No "tenant" context variable.
Many MindSphere specific nodes are available No specific MindSphere nodes.
Dashboard nodes are extended to support multi-user functionality using "Only one browser" option in edit dashboard node properties. No dashboard nodes are extended to support multi-user functionality
Dashboard Viewer is available. No separate Dashboard Viewer.
Fleet Manager plugin is available. No Fleet Manager plugin.
No keyboard settings. Keyboard settings is available.

Any questions left?

Ask the community


Except where otherwise noted, content on this site is licensed under the MindSphere Development License Agreement.


Last update: October 19, 2022