Actions Command Summary

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Latest SysCAD Version: 19 March 2024 - SysCAD 9.3 Build 139.35102

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Command		Icon	Shortcut Keys	Brief Description	Full Documentation / NOTES
Run			+R	Starts the SysCAD simulation. While SysCAD simulation is running, user can make value changes to access and trend windows. Some project commands requires SysCAD to be stopped, these commands will be greyed out while SysCAD is running.
Stop			+E	Stops the SysCAD simulation.
Idle			+I	If the project was stopped, the Idle action will start the simulation by evaluating all of the InitialisePreStart, Prestart and InitialiseSolution subroutines, then pause before iteration 1. If the project was already running, then this will pause a Dynamic or Steady State simulation once it has completed the current iteration. Useful in Dynamic mode: pause the simulation to check the state of the model without stopping the dynamic run (especially if it was a timed event). This command may not pause SysCAD immediately, especially if the project runs slowly. Check the Status Bar.
Step or Idle			F10	Available from Build 139.33513. Action depends on current state of the simulation solver. This is very useful for debugging a project, as it allows the user to advance the project one step at a time. If the project is in edit mode, pressing F10 will put the project in idle mode. If the project is in idle mode, pressing F10 will run the project for one step. If the project is already running, pressing F10 will put the project in idle mode.
Step			+T	If the project is in idle mode, runs the SysCAD simulation for one iteration or one timestep. If the project is in edit mode, the step action will run the model for one step. This includes the Startup actions, then one full step, then a solver stop. This is equivalent to three sequential commands (1) Idle, (2) Step and (3) Stop. The usual recommended action is to first put SysCAD in idle mode, then Step. Or available from Build 139.33513, simply press F10 that will make sure the project is first put into idle mode, and then Step.
MultiStep = n			+T	Available from Build 139. If the project is in idle mode, runs the SysCAD simulation for multiple dynamic time steps (or ProBal iterations), the number of steps can be selected from Set MultiStep menu option (see below) or in Plant Model. n is the current number of steps. This is very useful for debugging a project, as it allows the user to advance the project a few steps at a time. If the project is in edit mode, the MultiStep action will run the model for n steps. This includes the Startup actions, then n steps, then a solver stop. This is equivalent to three sequential commands (1) Idle, (2) n Steps and (3) Stop. The usual recommended action is to first put SysCAD in idle mode, then MultiStep. Or available from Build 139.33513, simply press Shift+F10 that will make sure the project is first put into idle mode, and then run n Steps.
Set MultiStep				Available from Build 139. Sets the number of steps to be used by the MultiStep menu function (see above). MultiStep defaults to 5, user can select other multisteps values, these are: 1, 2, 5, 10, 20, 60 and 100.
Run to Steady State				This will run a Dynamic model to steady state. Steady state is defined as the point where the flows, levels and concentrations no longer change. The results from this will be the same as those obtained from a converged steady state model.
Solve Flows
Group Operations			+G	This brings up the Graphics Flowsheet Group Operation Dialog box. A user can select multiple Graphics OR Areas to perform certain actions such as: Activate / Deactivate flowsheets (this replaces the Solver Settings - Active Page Tab) Delete / Close flowsheets Reset / Remove Qualities Graphis page display actions such as resize tags, add breaks to lines and so on.	See Group Operations for more information.
Reset			+Z	Reset calculated results and models states for the project.	See Reset for more information.
Reset Actions	Process			Only valid for Dynamic projects, It will empty all pipes and flow values when the run begins
	Control			Only valid for Dynamic projects, it will reset all controllers back to 'Base' state, i.e. the same state as when the controller is first inserted into the project. This is mainly relevant for PID controllers.
	Statistics			Only valid for Dynamic projects, resets all Statistical blocks
	Events/Profiles			Only valid for Dynamic projects, resets all Event and profile blocks back to start time
	Empty			Only valid for Dynamic projects, It will empty all surge contents, tanks, conveyors, multistore, etc. regardless of presence of Preset image.
	Preset			Only valid for Dynamic projects, It will apply all user defined Preset action for models. Currently this is only applicable for tanks with surge where a Preset image and options can be set.
Remove Qualities				The Remove Qualities command will clear the qualities information from all models and streams in a project. Used to clear unwanted qualities build up in recycle streams.	See Remove Qualities for more information.
Contents to Preset				Only valid for Dynamic projects. This command copies the current composition of the surge content to the Preset Image. This means that the next time a Preset action is performed, the composition will match the current contents of the surge. This can be performed on individual tanks using the CopyContentToPreset button on the Settings tab of the Tank access window.
Set Time to Zero				Sets time to Time zero. (Time zero in SysCAD is in seconds and corresponds to midnight January 1 1970.)