SIMPLORER User Manual V6.0 - FER-a

A
538 Appendix
A.4 Troubleshooting
Modeling
• Project must be copied before you can work with it
Please remove the write protection from your files.
• Cannot connect elements on a sheet
SIMPLORER schematic checks that the types of two pins to be connected are correct,
e.g,. it is not possible to connect an electrical pin to a signal pin. So please check that you
are connecting the proper pin types. If the connection is still impossible, please place the
same element again.
• Connections are muddled
Select the muddled wires, click the right mouse button and select «Disconnect» from the
pop-up menu.
• Errors in the SML Syntax
Using comma as decimal point is not allowed.
Logic operators must surrounded by spaces.
Predefined variables cannot be used for names in a model description!
When using functions, there should be no space between the function argument and the
open parenthesis mark.
Names for variables and elements are case sensitive. Please check the style.
• Errors in the modeling
Each independent circuit has to be connected to the ground node at least once. Only
electrically reasonable circuits lead to correct simulation results. Voltage sources, current
sources and switches are ideal components.
Display and Simulation
• No graphic is displayed
It is possible that you did not define any outputs for a component (right mouse click and
select Output) or you did not select the values to display in a Display Element.
Please check the settings in EDIT>PROPERTIES. Check also, if the View Tool Window is
reduced to a symbol in the Windows task bar. Restore it with the menu item «Restore».
• Simulation does not start
Please check the simulation queue in the SSC Commander. Here you will see all active
jobs. All simulations are placed in this queue and processed according the start time.
Another possibility is that the simulator window is still open in the task bar. If so, please
close it.
• Unexpected simulation results
If the controlled sources are part of closed control loops in the circuit, stability problems
can occur if the total gain of the loop is greater than or equal to one. In this case, (linearly
or non linearly) controlled sources which directly access variables from the set or circuit
equations should be used.
• The simulator computes always with the maximal step width (HMAX)
If the simulation model only consist of blocks, the block diagram is computed (to each
time step) with the maximal step width (HMAX).