Input Transitions

This transition models the arrival raw material of or part from outside the module.

Output Transitions

The idea of output transitions are initiated to model the parts leaving from the module.

We suppose the following rule like a generality to above situations as:

'While a transition is firing which presents the employ of any resource, this is not possible to initiate another firing of the similar transition'.

The initiation of next firing is possible simply after the firing of the transition beneath progress terminates.