ACT_InputMapping

In this logic, the input variables, mainly coming from the visualization, are verified and assigned to local variables for further processing.

ACT_CheckForSendRequest

In this logic, the commands to send an email are stored in a queue for sequential processing.

ACT_UpdateCredentials

In this logic, the credentials and the communication settings for the email client are updated with the variables displayed on the visualization. Further functions such as, the hidden credentials are processed in this subroutine too.

ACT_StateMachine

This logic implements the state machine for the email handling. The general states are:

oInitialization of the function blocks

oMonitoring the control commands

oTriggering the commanded function on the function blocks

oMonitoring the execution of the function blocks

ACT_AutoProcessing

The auto processing is executed in a chronological interval and controls the email client as follows:

oCheck whether new emails are in inbox

oDownloading new emails

oProcess the received emails, whereby emails are deleted or a response is created and sent

ACT_RearrangeQueueEmailToSend

This logic is called after each successful sending. It rearranges the queue for the buffered send requests.

ACT_OutputMapping

In this logic, the local variables are converted into the required format and then assigned to the associated output variables. The output variables are linked to the visualization.