Quick Guide for New Users of CLICK Interrupt Programs

After naming a new Interrupt Program (see Add New Interrupt) but before the Interrupt Program opens, first time users of CLICK Interrupts will encounter the Quick Guide for Interrupts, which contains important information about Interrupts.

1. A Interrupt Program must have at least one Return instruction to go back to the Main Program.
2. If an Interrupt Program needs to access discrete I/O, select "Immediate" when inserting the instructions in the program.
3. The PLC must be in Run Mode to call an Interrupt Program.
4. It is not allowed to call a Subroutine from an Interrupt Program.
5. The END instruction cannot appear in an Interrupt. An END instruction is required in the Main Program.

Note: On Item 2 on the window shown below, Immediate option should only be used for a Critical I/O. Using it too much will be detrimental to the scan.

Access Quick Guide from Help Menu

If you do not want to see the Quick Guide each time you create a New Interrupt, click the checkbox on this dialog. The Quick Guide can still be accessed from the Help Menu.

Related Topics:

Add New Interrupt
Return Instruction