ISPSoft User Manual

Chapter 5
Program Organization Units
and Tasks
Table of Contents
5.1 Program Organization Units and Tasks.....................................................5-2
5.2 Program Organization Units ......................................................................5-2
5.2.1 Program Architecture and Types........................................................5-2
5.2.2 POUs in ISPSoft.................................................................................5-3
5.3 Tasks.........................................................................................................5-4
5.3.1 Managing the Tasks in ISPSoft ..........................................................5-4
5.3.2 Tasks in the Project Management Area .............................................5-5
5.3.3 Executing the POUs Assigned to a Task............................................5-6
5.4 Managing a POU.......................................................................................5-8
5.4.1 Creating and Setting a POU...............................................................5-8
5.4.2 Enabling a POU................................................................................5-11
5.4.3 Deleting and Copying a POU ...........................................................5-12
5.4.4 Setting and Unlocking a POU Password ..........................................5-13
5.4.5 Exporting a POU of the Program Type.............................................5-14
5.4.6 Importing a POU of the Program Type .............................................5-15
5.4.7 Exporting a POU of the Function Block Type ...................................5-16
5.4.8 Importing a POU of the Function Block Type ...................................5-17
5.5 Managing Tasks ......................................................................................5-18
5.5.1 Setting the Property of a Task and the Condition of an Interrupt......5-20
5.5.2 Assigning a POU to a Task ..............................................................5-22
5.5.3 Arranging the POUs .........................................................................5-23
5.6 Example ..................................................................................................5-24
5.6.1 Writing a Program by Means of IEC 61131-3...................................5-24
5.6.2 Example of an Interrupt Subroutine in a DVP Series PLC................5-28
5.6.3 Example of an Interrupt Subroutine in an AH500 Series CPU Module
.........................................................................................................5-34
5-1