The program control method and instructions will allow us to specify what parts of the logic get solved and when this happens. This will control how the PLC will scan and solve your logic in your program using a synchronous PLC Scan. Understanding the PLC program scan will explain synchronous and asynchronous program scanning.
Task Management provides a method to see the overall flow of your PLC program. Individual ladder logic programs get solved left to right, top to bottom. The result of the rung before is available for the next rung. Looking into the folders of task management, we can see blocks of code. These blocks contain the ladder logic that will solve our logic. Instructions within the ladder logic code can also determine how the PLC will solve the logic.
We will be looking at using program control in the Productivity 2000 Series PLC.
Let's get started.
Detailed information can be found on our website. The post for this video is located here:
https://accautomation.ca/productivity-2000-plc-program-control/
00:00 Productivity 2000 PLC Program Control
01:31 Task Management Panel
03:21 Run First Scan Only
04:07 Run Every Second
04:39 Run When Called
05:41 Run Every Scan
05:57 For / Next / Break Loop Instruction
06:46 Stop Program Instruction
07:16 User-Defined Fault
07:46 Disable Task
07:57 Task Library
08:15 Moving Tasks in the Task Management Window
