4How to developmentThe development order is roughly as follows.Step 1. Prepare the environment for development. Create New project in PGMS.Step 2. Set COM port of unit, and define communication node.Step 3. Define and register tag.Step 4. Define tasks, create ladder block. To define task, it is necessary to define tag beforehand.Step 5. Set unit function.Step 6. Design screen.Step 7. Download project to PMIU unit, check operation and debug project.The order of each step might change places and go back. Advance development by the method it is easy for you.But, note the following relations. An extra going back happens when it makes a mistake in these orders.・ Tag is necessary to define Task.・ Registration of Node is necessary to add tags of the communication device.Therefore, when you add the task that uses tag of communication device, the order "Add Node ", "Register Tag", and "Define Task" should not be replaced.