1-5SectionCommunication by Using Memory Links
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• Actual PCs have many kinds of areas, where as PT memory is a single area.
When creating screen data by using the memory link methods, it is always nec-
essary to allocate PT memory to display parts.
For communication between the host and the PT by the memory link method,
refer to Section 4 Using Memory Link, and for how to use screen and display
elements, refer to Section 3 How to Use the PT.
1-5-3 Memory Link Online Transfer Function
When memory link communications are being used, the PT can be switched to
Transmit mode from the host and screen data can be written even if the PT is
operating. (The PT can be returned to RUN mode after the screen data is writ-
ten.)
The memory link online transfer function can be used to replace screen data at a
fixed time each day or replace screen data with maintenance screen data for
maintenance.
For more details on the memory link online transfer function, refer to 4-4 Memory
Link Online Transfer Function.
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