Data Access
As previously stated, the function blocks use both cyclic and acyclic communication mechanisms to retrieve data from and send data to the TeSys™ island, depending on their functionality.
The following sections give an overview of how these two communication mechanisms can be controlled at the function block interface, what status information about the communication is available, and what parameters are involved to configure data access.
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Variables to control cyclic communication |
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Function block status |
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Variables to control the Avatar communication |
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Avatar status |
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Variables to control acyclic communication |
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Results of acyclic communication |
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Parameters for cyclic and acyclic communication |