Configuration Parameters; Connections And Variables - ABB Relion 650 Series Engineering Manual

Section 5
Protection and control engineering
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Figure 34: Cycle time and execution order
A function block type can be defined to be a member of one or several cycle times. A function
block instance can be set only to one cycle time.
Execution order
group 1
IEC08000271 V1 EN-US
Figure 35: ACT: Concept of Execution order sequence
In the conceptual MainApplication example in
block in the execution order group 2 defines the execution orders needed in group 1 and 3. The
preceding logic done with function blocks in group 1 must have a lower execution order than the
ones in group 2. The following function blocks in group 3 must have a higher execution order than
the main function block in group 2.
5.1.5

Configuration parameters

Configuration parameters are found in the parameter setting tool. For example, the SMAI function
block has to be configured to support AC-current values or AC-voltage values.
5.1.6

Connections and variables

A connection is the link or "wire" between function block outputs and inputs.
Rules and methods to do connections:
• Drag a line between two signals.
• Link two signals by using variables.
50
Execution Flow
Execution order Execution order
group 2 group 3
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Figure 35, the execution order of the main function
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