ABB RELION 650 SERIES, Engineering Manual, Page: 52 / 110

IEC08000271.vsd
Execution order
group 1
Execution order
group 2
Execution order
group 3
Execution Flow
IEC08000271 V1 EN-US
Figure 36: ACT: Concept of Execution order sequence
In the conceptual MainApplication example in Figure 36 , the execution order of the main
function 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
GUID-52044790-0A7C-4D83-8634-887593A903BC v4
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
GUID-1564FB6D-2682-49AE-A1D5-8B7F03E4204B v3
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.
It is possible to search and replace variable names in ACT.
Connection validation
A connection is only useful and possible between two signals of the same data type, see Figure
37 .
Section 5 1MRK 511 284-UEN B
Protection and control engineering
46 650 series
Engineering manual
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