shows a simple situation where the execution order causes one cycle time
delay if the NOT gate is executed in the order determined by the automatic calculation.
Slot B (BIO).X1-1;4_BI1
Slot B (BIO).X1-2;4_BI2
Slot B (BIO).X1-3;4_BI3
Slot G (PSM).X1-15;16_PO1
AND
[ O:83|T:2,5|I:4 ]
B1
B2
O
AND
[ O:84|T:2,5|I:5 ]
B1
B2
O
NOT
[ O:251|T:2,5|I:5 ]
IN
OUT
OR
[ O:247|T:2,5|I:9 ]
B1
B2
O
GUID-D5DD7650-2DFC-47BE-8038-36834F1654AC V1 EN
Figure 44:
Feedback loop situation with automatically calculated execution
orders
By setting a smaller execution number to the NOT gate than to the AND gate, it is
possible to fix the execution order of all functions in a loop so that they are handled in
the same task.
Slot B (BIO).X1-1;4_BI1
Slot B (BIO).X1-2;4_BI2
Slot B (BIO).X1-3;4_BI3
Slot G (PSM).X1-15;16_PO1
AND
O:83|T:2,5|I:4
B1
B2
O
AND
O:84|T:2,5|I:5
B1
B2
O
NOT
[ O:80|T:2,5|I:5 ]
IN
OUT
OR
O:247|T:2,5|I:9
B1
B2
O
GUID-4AC672A0-D818-4CB3-BEF9-95079313A38E V1 EN
Figure 45:
Feedback loop situation with manually fixed execution order for NOT
gate
The execution number can be changed by right-clicking the function and selecting
Change CycleTime ExecOrder.
After manually defining the execution number, the function is excluded from the
automatic execution order calculation. The function can be included back to the
automatic calculation by right-clicking the function and selecting Include FB in
calculation.
5.1.5
Configuration parameters
Configuration parameters can be viewed and set with the Parameter Setting tool.
5.1.6
Connections and variables
A connection is the link or "wire" between function block outputs and inputs.
Connections can be made in two ways.
•
Dragging a line between two signals
•
Linking two signals by using variables
Section 5
1MRS759117 A
Protection and control engineering
70
REX640
Engineering Manual
