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Festo Controller CECC
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4.7.4 Sample program
CASE state OF
0:
%QD5 := 1000;
//change referencing value to 1000
%QX16.0 := TRUE;
//release referencing
state := 10;
10:
IF %QX16.0 = FALSE THEN
//wait for referencing
state := 20;
//actual value equals 1000
END_IF
20:
...
END_CASE
4.8 Configuring RS422 (CECC-S)
4.8.1 Integration
To use the RS422 interface, it must be integrated in the controller configuration.
1. Add the "General Purpose Serial" interface to the device tree.
2. Highlight the "General Purpose Serial" branch in the device tree.
3. Right-click a free placeholder.
4. Select the "Plug Device" command in the context menu.
5. Select the interface from the table.
Figure: Integrating RS422
4.9 Configuring RS485 (CECC-S)
4.9.1 Integration
To use the RS485 interface, it must be integrated in the controller configuration.
1. Add the "General Purpose Serial" interface to the device tree.
2. Highlight the "General Purpose Serial" branch in the device tree.
3. Right-click a free placeholder.
4. Select the "Plug Device" command in the context menu.
5. Select the interface from the table.
Figure: Integrating RS485