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Dynamic Management of I/Os

The dynamic management of I/Os is done on the I/O Assignment tab of the Compound Safety PLC. On this tab, the safe I/O channels can be distributed between the safety controller and the standard controller, which are located below a Compound Safety PLC. The I/Os of both controllers are defined in a configuration file. Multiple I/Os can belong to an I/O group (in the figure: IOs1, IOs2).

sil2_img_compound_device_tree.png
sil2_img_io_assignment.png
Table 2. I/O Assignment Tab

Parameter

I/O groups and their parameters which were defined in the configuration file

The parameters can be the following channel types:

  • input

  • output

  • none

SafePLC

_cds_icon_radiobutton_activated.png: The parameter is used in the subordinate safety controller.

StandardPLC

_cds_icon_radiobutton_activated.png: The parameter is used in the subordinate standard controller.

Apply to target

The I/O assignment is downloaded to the controller as a file. This functionality has to be defined in the configuration file.



When you change the assignment of a parameter, this is automatically applied to the project configuration and is visible on the I/O Mapping tab. If an input/output is not selected in the I/O Assignment for a controller, then it is disabled on the I/O Mapping tab of the controller.

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