IFM AC1421 - PLC Operating States

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ifm Programming Manual AS-i Gateway AC14 (4.2.x) 12/2017
Operation Operating states of the PLC
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8.2 Operating states of the PLC
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This section provides information about the operating states of the device and the states of the PLC of
the device as well as information about the states of the applications.
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8.2.1 Operating mode of the PLC
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The PLC of the device can be operated in the following modes:
 Offline mode
In the offline mode the user is logged out of the PLC or there is no connection between CODESYS
and the PLC (e.g. connection loss).
 Online mode
In the online mode the user is logged in to the PLC.
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8.2.2 States of the PLC application
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The applications saved on the device are executed independently in separate tasks. A application can
have the following states:
 Unload
No application is saved on the PLC.
 RUN
The application is executed (cyclically processed).
 STOP
The application is not executed.
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Display operating state of the application
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To display the current operating state of the PLC choose one of the following options:
 CODESYS:
> In the device tree: Node of the application indicates the current state.
OR:
> In online mode the CODESYS status bar shows the current state of the application.
 GUI / web interface of the device:
► > >
► Select the [Applications] tab.
> The page displays the operating states of the PLC applications saved on the device.