SmartPLC SafeLine AC4S with fieldbus interfaces
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9.2
Operating states AC4S
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This chapter provides remarks about the operating modes and the states of the Standard PLC, the
fail-safe PLC of the device and the states of the applications.
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9.2.1
Standard PLC
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Operating mode of the Standard PLC
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The Standard PLC of the device can be operated in the following modes:
Offline mode
In the offline mode the user is logged out of the Standard PLC or there is no connection between
CODESYS and the Standard PLC (e.g. connection loss).
Online mode
In the online mode the user is logged in to the Standard PLC.
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States of the Standard PLC application
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The standard applications saved on the device are executed independently in separate tasks. A
standard application can have the following states:
Unload
No application is saved on the Standard PLC.
RUN
The standard application is executed (cyclically processed).
STOP
The standard application is not executed.
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Display operating state of the Standard application
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To display the current operating state of the Standard PLC choose one of the following options:
CODESYS:
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In the device tree: Node of the standard application indicates the current state.
OR:
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In online mode the CODESYS status bar shows the current state of the standard application.
GUI / web interface of the device:
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Select the [Applications] tab.
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The page displays the operating states of the Standard PLC applications saved on the device.