Process Station ABB FieldController 800
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6.4.3 Task state displays
Ready Task already loaded and manual start possible.
If no autostart has been configured for a task, it reverts to the
ready state after each cold start and has to be restarted.
Non-existent Task is loaded but cannot be started. A software version error exists.
Not loaded Achangetoatask,ortoaprogramwithinthetask,whichhasasideeffect
on the task, has not yet been loaded.
Unrunnable During execution of the task either an unrecoverable error occurred or a re-
coverable error occurred while automatic error correction was switched off.
Automatic error correction for a task is switched on in the default
setting. If automatic error correction is switched off, the task
changes to the unrunnable state on any error, even if the error is
recoverable. The error appears in text form in the task header and
the object number of the faulty project object is also displayed.
Exceptions are tasks which, although loadable, have no
lower-level user program. Such a task is thus unable to initiate
execution of a program, and if started nevertheless, it goes into the
unrunnable state.
Running After manual start of the task or when the task has been set up with
Autostart.
When a higher-level resource is stopped and re-started, the
lower-level task reverts to its old state. A task with Autostart
changes automatically to running. A task’s state may also be
changed when the resource is stopped, and the changed state will
be reassumed when the resource is restarted.
Stopped After execution of Stop task, Stop station (HW) or Stop higher-level re-
source (SW).
If a stopped task is reset to the ready state (not visible) with Reset,
no change to its state of stopped is displayed to the user. When
Stop is changed to Start, the RUN task is executed.
A task starts automatically if the switch on CPU module or FieldController is switched to
RUN and previous state of the task was Running.
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