Introduction
The "Ignore events" mode makes the planned shutdown prevail despite the signals collected. The planned shutdown is considered to take priority: all the impulses are ignored for its duration.
The absence of green — normal time — despite the black arrows, one arrow being one impulse, shows that the impulses have no effect on time processing during the planned shutdown. The whole shutdown is preserved and informed under the chosen heading.
Careful: the mode only applies to the planned shutdown itself. During the deltas, impulses are still taken into account — see the case studies below.
Case studies
Impulse during the 1st delta
If an impulse occurs during the 1st delta, it is taken into account but does not invalidate the detection of the planned shutdown nor of the second delta. It splits the ongoing delta duration and generates normal time. The durations before and after the split are automatically informed under the delta heading.
Impulse during the planned shutdown
The impulse is ignored and does not invalidate the detection of the shutdown. Unlike in the deltas, it produces no split and no normal time: it has no effect at all.
Impulse during the 2nd delta
As with the anterior delta, an impulse during the second delta splits the ongoing duration at the moment of the impulse and adds normal time, equal to the theoretical cycle time — or to the non impactful threshold for Start & Stop — followed by the delta heading.
Impulse beyond the 2nd delta
An impulse beyond the 2nd delta ends the qualification of the posterior delta. Occurring outside the scope of the mode, which only concerns the planned shutdown, it is followed by normal time — equal to the theoretical cycle time, or to the non impactful threshold for Start & Stop — with no automatically informed heading.
Summary of the scenarios
The first impulse, during the anterior delta, splits the delta duration — the black bar above the arrow — and adds normal time. The second impulse, during the planned shutdown, has no effect: no split, no normal time. The third, during the second delta, produces a split followed by normal time; the rest of the delta is qualified under its heading. The fourth, beyond the posterior delta, generates normal time and ends the qualification of the second delta.
The "Stop Production" button
Manual action by the operator is considered to take priority. The deltas, being transitive and automatic, give way to the production stoppage heading. The qualification of the planned shutdown, however, prevails, because the shutdown is planned and non-transitive.
Prerequisite: to activate a "Stop Production", a stoppage must be ongoing and no impulse must occur at the moment of activation.
Diagram a: no impulse, without the "Stop Production" button — standard qualification. Diagram b: button activated before the 1st delta — the deltas are "covered" by the production stoppage. The impulses are ignored during the planned shutdown in any case.
Impulse during the 1st delta, with an active production stoppage
Receiving a first impulse during the anterior delta has two effects: it cancels the qualification of both deltas — anterior and posterior — as a production stoppage, and it splits the delta durations, adding the normal time linked to the impulse.
Impulse during the 2nd delta, with a production stoppage started before the period
The impulse does not invalidate the qualification of the 1st delta as a "production stoppage", but it does split the duration: the left side keeps "production stoppage", the right side shows normal time followed by the delta heading.
Impulses during the deltas, the planned shutdown and after the 2nd delta
Diagram c: the production stoppage button is used before the period and during the second delta. A first impulse splits the duration qualified as a production stoppage during the anterior delta: the production stoppage disappears and gives way to the delta heading, split in two at the moment of the impulse. A second impulse during the planned shutdown is ignored. In the meantime, the operator informs the ongoing second delta duration as a "production stoppage". A third impulse during the second delta splits the duration and adds normal time; the following duration is informed under the delta heading. A fourth impulse after the second delta shows a loss to be informed after the normal time.
Launching a task
Launching a task does not prevent the planned shutdown feature: the task heading is displayed for as long as the task lasts. If it does not cover the whole period (deltas + planned shutdown), the headings of the deltas and of the planned shutdown inform the remaining period. The automatic information — 1st delta → planned shutdown → 2nd delta — runs in the background, behind the tasks that are launched.
Impulses are ignored during the planned shutdown and during the tasks, and taken into account during the deltas, outside the duration of the task.
Diagram a: no impulse, no task — qualification according to the delta and planned shutdown headings. Diagram b: impulses present, no task — the deltas are split with normal time added; the impulse during the planned shutdown is ignored, with neither normal time nor split. Diagram c: impulses present and a task launched at the end of the 1st delta — the task duration is qualified under its own heading, without affecting the rest of the informed durations.
FAQ
Are all the impulses really ignored?
Only during the planned shutdown itself. During the deltas they produce splits and normal time; beyond the second delta they end the mechanism.
How do I disable the automatic information of the posterior delta?
Untick the "Allow after delta auto information" option — see the article "Configuring a planned shutdown step by step". The posterior delta then has to be informed by the operator.