This form is used to enter measurement readings for all reading points corresponding to the search criteria entered.

• Date: Date that will be recorded as the reading date. Initialized with the current date; you can change it.
  As default, the date of a new reading must be later than the most recent reading (and always earlier than the system date).
  A user profile setting can be used to make this check more flexible, by allowing a "Non-chronological" reading (for which the date is earlier than the latest reading).
• Reading point: The one to which the reading refers.
• Reading point name: Name of the reading point
• value: Value of the reading that you need to enter. Must be between the minimum value and maximum value of the reading point.
• Variation: Difference between the value of the reading and that of the previous reading. It is filled in by the application.
  In the case of a meter, you can enter the variation and the system will calculate the value, with the variation always being positive in the case of a meter.
  In the case of a correction, the variation is calculated with respect to the last correct value, that is, the last reading not followed by a correction.
• Last value. : Last reading value (most recent in chronological order), non-modifiable.
• Comment: Information about the reading entry, which can be viewed in the reading history.
• Correction: Check this box if you are not going to take another reading, but you wish to:
  • Either correct the last entered value, which was incorrect.
  • Or assign another value because the meter was replaced. In this case, it is advisable to distinguish between a physical meter (the interchangeable element providing the reading) and a linked virtual meter (for the target equipment, totaling the ageing).
• Repercussion: If you enter a correction value, specify whether the correction is to be applied to the target reading points by checking this box.
  If non-chronological readings are allowed, this box can never be accessed: repercussion is not possible.

Correction entry examples

The (actual) parts meter has a maximum value of 1000. It feeds a (fictitious) time meter for operation of the machine.

Example 1:

The meter is no longer working. You replace it with another initialized to 0.

The new correction reading is "0." The value of the time meter must not be modified.
→ You select "No" repercussion.

Example 2:

The last reading of the parts meter has a value of 800.

This value was incorrect. In reality, it needed to read 200.
→ You therefore enter a new reading of 200 and check the "Correction" box.

 

This correction is to be impacted:

• "Downward" if the variation is -600 compared to the incorrect value,
• "Upward" if the variation is +400 compared to the incorrect value (because the meter has completed a cycle).

Non-chronological readings

In this case, specific checks are applied to the value recorded, to ensure that a backdated entry does not introduce inconsistencies between trends from previous measurements and possible triggering of preventive work.

Entry of a non-chronological value is permitted according to rules which apply to all types of measurement point (simple and meter):

• The reading is taken into account as a new Value (the variation is calculated during processing): this value is always shown on the data entry screen.
• A reading cannot be recorded for a date that is prior to a Correction reading, as this would implicitly cancel the new reading: otherwise, it would implicitly neutralise this new reading in progress.
• Readings are sorted by date. A non-chronological reading cannot be entered at an identical date to an existing reading (minimum difference 1 second).
• A non-chronological reading implies a variation calculation relative to the previous valid value. It also results in a modification of the variation for the next valid reading, whose value remains fixed.

Additional checks are applied for a reading on a Meter, in order to follow ageing-related rules, and retaining the historical variation cycle for the meter: either for a phase where the value increases, or if the meter’s display threshold is exceeded.

The resulting conditions and processing depend on the following aspects:

• The historical period deduced from the reading date, distinguishing between a rising variation phase (ageing) and a counter threshold overrun phase resulting in a return to zero.
• Whether regression is authorized or not for the measurement point (for corrections).
• The processing differs depending on whether the non-chronological reading is a Correction or not.