...
Editing of all objects in the process the D2000 CNF process is being performed in the configuration dialog box, a specific part of which is common for all editable objects and another part depends on the type of edited object.
Configuration The configuration dialog box of processes consists of several parts (tabs) containing the similar related parameters.
General properties
Groups
Archive
Statement
Time parameters
Conditions
Statistics
Filter
...
Defines a status text of the historical value. The status text allows to redefine redefining individual values' identification for the historical value.
...
Note: Value type may be defined for the archive purpose of a historical value of "Calculate archived values by defined statement" type only.
Technical units
Technical units of the historical value. Maximum: 12 symbols. Possibility to use the Dictionary (to open click the CTRL+L).
...
Technological limits are effective only for historical values which are calculated by D2000 Archiv (evaluated and statistical historical values). There are 4 limits defined: VHL, HL, LL, and VLL. Limit The limit can be defined either directly – by the value entry entered into the input field, or its value can be determined by a system object (dynamic limit) – the button right from the input field.
...
As the limits can be dynamic (determined by the object value), a situation when the relation VLL<LL<HL<VHL is not valid (the limits crossing) can occur. The historical value is then in the Limit Problem state.
Note: Changing the value of the dynamic limit will not cause a new evaluation of limits and possibly a new value with a changed Limits attribute. New The new value value of the dynamic limit is taken into account only when archiving a new value.
...
There are the following options:
- Archive object values - (primary archives) allows to archive values of D2000 system objects. Archiving can be either periodical or on value change.Ignore identical - optimization for processing of old values.
- Calculate archived values by statistical function (statistical archives) - allows to calculate values of applying of a statistical function to a defined object of Historical value by a statistical function.
- Calculate archived values by defined statement - calculates defined object of (evaluated archives) - allows defining a custom formula on top of existing objects of Historical value type that are . The formula is defined in the tab Statement. Calculation gives tab. The results of the calculation are again values, that are to will be archived.
- Fill archive from the script (Value storage) - values can be filled either from written either from an ESL script or manually from the process D2000 HI.
Note: all types of Historical values (also primary, statistical, and evaluated) can be modified from an ESL script or manually from the process D2000 HI).
| Kotva | ||||
|---|---|---|---|---|
|
...
- Archive - if the option Archive is checked, then the defined object to archive will be archived. If it is not checked, the object will not be archived (the archiving is disabled).
- Write Start/Stop - enables/disables automatic writing of START or STOP values.
- Depository - the option allows to enable enabling/ disable disabling of storing values of the historical value into the depository database.
Depository segment - allows to specify the specifying the depository database segment the values to be stored in if the parameter Depository is checked. The parameter can be used for the Oracle platform with with depository database segments enabled or for the PostgreSQL platform with with depository database segments enabled.Kotva trezorsegment trezorsegment
...
| Kotva | ||||
|---|---|---|---|---|
|
Optimisation Optimization of processing of old values processing of primary archives coming from communication (automatically or as a result of TELL command GETOLDVALthe GETOLDVAL command sent to the D2000 KOM process) or values of remote tags (as a result of TELL command GETOLDVAL sent to the D2000 Gateway Client process).
If the checkbox is checked, during the processing of the old value, the cache or archive database is queried whether the same value is already present there. If it exists, the value is discarded (and recalcs of statistical or calculated archived values which that use this primary archive value are not performed either).
Note: Optimisation is useful e.g. for archiving of I/O tags from communication using the protocol IEC62056-21:2002 File I/O. Its communication files contain several historical values (which KOM process sends as old values) and one new value for every I/O tag.
...