Historic data logging in the control
The control can autonomously record historic data. These data can then be accessed in a web operation, and where applicable these data can be read out from a control station and processed there.
The control provides a part of the memory for these historic data. As the programme, texts and historic data have to share the same memory, the capacty of the available memory depends on these values. Theoretically a maximum of 640 KB can be used, but this depends on the control type and the previously mentioned data.
The 1 KB memory is the parameter in a cyclical recording of 60 seconds which can save a over the last 2 hours. A maximum assignment of 640 KB * 2 hours/KB results in a theoretical recording time of 1280 hours (=53 days) for one value.
Instead of a cyclical recording, a recording only with a value modification can be alternatively parameterised. This usually extends the data reaching back in time, but does not allow for an accurate statement how far back these data go. Here it is only possible to state the minimum guaranteed data to be saved.
Generally 4 different data types are distinguished which have their own recording rules. These 4 data types are set points, measurement readings, continuous signals and feedbacks.
Here only recording rules are defined. The detailed descriptions contain the values of the system which are in fact recorded.
Recording rules for set points
Parameter |
Value |
Recording in a value modification of at least |
@adj_SwMinDff.1p@ (Einheit) |
Delay between 2 recordings |
@adj_SwMinDly.1p @ s |
Enforced cyclical recording after (0 seconds deactivates this option, then only recording in value modification) |
@adj_SwCyc.1p @ s |
Recording (0=Fill&Stop, 1=Ring memory) |
@adj_SwTyp.0p @ |
Recording rules for actual values
Parameter |
Value |
Recording in a value modification of at least |
@adj_MwMinDff.1p@ (Einheit) |
Delay between 2 recordings |
@adj_MwMinDly.1p @ s |
Forced cyclical recording after (0 seconds deactivates this option, then only recording in value modification) |
@adj_MwCyc.1p @ s |
Recording (0=Fill&Stop, 1=Ring memory) |
@adj_MwTyp.0p @ |
Recording rules for continuous values
Parameter |
Value |
Recording in a value modification of at least |
@adj_YMinDff.1p@ (Einheit) |
Delay between 2 recordings |
@adj_YMinDly.1p @ s |
Enforced cyclical recording after (0 seconds deactivates this option, then only recording in value modification) |
@adj_YCyc.1p @ s |
Recording (0=Fill&Stop, 1=Ring memory) |
@adj_YTyp.0p @ |
Recording rules for feedbacks
Parameter |
Value |
Delay between 2 recordings |
@adj_StMinDly.1p @ s |
Forced cyclical recording after (0 seconds deactivates this option, then only recording in value modification) |
@adj_StCyc.1p @ s |
Recording (0=Fill&Stop, 1=Ring memory) |
@adj_StTyp.0p @ |