From OpenSCADAWiki
Data:
The data acquisition mode/source (enumeration — TVArchive::SrcMode):
- SaveCur (-1) — save current mode in the commands;
- Passive (0) — passive mode of the data acquisition, the source puts the data into the archive itself;
- DAQAttr (1) — the data acquisition from the DAQ attribute when the DAQ attribute puts the data into the archive itself;
- ActiveAttr (2) [DEPRECATED] — active mode of the data acquisition from the DAQ attribute when the DAQ attribute is periodically polled by the subsystem "Archives";
The data combination mode (enumeration — TVArchive::CombMode):
- MovAver (0) — moving average;
- LastVal (1) — last-previous value;
- MinVal (2) — minimum value;
- MaxVal (3) — maximum value.
Data modes of the service request "Requesting for values of the specified value archive" (enumeration — TVArchive::ServReqDtMode):
- DMSimple (0) — simple record, one item per line;
- DMPack (1) — packed record, one adjacent equal (rounded) value per line;
- DMBin (2) — array of unpacked binary values encoded by Base64.