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* /Logger/SQL has been move to /Logger/Runlog/SQL for writing to the SQL database * A new /Logger/Runlog/ASCII directory is there to write directly to an ASCII file

; /Logger tree - see [[#LoggerODBtree | ODB /Logger tree]] : [[/Logger ODB tree |/Logger]]

; with the [[/Logger ODB tree]] : If the <span style="color: purple;">''/Logger''</span> ODB tree exists (i.e. has been created by [[mlogger]])

On a TR_START transition, tr_prestart will run after the logger and event builder, but before the Frontend (see Default Transition Sequence ...R_STOP transition, tr_poststop will run after the frontend, but before the logger and event builder.

...later playback through the midas history webpage. The [[Mlogger|midas data logger]] will automatically grab the current image from the webcam, and store it o .../History dir</code> in the ODB (or <code>/Logger/Data dir</code> if <code>/Logger/History dir</code> is not defined).

* [[Keys in the ODB /Logger tree| /Logger tree]] * [[Keys in the ODB /Logger/SQL subtree |/Logger/SQL subtree]]

* Logger information and statistics if [[mlogger]] is active. Logger Data dir: /scr0/spring2000 Message File: midas.log

Typically the logger and all front-end programs should be required programs.

secondary logging (lazy logger) Data logger applications

...ROOT may be done from one of the supported Data Formats (e.g. by the data logger - see [[mlogger#logging in MIDAS|logging in MIDAS]]). See also [[Equipment

* [[Keys in the ODB /Logger tree|/Logger ODB tree]] * [[Keys in the ODB /Logger/History subtree|/Logger/History subtree]]

...mlogger]] ODB settings ('/Logger/ODB Dump', '/Logger/ODB Dump File', and '/Logger/ODB Last Dump File'), you may have files named based on run numbers or just ...me location as the midas history data (based on '/Logger/History dir' or '/Logger/Data dir').

[[Keys in the ODB /Logger tree#Data Dir|/Logger/Data dir]]. ...appear by default in the /<span style="color: purple; font-style:italic;">/Logger</span> tree, but can be created by the user if desired. If this key is pres

* [[Data Logger]] As the data Logger (<span style="color:darkcyan;">''mlogger''</span>) runs independently from

Many users link to the [[Keys in the ODB /Logger tree #/Logger/Write data |Write data key]] (see [[#Creating ''edit-on-start'' parameters| * a link to the ODB parameter <span style="color: purple;">''/Logger/Write data''</span>

* '''[[mlogger]]''' &rarr; ''Event logger''

* '''[[Data Logger]]''' &rarr; ''Data Consumer for data recording''

<td class="comment">Dual Logger, LazyLogger mevb, multiple nodes</td> <td class="comment">Dual logger, Lazylogger</td>

...he composed event is then sent to the next stage which is usually the data logger [[mlogger]].

...nd]]. The format used is determined by the [[#Equipment List]]. The ''data logger'' can convert MIDAS/FIXED formats to "ROOT" format. :;Logger : [[Data Logger]] ''application'' [[mlogger]] serves multiple purposes related to data logg