RSView Supervisory Edition Installation Guide

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• • • • •RSVIEW SUPERVISORY EDITION USER’S GUIDEYou can use the DataLogMergeToPrimary command anywhere you can type an RSViewcommand or macro.If a model is running when you issue the command, RSView also performs a switchbackto the primary path or ODBC database for the specified model or all running models. If amodel uses file sets, RSView moves all files on the secondary path (including the currentfile set) to the primary path, begins a new file set on the primary path, and then continueslogging to the new file set. If a model uses the ODBC format, RSView merges the data inthe ODBC backup files into the ODBC database, and then continues logging to theODBC database.To restore the secondary or backup data, enable operators to issue theDataLogMergeToPrimary command at run time. For example, you could create a buttonobject and use the command as the press action.Using the DataLogNewFile commandYou can create new ODBC backup files and new file sets using the DataLogNewFilecommand with these parameters:• DataLogNewFile (where is a data log model name)creates a new file set for the specified data log model.• DataLogNewFile * creates a new file set for all data log models that are currentlyrunning.You can use the DataLogNewFile command anywhere you can type an RSView commandor macro.If a data log model uses the ODBC format, the command creates a new set of backup filesif RSView is logging to the backup path when you issues this command. If RSView islogging to the ODBC database, RSView logs an End Snapshot and then a Begin Snapshotwhen you issue this command.If a data log model uses file sets, DataLogNewFile starts a new file set regardless of whennew files have been set up to start for the data log model. The new file set is created in thesame location that RSView is currently logging to.DataLogNewFile records two snapshots of data: an End Record in the old file, and aBegin Record in the new file. It is not necessary to use the DataLogSnapshot command inthis case.To enable operators to issue the DataLogNewFile command at run time, you could createa button object and use the command as the press action.13-10
13 • USING DATA LOGGING• • • • •Using the DataLogSnapshot commandYou can record tag values using the DataLogSnapshot command with these parameters:• DataLogSnapshot (where is a data log model name)records tag values for all tags in the specified model at the instant the command isexecuted.• DataLogSnapshot * records tag values for all tags in all running models at the instantthe command is executed.You can use the DataLogSnapshot command anywhere you can issue an RSViewcommand or macro. For example, enter the command as the action for an event.Operators can also use this command at run time. For details, see “Providing a way to logon demand” on page 13-12.13 • PlaceholderExample: Creating an event for on-demand loggingTo create an event that will trigger logging when an alarm occurs:1. Click the On Demand log trigger.2. Open the Event editor. Create an expression such as:If alm_in_alarm(motor_fault) and new_batch_started then 1 else 03. In the Event editor’s Action field, type DataLogSnapshot where‘component’ is the name of the data log model.When the tag called motor_fault goes into alarm, and the tag called new_batch_started is1, the DataLogSnapshot command runs. All tags in the model will then belogged (not just the tag in alarm).Combining loggingYou can combine periodic or on-change logging with on-demand logging. This allowsdata to be captured at particular times, as well as when a particular event occurs.To combine logging1. In the Data Log Models editor, click the Periodic or On Change log trigger.2. Type the DataLogSnapshot command with the or * (asterisk) parameter,anywhere you can use a macro or command.13-11
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User’s GuideVolume 1Publication V
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ContentsPrefaceAbout the documentat
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CONTENTS• • • • •Plan how
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• • • • •RSVIEW SUPERVISO
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1Getting startedThis chapter descri
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1 • GETTING STARTED• • •
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2Exploring RSView StudioThis chapte
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2 • EXPLORING RSVIEW STUDIO•
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10Creating derived tagsThis chapter
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10 • CREATING DERIVED TAGS• •
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11Creating alarmsThis chapter descr
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11 • CREATING ALARMS• • •
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INDEX• • • • •redundancyS
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INDEX• • • • •Tags • 8-
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INDEX• • • • •Procedures
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RSView Supervisory Edition Installation Guide

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