L-DALI User Manual
366
LOYTEC
Version 5.2
LOYTEC electronics GmbH
and for acknowledged alarms. Clients can subscribe to this tag in order to be notified
about changes in the alarm summary. The client has then to read the complete alarm
summary when notifications occur.
NotifyNewCnt (unsigned, Read-only): This tag is updated with an incremented notify
count each time a new alarm appears. This tag does not update when alarms are
acknowledged or go inactive.
Ack (string, Write): Writing to this tag acknowledges an alarm. The data type is string.
The written data is an XML document, which contains the
alarmAck
element. The write
must specify the XAID.
8.5.3.4 Trend Log Objects
Each trend log object on the device is represented by a folder in the OPC name space. This
folder contains a number of tags describing and controlling the trend log. To retrieve log
records, however, the XML-DA tag interface cannot be used. There are two options:
retrieve the complete log as a CSV file, or use the LOYTEC proprietary Data Log Web
service (XML-DL). That Web service uses the logHandle provided by a tag. The CSV file
location can be obtained from a tag also.
ServiceType (string, Read-only, const): This is a constant tag of type string, which
contains “trendLog”, or “alarmLog”. It identifies this folder as a trend log, data log or
alarm log folder. This can be used as an additional identification to the vendor-specific
property of the node tag.
Purge (Boolean, read/write): When writing TRUE to this tag, the log is purged.
TotalCnt (unsignedInt, read-only): This tag contains the total number of logged
records. This number can be larger than the BufferSize.
BufferSize (unsignedInt, read/write): The size in records of the log buffer. Writing to
this tag can resize the log buffer, if it is disabled.
LogHandle (string, read-only, const): This handle specifies the data log. The logHandle
must be used with the proprietary Data Log Web service.
CsvFile (string, read-only, const): This tag specifies the file path and file name of the
CSV data log file.
CentralDL0, CentralDL1 (string, read/write): These tags are obsolete and kept for
backward compatibility.
8.5.3.5 E-mail Templates
E-mail templates can be configured in the Configurator software. When an e-mail template
is triggered, the corresponding e-mail is transmitted. The e-mail template can also be
triggered over the OPC interface. Therefore, a node is added to the OPC name space for
each e-mail template under the “E_Mail” node.
Each e-mail node is named after the e-mail template and contains the following OPC tags:
ServiceType (string, Read-only, const): This is a constant tag of type string, which
contains “email”. It identifies this folder as an e-mail template folder.
Send (Boolean, read/write): When writing TRUE to this tag, the e-mail transmission is
triggered.
