122 • SMP Gateway User Manual
Select the Disabled checkbox if you want to disable the event file retrieval function, in which
case you may skip the remaining steps. By default, the checkbox is cleared since it is assumed
that you want to retrieve the files.
Choose a folder in the Folder drop-down list. This list contains the names of the system
folders you defined previously (see “Defining System Folders”, above).
In the File Rule drop-down list, choose which event files the master protocol instance will
retrieve at the SMP Gateway’s startup:
New files only.
Only those files that were generated since the last time a file was retrieved from the
device.
Files from last X days.
All files generated in the last X days, regardless of whether or not some of them may
have already been stored in the system folder. If you choose this option, you must specify
the number of days in the Max File Age box.
All files.
All available files, without restriction.
If you selected the Files from last X days rule, specify a number of days in the Max File Age
box. For example, a value of 5 means that all files generated in the last 5 days will be
retrieved at startup.
In the Minimum Free Disk Space box, specify the amount of disk space that has to be
available in the system folder in order to store an event file. When there is less disk space
available than what you have specified, the event files will no longer be retrieved from the
device. The maximum value you can type is 2,147,483,647, and the default is 0. If you type a
value of 0, available disk space will not be verified.
Optionally, you can type some meaningful information in the Extra Info box. This
information will be appended to each event file name.
Optionally, you can provide a description of the event file(s).
15.3 Retrieving files from another SMP Gateway
If two SMP Gateways are interconnected, you can configure them to exchange event files. File
exchange is based on the same principles that drive operational data acquisition: a slave
SMP Gateway is configured to make the files it retrieves available for a master SMP Gateway,
which is configured to gather the files. The master SMP Gateway can also be configured to
provide the files to another SMP Gateway, and so on.
Before going any further, you must configure the SMP Gateways to communicate together. You
can learn how to do this by reading the “Interconnecting SMP Gateways” section, page 77.
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