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4. Operation
The concentrator communicates with one or more remote servers using the FTP/SFTP/WebDAV-HTTPS
protocol and/or the MQTT/MQTTS protocol. These servers can be used to manage the concentrator
remotely.
Remote servers have several roles:
• Store the data and alarms collected locally by the concentrator: at each connection to the
server, whether following a manual request, the triggering of an alarm or the triggering of the
connection schedule, the concentrator deposits its memorized data.
• Congure the concentrator: at each connection, the concentrator synchronizes its conguration
with the dedicated le present on the server. In the absence of this le, the concentrator creates
it from its current conguration.
• Trigger actions on concentrator: the command les must be placed on the server in a directory
associated with the concentrator.
• Monitor the concentrator and assist in diagnosis: the concentrator can upload log les for
diagnosis purposes.
If only one of the servers is an FTP/SFTP /WebDAV-HTTPS server, the client must choose whether
to dene it as server 1 or server 2 depending on the required behaviour:
• Server 1: it will be considered a main server.
• Server 2: tit will be considered a backup server.
The main server is used to create or modify the conguration and send commands, as well as to receive
alarms. The backup server is only used as a copy of the les uploaded to the main server. It cannot create
or modify the conguration or carry out any actions.
4.1 The FTP/SFTP/WebDAV Server
For the WebdynSunPM, the operation of an FTP, SFTP or WebDAV-HTTPS server is identical. But it is
preferable to use an SFTP or WebDAV-HTTPS server which integrates security layers unlike a classic FTP.
The description in this chapter applies to the various types of servers.
Parameters:
The server is dened by the following parameters:
• An address: This can be an IP address or a domain name.
• A connection port (by default 21in FTP, 22 in SFTP, 443 in WebDAV-HTTPS).
• A login and a password: The parameters are used to dene the account to be used.
• A root directory: The root directory can be “/”, the server root directory, or a series of sub-
directories (for example: “/WebdynSunPM/00CF4/”).
You can congure your concentrator remotely from your server. This is only possible if your WebdynSunPM
is properly congured to upload and synchronise its conguration on this one.
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