contact@webdyn.com | webdyn.com
V1.0 subject to changes | Webdyn © by Flexitron Group
5. Prerequisites
It is crucial for the WebdynModBus to have an internet access, either Ethernet or GPRS, in order to
enable le transfers between the gateway and a congured remote server, to enable the synchronization
of the gateway’s internal clock with the one’s of general purpose systems.
As mentioned above, the gateway exchanges les, of different types containing categorized information,
with an off-board FTP server.
• Alarm, data, log, and debug les must be uploaded by the gateway to the remote server for user
access to this information.
• Update and command les can be downloaded by the gateway from the remote server to take
into account new functionalities and bug xes comprised in new rmware versions and for the
user to transmit commands to the gateway.
• Conguration and denition les can be uploaded and downloaded by the gateway to/from the
remote server to give read and/or write access to the gateway’s conguration.
In addition, the factory default time and date setting of the gateway is 1st January 1970 at 00:00, known
as EPOCH time. In order for the gateway’s time to be synchronized with the time of other systems it must
communicate with an NTP server from which it receives UTC time.
Precisions on these prerequisites are listed below.
5.1 Access to the FTP Server
It is essential that the remote FTP server is congured the following way:
• Read/Write/Rename access authorized
• Passive mode enabled
• Port 21 (by default)
• Short handshake message
• Login and Password must be less than 30 characters
As the WebdynModbus gateway does not create any directories on the remote FTP serverthese must be
manually created by the user or the person in charge of the Information System used by the gateway.
Below is the list of directories which MUST be present on the remote FTP server. These directories don’t
however have to be at the root of the FTP server, a parent directory can be created as long as the path of
the directories below is manually updated in the gateway’s conguration:
• /ALARM: Contains the alarm les./BIN: contains binary les of the gateway for update purposes.
• /CMD: Contains the command and acknowledgement les.
• /CONFIG: Contains the conguration les for the gateway.
• /DATA: Directory for upload of data les. This directory contains four subdirectories:
• /MODBUS: Modbus data.
• /DEF: Contains the denition les for the modules and sensors to be controlled. This directory
To Next Page
Loading...
Need help?
General