Lufft CHM 15k, Руководство пользователя

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Operating Manual CHM 15k R13 / 07-2019
Communication via RS485 & Ethernet 53
Figure 24 Web interface: Process warnings and error log. AFD status is only visible if AFD mode is set to 1.
8.7.5 Time server
Automatic time synchronization with a time server (NTP server) is only performed if the NtpMode
parameter is set to 1 and a valid time server (Ntp server) is set.
ntpd.conf configuration files are listed on the time server. The preconfigured server is: 0.0.0.0 (not a time
server) and the time server mode NTP mode is switched off.
Example: ptbtime1ptb.de, IP address 192.53.103.108.
Using this IP address is recommended. A valid DNS server address must be set before the server address
can be used. If the system detects a time server, it is used immediately.
Please note:
The user should avoid time settings via the date-time command (RS485) with
simultaneous execution of ntpd over TCP / IP.
8.8 AFD mode
A specific communication mode called automatic file distribution (AFD) mode is supported by the CHM
ceilometer series.
It is used to automatically send data measured in NetCDF format to an ftp server and requires an active
Ethernet connection.
The AFD mode can be activated via the web interface (Figure 20) in superuser mode. The configuration
file “afdsettings” must be downloaded, configured, and uploaded again to accommodate local needs.
AFD is preset to transfer three 5-minute NetCDF files every 15 minutes. The user can merge the NetCDF
files into 24-hour files.
The configuration file
“afdsettings.text” is shown below. The official file name is: “dir_config”. Further
information on the commands listed here can be found on the DWD-AFD website . Hashes (#) are used
to comment out commands.