Technical data

ETHERNET • 133
Network Communication
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
5.3.4.7 SNTP-Client (Simple Network Time Protocol)
The SNTP client is used for synchronization of the time of day between a time
server (NTP and SNTP server Version 3 and 4 are supported) and the clock
module integrated in the fieldbus controller. The protocol is executed via a
UDP port. Only unicast addressing is supported.
Configuration of the SNTP client
Configuration of the SNTP client is performed via the web-based management
system under the “Clock” link. The following parameters must be set:
Parameter Meaning
Address of the Time
server
The address assignment can be made either over a IP address or a
host name.
Time zone
The time zone relative to GMT (Greenwich Mean time). A range
of -12 to +12 hours is acceptable.
Update Time
The update time indicates the interval in seconds, in which the
synchronization with the time server is to take place.
Enable Time Client
It indicates whether the SNTP Client is to be activated or
deactivated.
5.3.4.8 FTP-Server (File Transfer Protocol)
The file transfer protocol (FTP) enables files to be exchanged between
different network stations regardless of operating system.
In the case of the ETHERNET controller, FTP is used to store and read the
HTML pages created by the user, the PFC program and the PFC source code in
the fieldbus controller.
A total memory of 1.5 MB is available for the file system. The file system is
mapped to RAM disk. To permanently store the data of the RAM disk, the
information is additionally copied into the flash memory. The data is stored in
the flash after the file has been closed. Due to the storage process, access times
during write cycles are long.
Note
Up to 1 million write cycles are possible for writing to the flash memory for
the file system.