WAGO 750-830 Manual page 350

350 • Glossary
Service port
The service port is located next to the mode switch, behind the cover flap on
the controller. This port acts as the configuration and programming interface
and is used for communication with WAGO-I/O-CHECK, WAGO-I/O-PRO
CAA and for downloading firmware. A special programming cable (750-
920) is necessary.
SMTP (Simple Mail Transfer Protocol)
Standard protocol, with which E-mails are sent via Internet.
SNMP (Simple Network Management Protocol)
SNMP is used for remote maintenance of servers. This allows routers, for
example, to be configured directly from the network provider's office, with-
out having to physically visit the customer.
SNTP (Simple Network Time Protocol)
This connectionless network protocol performs time synchronization in net-
works with a time server via Internet. SNTP is a simplified version of the
NTP protocol. On account of this simplification (also with regard to the
software), SNTP operates somewhat less exact than NTP. SNTP is defined
in RFC 4330.
Socket
A software interface implemented with BSD-UNIX for inter-process com-
munication. Sockets are also possible in the network via TCP/IP. Per
Windows 3.11, they are also available in Microsoft operating systems.
STP (Shielded Twisted Pair)
An STP cable is a symmetrical cable with shielded cores twisted in pairs.
The classic STP cable is a multi-core cable, whose stranded conductors are
isolated. The conductors of the STP cable are individually protected; it has
no total shielding.
S-STP (Screened/Shielded Twisted Pair)
In addition to STP cables, S-STP cables are provided with total shielding
consisting of foil or network shielding in addition to the single shielding for
the individual conductors.
WAGO-I/O-SYSTEM 750
BACnet/IP Controller