Table of Contents
Advertisement
Glossary
SNTP: Simple Network Time Protocol
SNTP is a simplified version of NTP. NTP is a standard for synchronizing clocks in computer
systems via packet-based communications networks.
D-sub
Type identification for a connector.
Switch:
A switch is an electronic device for connecting several computers or network segments in a local
network (LAN) - similar to a hub. A switch is also known as an intelligent hub. In its original form,
the switch operates on layer 2 (Data Link layer) of the OSI model. The switch processes 48-bit
MAC addresses and creates an SAT (Source Address Table).
The switch has properties similar to a bridge and is also known as a multi-port bridge. Ethernet
switch is the shortened form, of switching hub and indicates the ability to operate switched
Ethernet.
TCP/IP
The Transmission Control Protocol/Internet Protocol (TCP/IP) is a family of network protocols.
Due to its considerable significance for the Internet, this family is also known as the Internet
protocol family.
Trigger
A trigger is a switch that activates an action when a specific event occurs.
UDP
User Datagram Protocol (UDP) is a minimal, connectionless network protocol belonging to the
transport layer of the internet protocol family. UDP allows applications to send datagrams in IP-
based computer networks.
URL: Uniform Resource Locator
An address uniquely identifying a location on the Internet. A URL for a WWW page is preceded
by http://. A URL can contain other details such as the name of a hypertext page normally
identified by the file name extension HTML or HTM.
Counter
A counter registers the state changes (edges) of a digital signal. With each state change, the
counter increments or decrements a value that is processed by the SIMATIC S7 or a PLC.
164
SIMOCRANE CenSOR
Operating Instructions, 07/2021
Advertisement
Table of Contents
