Wiesemann & Theis GmbH

Networking, sensors and interface technology for industry, office and IT

Background information:

Network and serial interface basics

Information for reference and downloading


Information for downloading

  • TCP/IP Grundlagenbuch
  • TCP/IP-Ethernet - Netzwerktechnische Grundlagen

    Die achte Auflage erklärt die Grundlagen der Netzwerk­technik, alle wichtigen Protokolle von Ethernet über TCP/IP bis hin zu SSL/TLS.

    PDF: ca. 12 MB
  • Fit in one day for TCP/IP sockets
  • TCP/IP sockets

    "Fit in one day for TCP/IP sockets"

    PDF: approx. 0.4 MB
  • Wichtige Protokolle für Techniker
  • Protokolle für Techniker

    "Wichtige Intra- und Internet Protokolle für Techniker"

    PDF: ca. 0,4 MB

For the technical background, also see: Technical articles


Glossaries


Detailed information from A to Z

  • Graphic of interface with asynchronous data transmission
  • Asynchronous Data Transmission (serial)

    In serial, asynchronous data transfer, the individual bits that make up each data byte are transmitted one after the other over a line. In this context, asynchronous means... continue

  • Graphic of printer with interface
  • Printer interfaces

    Originally designed by the Centronics company as an interface for its own printers, the interface quickly developed into a universally accepted standard... continue

  • Graphic of computer screen with lightning icon, grounding and network plug icon
  • EMC compatible electrical installation

    Anyone who sells or installs computers connects their products to an electrical installation that may have been installed years ago. And the assumption is that... electrical installation

  • Graphic of glass fiber optic cable
  • Glass fiber optics

    Fiber optic transmission lines are the means of choice when it comes to implementing interference-free and tap-proof data transmission over long distances and/or in interference-contaminated environments... continue

  • Graphic of hexadecimal numbers with hex icon
  • Hexadecimal numbers with the Web-IO

    Decimal numbers are used in all cultures today. With digits 0..9, there are 10 possibilities for each digit of a number in this system. Using this system... continue

  • Image of an IEEE488 bus system plug
  • IEEE488 Bus Systems

    The IEEE488 standard defines a parallel, 8-bit wide bus, which today is mainly used to control measuring devices in laboratory technology... continue

  • Graphic of a plastic fiber optic cable
  • Plastic fiber optics

    The transmission of data using light via a corresponding fiber optic cable offers two decisive advantages over copper-based electrical transmission:... continue

  • Graphic of a Modbus icon
  • Modbus - Serial Communication

    Modbus is a communication protocol introduced by Modicon towards the end of the 1970s for the exchange of data between controllers, SCADA systems, data loggers... continue

  • Graphic and IoT icon and MQTT
  • MQTT - Communication in the Internet of Things

    The idea of an Internet of Things brings with it a central problem: How are countless devices - some mobile, some stationary, some with different performance... continue

  • Graphic of RS232 interface
  • RS232 Interface

    Topics:

  • Graphic of RS422 interface
  • RS422 Interface

    RS422 interfaces have been developed for high-speed serial data transmission over long distances and are becoming increasingly popular in the industrial sector... continue

  • Graphic of RS485 interface
  • RS485 Bus Systems

    Like the RS422 interface, the RS485 interface has been developed for high-speed serial data transmission over long distances. In the field of industrial automation... continue

  • Graphic of Single Pair Ethernet plug
  • Single Pair Ethernet (SPE)

    Single Pair Ethernet is the new Ethernet standard for Industry 4.0 and the Industrial Internet of Things. Thanks to several advantages, it is considered to be particularly efficient and future-orientated and is therefore useful for... continue

  • Graphic of 20mA/TTY plug connection
  • 20mA / TTY

    20mA transmission has its origins in the teletype interfaces of the postal service. The technology was primarily used by industrial terminal devices... continue

  • Graphic of W&T-internal serial TTL interface
  • W&T-internal serial TTL interface

    The device-internal pre-stage of asynchronous serial interfaces such as RS232, RS422, RS485, 20mA and fiber optics are TTL signals which are provided by the controlling chip (UART, processor or similar)... continue

  • Graphic of USB interface connector
  • USB Interface

    The Universal Serial Bus is a bus system that was developed in 1995 by a consortium of leading companies in the computer industry. The aim was... continue

  • Graphic of USB isolator
  • USB isolators for industrial use

    Along with Ethernet and WLAN, USB is one of the most widely used communication interfaces today. Even with industrial PCs you will search in vain for the traditional COM ports (RS232/422/485)... continue

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