Wireless 101 Whitepaper

Product catalog summary

Overview
This document provides an in-depth explanation of wireless data transmission, specifically focusing on the use of radio links as a replacement for traditional cable connections in industrial settings. It highlights the advantages of using the DATAEAGLE 3000/4000 systems for robust and efficient wireless communication.

Functional Principle
The document explains the principle of replacing cable connections with radio links using wireless standards like WLAN or Bluetooth. It emphasizes the importance of maintaining a pre-set response time, typically between 16 ms and 128 ms, to ensure smooth and failure-free operations. The communication between PLCs (Programmable Logic Controllers) and I/O modules is facilitated through standardized fieldbus systems such as PROFIBUS DP, PROFINET IO, or CAN.

Challenges and Solutions
Radio interference can lead to data loss and bus-error conditions, causing machine downtimes. The document discusses how conventional radio systems without data pre-processing can lead to overloads and errors. In contrast, the DATAEAGLE system preprocesses data, using patented algorithms to ensure error-free operation by reconstructing lost or broken telegrams and replacing delayed packages.

Advantages of DATAEAGLE
The DATAEAGLE system offers several advantages, including high data rates up to 1.5 Mbit/s without altering PROFIBUS configurations, and the ability to filter and transmit only changing telegrams to reduce radio link traffic. It also features an intelligent firewall and adjustable filter times to maintain communication even during short transmission interferences.

Application Examples
The document provides examples of successful implementations of the DATAEAGLE system, such as the safe operation of the Roosevelt Island Cable Car in New York, automation in galvanization plants, and stage equipment for Helene Fischer's concerts. These examples demonstrate the system's reliability and effectiveness in various challenging environments.

Contact Information
For more information, the document provides contact details for Schildknecht AG, the company behind the DATAEAGLE system.

Catalog excerpts

Radio instead of Cable Robust Wireless Data Transmission Cable Replacement Radio Link Radio Data Transmission explained

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Cable Connection Radio Link Functional Principle Data Transmission Principle Radio Conventional cable connection How many meters cable? Response time via Radio – Within tolerance Response Time via Radio – Exceeding the Tolerance Data packages are sent between the PLC and the I/O Modules. Communications in a machine, between PLC, sensors and actuators is realized with standardized fieldbus systems such as PROFIBUS DP, PROFINET IO or CAN. Typically every millisecond telegrams are exchanged via the fieldbus. Most of the times there is more than one I/O Module that is connected to the PLC in the...

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Wireless Transmission without DATAEAGLE Wireless Transmission with DATAEAGLE Conventional Radio Systems without Data Pre-processing Radio system competitor Smart Radio Radio system competitor Radio Link Data package no information Radio Link Missing data analysis Transmission 1 : 1 data unknown Missing data analysis Data package no information Data package no information Data analysis & preprocessing Analysed and detected data Data analysis & preprocessing Data package known content 1 : 1 Transmission of Data Packages 1 : 1 Processing of Data Packages Data Transmission with DATAEAGLE Data Processing...

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Smart Wireless Your Advantages in Detail Pre-Processing and Temporary Storage of Telegrams Within an adjustable filter time it is possible to maintain the PROFIBUS communication, even in the event of short transmission interferences. This helps avoiding bus errors and consequently system stops. Longer failures of the wireless connection, anyhow, are recognized and passed on to the PLC. In this case the control reacts as with a defective cable and activates all necessary safety functions. The filter time can be adjusted between 20 ms and 20 s. Radio Link Setup and Monitoring of Filter Time The...

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Application Examples Thousands of wireless systems have successfully been implemented. Please find more references on our homepage New York – Roosevelt Island – The Cable Car operates safely Scheffer Crane Technology – Automatic Mode Cranes in Galvanization Plant Stage Equipment for Helene Fischer – The birds flies smoothly in every show ‘breathless’ The installation equipped with a safety PLC should not cause disturbances at any time. The radio system DATAEAGLE 3702A was tested successfully and put in place in 2010. Since the terminal in Manhattan is located in E 60th Street but the cable car...

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