Practical TCP/IP and Ethernet Networking for Industry
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Technology Training that Works www.idc-online.com/slideshare Practical TCP/IP & Ethernet Networking for Industry
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The internet has made a substantial impact on the way we do business, as well as the plant and factory environment. One of the great protocols inherited from the internet is TCP/IP, which is used by most present-day automation and process control systems. SCADA systems, Programmable Logic Controllers and even low level instruments are using TCP/IP and Ethernet to transfer information. TCP/IP and Ethernet are truly open standards, available to competing manufacturers and providing the user with a common standard at low cost. This workshop covers the main aspects of TCP/IP and Ethernet in detail, including the practical implementation of TCP/IP in computer and industrial areas and the practical use of the internet and intranets. You will learn to troubleshoot and maintain TCP/IP networks and communication systems in an office and industrial environment. The workshop is designed to give you a superb fundamental grounding in TCP/IP and the internet, as it is applied to industrial automation and process control. The objective is to provide a useful and practical toolbox of skills that can be applied immediately to your plant or facility. MORE INFORMATION: http://www.idc-online.com/content/practical-tcpip-and-ethernet-networking-industry-21
Transcript of Practical TCP/IP and Ethernet Networking for Industry
Technology Training that Workswww.idc-online.com/slideshare
Practical TCP/IP & Ethernet Networking for Industry
Technology Training that Workswww.idc-online.com/slideshare
Objectives Understand the main elements of the data communication process Understand the difference between analog and digital transmission Explain how data transfer is affected by attenuation, bandwidth and noise in the channel Comprehend the importance of synchronization of digital data systems Describe the basic synchronization concepts used with asynchronous and synchronous
systems Explain the following types of encoding:
» Manchester
» RZ
» NRZ
» MLT-3
» 4B/5B
» Describe the basic error detection principles
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Data Communications
Communication systems:» Transfer messages from one location to another
location» Information component of a message is known as
data
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Transmitters, Receivers and Communication Channels
Communications process components:
» A source of the information
» A transmitter to convert the information into data signals compatible with the communications channel
» A communications channel
» A receiver to convert the data signals back into a form the destination can understand
» The destination of the information
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Communications Process
• Factors to be considered :
Form of signaling and magnitude(s) of the signals to be used Type of communications link (twisted pair, coaxial, optic fiber,
radio etc) Arrangement of signals to form character codes from which the
message can be constructed Methods of controlling the flow of data Procedures for detecting and correcting errors in the
transmission
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Interface Standards Accepted coding of messages and the rules
controlling the data flow and the detection and correction of errors are known as the protocol
RS-232:» Electrical signal characteristics
» Mechanical characteristics
» Functional description of the interchange circuits
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Protocols Important features:
» Initialization» Framing and synchronization» Flow control» Line control» Error control» Time out control
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Analog Signal
Analog signal
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Digital Signal
Digital signal
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Communications Channel Properties
• Signal attenuation :
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Channel Bandwidth
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Effect of Channel Bandwidth on Digital Signal
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Digital Link
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Simplex
Simplex transmission
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Half-duplex
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Full-duplex
Full-duplex transmission
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Clock Synchronization at the Receiver
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Asynchronous Data Transmission
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Asynchronous Data Reception (clock too slow)
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Synchronous Transmission
Synchronous frame
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Encoding Methods Manchester Differential Manchester RZ (return to zero) NRZ (non-return to zero) MLT-3 4B/5B
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Error Detection
CRC method detects errors with very high degree of accuracy in messages of any length and can, for example, detect the presence of a single bit error in a frame containing tens of thousands of bits of data
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