9 - Intro to DeviceNet - Fall 09

9 - Intro to DeviceNet - Fall 09 - MFET 243, Automated...

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MFET 243, Automated Manufacturing I 10/5/2009 Introduction to DeviceNet 1 MFET 243 Fall ‘09 Introduction to DeviceNe DeviceNet Topics Introduction to DeviceNet DeviceNet Components DeviceNet Fundamentals Introduction to The 1756-DNB Scanner Configuring the Scanner Module 2 DeviceNet Overhead Rungs
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MFET 243, Automated Manufacturing I 10/5/2009 Introduction to DeviceNet 2 Introduction to DeviceNe to DeviceNet Introduction to DeviceNet Topics : What is DeviceNet? Input Field Devices Output Field Devices Wiring Examples DeviceNet Options when Implementing a New System The ODVA 4 Typical DeviceNet Nodes DeviceNet Advantages Allen-Bradley PLC Platforms that Support DeviceNet Networking in Today’s Manufacturing Enterprise
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MFET 243, Automated Manufacturing I 10/5/2009 Introduction to DeviceNet 3 What is DeviceNet? DeviceNet is an example of a device-level local area network (LAN). DeviceNet brings LAN technology down to the lowest level of the manufacturing enterprise – the shop floor. 5 Just like a computer can function as a node on an Ethernet network, a field device (such as a photoelectric sensor) can function as a node on a DeviceNet network. Input Field Devices An input field device that provides on/off type information (such as a photo-eye) can be purchased with a discrete (switched) output or a DeviceNet output. An input field device that has a discrete (switched) output is wired to a PLC discrete input module (24 volts DC or 120 volts AC). 6 An input field device that has a DeviceNet output is wired to a DeviceNet network. The DeviceNet capable input device transmits on/off data as well as diagnostic information to the PLC.
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MFET 243, Automated Manufacturing I 10/5/2009 Introduction to DeviceNet 4 Output Field Devices An output field device that is switched on and off (such as a solenoid valve) by a PLC program can be: Wired to a discrete output module (24 volts DC or 120 volts AC), OR 7 Wired as a node on DeviceNet and then controlled by the PLC over the network. Example – Wiring input field devices that have switched outputs Chassis Processor module (Controller) +24 VDC Input field devices with switched outputs Backplane Discrete Input module (DC inputs in this example)
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MFET 243, Automated Manufacturing I 10/5/2009 Introduction to DeviceNet 5 DeviceNet capable field devices function as nodes on a DeviceNet network. The processor communicates with each Example – Wiring field devices that have DeviceNet outputs DeviceNet network. The processor communicates with each field device through a device known as a scanner . Device 0 Backplane DeviceNet field devices Device 1 9 Logix 5555 Controller DeviceNet Scanner (1756-DNB) Chassis Network Cable Device 2 Device n DeviceNet Options when Implementing a New System Today, a manufacturing company that implements a PLC-based control system has essentially three options with respect to DeviceNet: Option 1 – The company does not use DeviceNet!
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This note was uploaded on 02/29/2012 for the course MFET 374 taught by Professor T.e.kostek during the Spring '10 term at Purdue University-West Lafayette.

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9 - Intro to DeviceNet - Fall 09 - MFET 243, Automated...

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