Profibus Installation Guideline - PAControl.com

1 Version 2006 PROFIBUSI nstallation Guidelinefor CommissioningVersion 2006 Profibus Installation Guideline for commissioning Version November 2006 Order No: 2/106 Copyright by PNO 2005 all rights reserved Profibus Order No: Identification: Office-04-0008 This document was created by the Installation Guide ad hoc work group of the Profibus Nutzerorganisation (PNO). Publisher: Profibus Nutzerorganisation Haid-und-Neu-Str. 7 76131 Karlsruhe Germany Phone: +49 721 / 96 58 590 Fax: +49 721 / 96 58 589 All rights reserved, including reprint, reproduction (photo copy, microfilm), storing in data processing systems, and translation, in whole or in part. 3/106 Copyright by PNO 2005 all rights reserved Revision log: Version Date Changes/History 3.

2 Draft distribution for review according to the review of in Karlsruhe into three documents (planning, assembly, commissioning ) Draft distribution for review Optical fibers chapter added Diagnostic telegram chapter added Change according to review contributions Change according to review contributions Modified by A. Verwer review Changes according to review comments Official version created of the document from Installation recommendation to Installation Guideline AvE Correction of table numbering Copyright by PNO 2005 all rights reserved 4/106 Contents Revision log.

3 3 Contents ..4 List of Figures ..6 List of Tables ..7 Preface ..8 Safety Disclaimer of Liability ..10 Reference Standards ..11 Explanation of symbols ..12 1 Simple Profibus Handheld Devices ..17 Optical fiber Attenuation measurement for optical fibers ..21 OTDR measurement ..22 Using optical fiber measurement processes ..23 Communication statistics ..24 2 Assembly Acceptance ..25 Visual Inspection - Profibus Copper and optical fiber Acceptance Measurements Profibus Description of the acceptance process Acceptance Measurements - Profibus MBP (PA) ..33 Acceptance measurements optical fiber ..34 Measurement Results Damping 3 commissioning / Acceptance ..37 Bus test.

4 38 commissioning the bus ..39 System configuration (step 3) ..39 Verifying Profibus station addresses (step 4) ..42 commissioning Profibus stations (step 5) ..43 Copyright by PNO 2005 all rights reserved 5/106 Testing the Signal Inputs (step 6) ..44 Testing the Signal Outputs (step 7) ..44 Create acceptance checklist (step 8)..45 4 Introduction to troubleshooting ..48 Checking the Cabling Infrastructure ..49 Measurements with a Bus Monitor ..50 The diagnostic telegram ..51 Oscilloscope Technical Prerequisites ..53 Measurement Measurement Profibus RS 485 ..55 Typical Signal Waveforms ..60 Measurements Profibus MBP (PA)..66 Optical fiber 5 Annex ..71 commissioning /Acceptance Checklists.

5 72 Multimeter (instrument for measuring voltage, resistance, and current) ..78 Profibus RS 485 with 9-Pin Sub-D Plug Connector ..79 Profibus RS 485 with 5-Pin M 12 Plug Connectors ..86 Profibus MBP (PA) with 4-pin M 12 Plug connectors ..87 6 Terms / Definitions / Abbreviations ..93 7 Copyright by PNO 2005 all rights reserved 6/106 List of Figures Fig. 1: Attenuation measurement Fig. 2: OTDR measurement principle ..23 Fig. 3: Measurement plug oscilloscope measurement ..54 Fig. 4: Potential shift at signals ..58 Fig. 5: Ideal signal form Profibus RS485 ..59 Fig. 6: Measurement Profibus Fig. 7: Signal waveform for Profibus cables that are too Fig. 8: Signal waveform for non-connected Profibus stations.

6 62 Fig. 9: Too much terminator resistance ..64 Fig. 10: Missing Fig. 11: Ideal signal form Profibus MBP (PA) ..67 Fig. 12: Profibus MBP (PA) with defective bus terminator ..68 Fig. 13: Measurement Profibus MBP (PA) (1 telegram)..69 Fig. 14: OTDR measurement principle ..70 Fig. 15: Profibus RS485 cable schematic with end terminations switched in ..81 Fig. 16: Measurement aid sockets ( Profibus RS-485) ..86 Copyright by PNO 2005 all rights reserved 7/106 List of Tables Table 1: Overview of device functions - BT Table 2: Overview of device functions - PROFBUS Nettest Table 3: Overview of device functions - Bustest II ..20 Table 4: Maximum fiber attenuation - optical fiber ..21 Table 5: Checklist for visual inspection of Profibus copper cable.

7 28 Table: 6 Checklist for Acceptance measurements for Profibus RS485 cabling ..31 Table 7: Maximum fiber attenuation - optical fiber ..35 Table 8: Resistance measurements for step 2 ( Profibus RS 485) ..83 Table 9: Resistance measurements for step 3 ( Profibus RS 485) ..84 Table 10: Resistance measurements for step 4 ( Profibus RS 485) ..84 Table 11: Loop Resistance Profibus MBP (PA) Table 12: Resistance measurements for step 2 ( Profibus MBP (PA)) ..90 Table 13: Resistance measurements for step 3 ( Profibus MBP (PA)) ..90 Table 14: Resistance measurements for step 4 ( Profibus MBP (PA)) ..91 Copyright by PNO 2005 all rights reserved 8/106 Preface There are already a large number of documents available for Profibus .

8 So why is the Installation Guideline for commissioning being added now? The answer is very simple. The existing documents have been created at different times and, therefore, feature a different structure. In addition, they contain extensive specifications directed at Profibus component developers. The user does not require this information, and it can be more a source of confusion than an aid. The Installation Guideline for commissioning , as the name implies, is designed to support the commissioning of Profibus systems. It helps you to verify proper Installation and assembly of your Profibus network. Moreover, the Installation Guideline helps you to locate possible errors.

9 Consequently, the Installation Guideline for commissioning is designed not only for commissioning personnel, but also for service personnel. The presentation of information has been kept as simple as possible to ensure understandability. However, commissioning and troubleshooting do require previous Profibus experience. Thus you should be familiar with the fundamentals involved in planning and assembling Profibus systems. In addition you should have experience in implementing PROFBUS systems. The operating principle of Profibus is not discussed in the Installation Guideline for commissioning . If you require this information, please use the respective documents provided by the PNO or corresponding technical literature.

10 Information on Profibus assembly is available in the Guideline for Assembly (Order no. ). This document does not replace any existing document. The previous documents of the PNO remain in effect. Copyright by PNO 2005 all rights reserved 9/106 Safety Information The use of the Profibus Installation Guideline for commissioning may involve handling hazardous materials or tools, or involve dangerous work. Due to the many and diverse applications of Profibus , it is not possible to take all options or safety requirements into consideration. Each system makes different demands. In order for you to competently judge possible dangers, you must inform yourself about the safety requirements of the respective system before starting your work.