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Chapter 13 - Tips and tricks for cable testing

48

PROFIBUS Tester BC-700-PB - User Manual

13.2

List of fault indications and remedial measures

The classifying text messages in the graphical user interface of PROFIBUS Tester 5
which describe the cabling errors are kept concisely. The table below lists possible
cabling error messages and provides a detailed description of the discovered fault
indications. The column on the right contains "remedial measures" and further starting
points in order to correctly interpret and to repair the indicated fault.

The PROFIBUS Tester 5 uses amongst other methods impulse reflectometry for
assessing the cabling and classifying and locating errors on the cable. Multiple cable
errors, which exist simultaneously on the cable may result in an imprecise cable test
result. Please bear in mind, the more the corrective repair of the cable is proceeding, the
more precise the cable test results in the corresponding PROFIBUS cable segment will
be.

Electromagnetic interferences may influence PROFIBUS cable testing in a negative
manner because cable conductors may act like an antenna. Please bear this in mind
during cable testing and take care of proper functional earthing of your plant respectively.
Existing high frequency noise voltage may negatively influence the PROFIBUS Tester 5 if
operated by means of the external power supply. We recommend operating on the
PROFIBUS-Tester 5 by means of the built-in battery under the above mentioned prevailing
conditions.

Cable testing error
message from
graphical user
interface of
PROFIBUS-Tester 5

Remedial measures - starting points for correctly
interpreting and repairing the indicated fault

Break on line A

The green signal line of the PROFIBUS-cable is broken. Please
search for damage on the cable in the vicinity of the indicated
error location. Possibly the error could come from a fatigue
breakage or a faultily assembled PROFIBUS-connector. The
green signal line typically is connected to Pin 8 of the
PROFIBUS Sub-D type connector.

Break on line B

The red signal line of the PROFIBUS-cable is broken. Please
search for damage on the cable in the vicinity of the indicated
error location. Possibly the error could come from a fatigue
breakage or a faultily assembled PROFIBUS-connector. The
red signal line typically is connected to Pin 3 of the PROFIBUS
Sub-D type connector.

Break on shield

The shielding conductor is broken in the tested cable segment.
Alternatively electromagnetic shielding is not applied for in a
continuous manner. Please search for damage on the cable in
the vicinity of the indicated error location. Possibly the error
could come from a fatigue breakage or a faultily assembled
PROFIBUS-connector.
In rare cases electromagnetic shielding may be disrupted
intentionally in order to avoid electromagnetic interferences.
Please check this issue with the planning personnel of the
PROFIBUS-facility.

Summary of Contents for BC-700-PB

Page 1: ...with PROFIBUS Tester 5 BC 700 PB PROFIBUS Tester 5 BC 700 PB User Manual Version MMA NN 006005 EN 1408 1 01 Insert graphic file from e g Sfiler iap_intern 10_Marketing 02_Materials 02 11_Photos For positioning data see projectdirectory Images readme_insert_graphics txt ...

Page 2: ... improvements to these instructions without prior notice The actual design of products may deviate from the information contained in the instructions if technical alterations and product improvements so require It may not in part or in its entirety be reproduced copied or transferred into electronic media Disclaimer of liability Softing Industrial Automation GmbH Richard Reitzner Allee 6 85540 Haa...

Page 3: ...4 3 10 Adapter for testing PROFIBUS PA networks 1 4 4 11 Spare rechargeable battery 1 4 5 12 Service interfaces for PROFIBUS DP 1 4 6 12 Connection type D sub 1 4 6 1 13 Connection type M12 1 4 6 2 13 1 5 System requirements 14 1 6 Connectors and controls Chapter 2 15 Prepare device 15 2 1 Insert battery 16 2 2 Charge battery Chapter 3 17 Startup 17 3 1 Power up 17 3 2 Power up behaviour without U...

Page 4: ...5 1 31 Requirements for analyzing a live bus 6 5 2 31 Analyzing during system shutdown 6 5 3 31 Bus connection 6 5 4 Chapter 7 32 Display and controls in stand alone mode 32 7 1 Main display 32 7 2 User interface 34 7 3 Operating functions and softkeys 35 7 4 Device status 36 7 5 Menu functions 39 7 6 Organize and store test results Chapter 8 41 Import data into the PC Chapter 9 42 Licenses Chapte...

Page 5: ...ery pack 53 Guidelines and warnings on battery use 14 2 1 54 Charging 14 2 2 55 Discharging 14 2 3 55 Storage and transportation 14 2 4 55 Battery life 14 2 5 55 Battery warranty 14 2 6 Chapter 15 56 Technical data Chapter 16 58 Declarations by the manufacturer Chapter 17 59 Recycling ...

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Page 7: ... is the first battery powered tester which combines the assessment of bus physics and bus communication as well as cable testing in one device It is therefore the only and truly mobile PROFIBUS diagnostic tool 1 2 About this document Read this manual before starting For damages due to improper connection implementation or operation Softing refuses any liability according to our existing guarantee ...

Page 8: ...dicates a potentially hazardous situation which if not avoided may result in minor or moderate injury Note This symbol is used to call attention to notable information that should be followed during installation use or servicing of this device Hint This symbol is used when providing you with helpful user hints 1 2 4 Document history Document version Modifications compared to the previous version V...

Page 9: ...5 BC 700 PB with carrying case 1 4 Optional accessories 1 4 1 D sub adapter cable for testing live systems This D sub adapter cable is optimized for reduced influence on live PROFIBUS DP segment operation Thereby it is most suitable for testing of running plants The risk of critical influences on bus operation which can cause a plant standstill is significantly reduced Note When using this cable i...

Page 10: ...d digital leakage current clamp When routing PROFIBUS cables in high interference environments electromagnetic interference can affect the signal quality By measuring the shield currents with the digital leakage current clamp you can locate EMC problem areas and take appropriate countermeasures The digital leakage current clamp is supplied in a handy case including measuring cables There is also a...

Page 11: ...s Figure 5 BC 700 H1 Adapter Figure 6 Supplied test equipment set for connecting to PROFIBUS PA segments Softing Oder No DDL NL 006010 Adapter and test equipment 1 4 5 Spare rechargeable battery Intensive use of PROFIBUS Tester 5 during the work day may exhaust the rechargeable battery faster than expected Plus charging and discharging will typically wear out the battery pack over the time refer t...

Page 12: ...ower the terminating resistor of the D sub connector You can thus use it as an active bus termination at the beginning or end of the bus If the PLC allows dropping and adding bus stations on the live bus you will need this external bus termination to be able to exchange the first and last bus stations without causing problems on the bus The compact unit is rail mounted like a terminal block and po...

Page 13: ...tput of the T piece and a 1 m PROFIBUS DP cable fitted with a male female M12 connector on each end Figure 9 M12 service interface for testing a live bus Softing Order No BC M12DP PB 1 5 System requirements Hardware PC USB 2 0 Operating system Windows XP with Microsoft Windows NET Framework 3 5 installed or Windows 7 32 bit or 64 bit or Windows 8 and Windows 8 1 32 bit or 64 bit ...

Page 14: ...Chapter 1 Introduction 14 PROFIBUS Tester BC 700 PB User Manual 1 6 Connectors and controls Figure 10 Connectors buttons and status displays on the PROFIBUS Tester 5 BC 700 PB ...

Page 15: ...hilipps and open the head screws on the back side of the device 2 Remove the back cover Figure 11 Removing the back cover of PROFIBUS Tester 5 3 Make sure that the provided battery is free of damage such as missing insulation of wire leads puncture or deformation Insert the provided battery standard accessory The connecting plug is protected against polarity reversal Check that the connecting plug...

Page 16: ...witched off The device is fully charged if the power key flares up very shortly Alternatively you may power on the device in order to receive additional information about the charge process The battery charge level indicator is located at the upper left corner of the screen the battery is being charged white flash symbol the PROFIBUS Tester 5 is fully charged without mains charger connected the PR...

Page 17: ... or that you have inserted the battery The display lights performs a self test and the splash screen is shown Hint We recommend operating the device solely using the wide range power supply supplied or using the integrated battery to avoid equalizing currents which can falsify the test results The tool is powered by a built in three cells lithium ion accumulator with 11 1 VDC Alternatively the too...

Page 18: ...ful completion of the self test the PROFIBUS Tester 5 displays Figure 13 Power up display when USB connected When you start the PROFIBUS Diagnostics Suite control and evaluation software on your computer and select the PROFIBUS Tester and a network for testing in its user interface the test tool switches to PC mode At this point you can also start a firmware update instead of using the control and...

Page 19: ...US Tester 5 is saving energy and the power key will blink slowly If a measurement function is currently active it is not possible to switch to sleep mode Depending on the settings in energy management the PROFIBUS Tester 5 may automatically change to sleep mode after a predefined period of time Return to normal operation mode You can recover normal operation very quickly by shortly actuating the p...

Page 20: ...e CD ROM For detailed installation instructions refer to the supplied Quick Startup Guide Connecting to a PC Use the included USB cable to connect the tool to a PC or notebook Always connect directly to an USB port We recommend connecting the unit directly to an USB port USB 2 0 on the PC or on the notebook When you use external USB hubs notebook docking stations or USB 3 0 ports for connection pr...

Page 21: ...cted occasionally Compliance with the connection notes is mandatory 6 1 2 Connection types You can connect a bus station to a PROFIBUS network either using connectors such as o D sub connectors most of which have an integrated terminating resistor and optionally an additional service socket o M12 connectors for environments requiring increased IP ratings o Special vendor specific hybrid connectors...

Page 22: ...apter set is optionally available see D sub adapter cable for testing live systems Only use original short cables Only use the original short cables with special pin layout to connect the unit to a PROFIBUS network Do not cascade more than two D sub connectors with service sockets at the same time Figure 15 Unallowed cascading of D sub connectors 6 1 4 Strain relief Use the strain relief supplied ...

Page 23: ...gton lock additionally To use the Kensington lock refer to the product manual Tie the Kensington lock cable to a fixed object and install the other end of the cable to the security lock port Figure 17 Using a Kensington lock 6 1 6 Test locations The PROFIBUS Tester 5 can basically carry out tests anywhere on a physical PROFIBUS segment Note that the use of repeaters creates separate physical segme...

Page 24: ...by using the terminating resistor provided with the M12 adapter set Shut down complete installation before connecting Shut down the PLC and all the devices connected to the PROFIBUS as all these simple connection types will divide the bus Figure 18 Connection points at system shutdown 6 3 Connection for testing a live bus DP To test a live PROFIBUS with the PROFIBUS Tester 5 during operation appro...

Page 25: ...apter cable BC 600 PB CB DSUB 1 for testing on live systems For testing on live systems we highly recommend using the optional D sub adapter cable BC 600 PB CB DSUB 1 with reduced influence on bus operation 6 3 1 Connection via D sub connector with service socket If all bus stations provide D sub connectors with an additional service socket you can simply plug in the PROFIBUS Tester 5 at that sock...

Page 26: ... User Manual 6 3 2 Direct cable connection To test a live PROFIBUS you will need additional D sub service interface of the type BC PBMB PB S see Service interfaces for PROFIBUS DP Figure 20 Service interface provide connection points at direct cable connection 12 ...

Page 27: ...1 Connection points for the M12 adapter cable Connect T fitting between existing cable and 1 meter connection cable Always connect one end of the T fitting to the already existing cable and the other end to the 1 meter connection cable which is supplied with the service interface Do not screw the T fitting of the M12 service interface directly onto a slave 6 4 Master simulator topology scan and ca...

Page 28: ...00 PB CB DSUB 2 which is included in the standard scope of supply must be used As long as communication is detected on the bus i e at least one device is an active master the functions are disabled If necessary disconnect every single active device PLC MPI and if necessary diagnostic repeaters from the power supply or the bus If an active device is at the end of the bus you want to test its PROFIB...

Page 29: ...or marked with OUT an outgoing arrow or A2 B2 Figure 23 Checking the connection direction at the D sub connector 2 When using M12 connection a Connect the cable from the bus start or test tool to the incoming M12 connector of the last slave b A bus termination is required at the outgoing M12 connector of the last slave 6 5 Connecting to PROFIBUS PA networks 6 5 1 Test locations There are several w...

Page 30: ...BP IS is not allowed You can use the connection points of bus stations or access points inside the field distributors as connection points Establishing the electrical connections required for measuring may vary from system to system and might not be possible during operation Figure 24 Connection points for PROFIBUS PA Hint An appropriate connection point is located directly at the DP PA coupler At...

Page 31: ...appropriate connection point and makes future maintenance work much easier 6 5 3 Analyzing during system shutdown If there is no possibility for connection you need to improvise in order to pick up the bus signal at an existing terminal block of the fieldbus coupler the field distributor segment protector or a field device For example you can try a double assignment of bus terminals Shut down the ...

Page 32: ...en returned to the main menu The main menu is your starting point where you can open any of the test functions or additional administrative functions Figure 26 Start menu 7 2 User interface The user interface of PROFIBUS Tester 5 comprises four parts Device Status in the upper right corner which provides information such as the battery charge level indicator system load status memory information s...

Page 33: ...ogs Access to this read only function or information is subjected to a sub menu function or to the Info softkey Other functions may require appropriate user input by means of input dialogs The colors light blue and blue indicate which elements are selectable or changeable by means of the input focus cursor Error messages are displayed in error dialogs The PROFIBUS Tester 5 contains a context sensi...

Page 34: ...ftkey in order to call functions or to request additional information The appearance of controls will change in a context sensitive manner If a softkey is grayed out the corresponding operating function is disabled Symbol Function Open menu submenu Browse backwards leave menu function Browse tab to the left Browse tab to the right Confirm select central push button in scroll wheel Start a stopped ...

Page 35: ...ctive The device runs with external power supply There is activity on the bus If the LED is green but no baud rate is detected e g in Bus Status function the activity on the bus results from disturbances and not from regular frames No bus activity open circuit voltage within correct range between 0 8 V and 1 4 V The bus termination is correct but no frames are transmitted on the bus To run a test ...

Page 36: ...he signal quality It is recommended to make at least two signal quality tests per physical segment at both ends of the corresponding segment Signal Quality Settings evaluation The signal quality evaluation settings contain limit values for the quality index signal noise ratio rise time and timeout Cable Test The cable test function examines the cabling in PROFIBUS segments This test detects the ca...

Page 37: ...and critical events in the bus communication The test data is stored in the tool It can subsequently be imported by the PROFIBUS Diagnostics Suite software application The tool displays the duration of the running trend test After completion of the test a tabular overview is displayed which informs you about existing and missing trend tests respectively The Trend Test runs until manually stopped i...

Page 38: ... each segment separately Extras Master Simulator Using the master simulator you can even test the signal quality while you are still setting up a PROFIBUS installation and the actual master is not operational yet The master simulator is disabled by default when you switch on the tool You can only select a baud rate on the display and thus start the master simulator if no other master is active If ...

Page 39: ...gment default segment and one test location default test location The test location has a major influence on the test result particularly when testing signal quality using the oscilloscope function or using the cable test function To store all test results within a network in the PROFIBUS Tester 5 you have to set the radio button to the corresponding network in the networks function see also User ...

Page 40: ...700 PB User Manual 4 Assign test location to segments You can do this in Test locations or in Networks Edit Network Edit segment subfunction Figure 30 Example network comprising three segments 13 PROFIBUS stations 2 repeaters and 6 recommended test locations two per segment ...

Page 41: ... dialog box has been completed in advance and contains already the network designations segment designations and the test location designations which have been derived from the network management of PROFIBUS Tester 5 BC 700 PB For ALL the stored data you need to fully select the action to be performed the network project and the test location to which you want to store the data The default action ...

Page 42: ... License in the Settings directory Figure 32 Viewing the license activation status Disabled functions or functions without a license will be grayed out or are not visible in the main menu in stand alone mode In PC mode of operation in conjunction with the PC software PB DIAG SUITE the corresponding functions are blocked too When USB is connected you can view the license activation status in PC sof...

Page 43: ...updates are made available as required They are provided with the updates to the PC software see Install software and connect to PC and allow access to new or improved functionality How to update the firmware is described in detail in the separate PROFIBUS Diagnostics Suite Quick Startup Guide 20 ...

Page 44: ...sories unless otherwise agreed Please also include a brief fault description and a phone number at which we can contact you should we need further details In case of returns within the warranty period please also enclose a copy of the invoice or delivery note The built in battery is subjected to normal wear and tear The battery capacity decreases in the course of years this is typical for specifie...

Page 45: ...isconn for stand alone mode Possible cause This error message can be caused by poor physical connection via USB loose contact Remedy Check the USB cable and connector Alternative cause The device may be connected via external USB hub notebook docking stations or USB 3 0 port which could evoke problems during driver installation Remedy It is recommended to connect the unit directly to a USB 2 0 por...

Page 46: ...e power key in order to power up the device The device is running but does not react to any user input Possible cause The program has crashed Remedy Actuate power key for at least three seconds in order to power off the device Switch off the power supply As the case may be open head screws on the back of the device and remove the connecting plug of the rechargeable battery After switching on the d...

Page 47: ...work is functioning properly or not The corresponding person gets necessary information and recommendations by means of using appropriate PROFIBUS diagnostic tools The table below contains assessment criteria which must be fulfilled in order to successfully complete the cable testing function The table describes also under which conditions the cable test will result in an error or failure Failed i...

Page 48: ...nal power supply We recommend operating on the PROFIBUS Tester 5 by means of the built in battery under the above mentioned prevailing conditions Cable testing error message from graphical user interface of PROFIBUS Tester 5 Remedial measures starting points for correctly interpreting and repairing the indicated fault Break on line A The green signal line of the PROFIBUS cable is broken Please sea...

Page 49: ... could come from an illegal spur line or from interference suppression capacitors This is common usage with over compensated or defective PROFIBUS devices Disconnect the devices in the vicinity of the indicated error location and repeat cable testing in order to encircle the error Unknown error The cable is still affected by unwanted reflections Though it is not possible to classify the fault indi...

Page 50: ...y Therefore it is recommended to ask service providers which are primarily specialized in troubleshooting the above mentioned issues Far end Near end terminator not powered The corresponding bus terminator has been switched on but the terminator is improperly powered by 5 V supply voltage yet During the cable testing the PROFIBUS Tester requires a properly terminated cable at the far end 2nd test ...

Page 51: ...le test after each shortening procedure until the error is no longer reported The last active bus terminator is the faulty one Near end terminator was powered by internal 5 V power supply This message is a note and not an error message The cable test has been passed successfully The bus terminating resistor has been switched on at the test location but is not powered via a PROFIBUS station Possibl...

Page 52: ...prox 50 m effective cable length and contains 20 PROFIBUS devices which are connected to the line by means of 12 MBit s Sub D type connectors Without indicating the number of connectors and devices the PROFIBUS Tester 5 BC 700 PB will detect a total cable segment length of 64 meters which corresponds to a systematic error of measurement of approx 28 The more precise you will enter the number of co...

Page 53: ...d warnings before using or charging your rechargeable battery pack Failure to read and follow the below instructions may result in fire personal injury and damage to property if charged or used improperly CAUTION The rechargeable battery pack contains 2 g Lithium Softing Industrial Automation GmbH its distributors or retailers assume no liability for failures to comply with these warnings and safe...

Page 54: ...age temperature Refer to Storage and Transportation for more information Use caution to avoid puncture of the cell Puncture of cells may cause fire You must not pull the wire leads when you carry or remove the battery from the device In case of cells being damaged do not use the battery anymore You must not open the cells Oxygen and lithium will heavily react with each other If the electrolyte may...

Page 55: ...than 66 C 150F Storing battery at temperatures greater than 77 C 170F for extended periods of time more than 2 hours may cause damage to battery and possible fire 14 2 5 Battery life Charging and discharging will typically wear out the battery pack over the time Due to this aging the usable battery capacity will decrease accordingly Higher current loads and deep discharge processes will considerab...

Page 56: ...with 8 16 samples per bit Oscillogram display test range 5V at 10mV resolution differential 0V 15V at 15mV resolution A or B to DGND Sampling rate up to 384 MSamples s for signal details 2 400 sampled points for oscillogram analysis 8 192 sampled points Topology scan active maximum distance 230 m accuracy 2 m Cable test active permitted cable segment length 5 m 1500 m accuracy 5 USB V 2 0 high spe...

Page 57: ...anual 57 Operation Via graphical color display four function keys and scroll wheel including central push button or via PC notebook Localization of the display texts English and German PC operating software PROFIBUS Diagnostic Suite see separate documentation ...

Page 58: ...hods of measurement Class A product EN 61000 6 2 2005 Electromagnetic compatibility EMC Part 6 2 Generic standards Immunity for industrial environments EN 61326 1 2013 A Declaration of Conformity in compliance with the above standards has been made and can be requested from Softing Industrial Automation GmbH Note To fulfill the EMC requirements the other components AC adapter PROFIBUS stations etc...

Page 59: ...C concerning waste electrical and electronic equipment WEEE The Directive determines the framework for the return and recycling of used appliances as applicable throughout the European Union This label is applied to various products to indicate that the product is not to be thrown away but rather reclaimed upon end of life per this Directive It is very important that customers understand and follo...

Page 60: ...Fax 49 89 4 56 56 488 Internet http industrial softing com Email info automation softing com Support support automation softing com Softing Industrial Automation GmbH User Manual Getting Started PB DIAG SUITE online help PROFIBUS Diagnostics Suite Related Documents ...

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