Parameterization

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• Always the 1st step - Stay out of Trouble!

• Installation according to PROFIBUS Installation
  Guideline (Document 2.112, available from PTO)

• Use REAL PROFIBUS cable according to the standard

• Use appropriate shielding grounding

• Choose a master with an easy to use
  configuration tool

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• Check the Physical Setup - with the BT 200

• Wire break/crisscross
• Short circuit
• Termination
• Bus scan
• Length
• Reflections
• RS 485 interface

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• How to use the BT 200?
• Connect test plug with first connector and BT200
  with last connector
• Termination ON at the test plug only while
  testing the cable
• Turn the BT 200 ON and press the test key
• If everything is ok, you see the message cabling
  o.k. (1R) otherwise an error message appears

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• How to use the BT 200? (continued)
• In case of an error - work your way up

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• During Operation - Utilize LEDs of Devices

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• Diagnostic is built into PROFIBUS DP...

Up to 244 Bytes
Header
Header
Header
6 Bytes Mandatory
Device Related (Optional)
Identifier Related (Optional)
Channel Related (Optional)
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• so each Controlling Device can provide it!

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• PROFIBUS Monitor

• Monitors bus traffic
• No bus address
• No influence on performance
• Live list
• Trigger on events
• Detailed knowledge required

! Expert Tool !
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• Diagnostic Repeater

! NEW - 3rd quarter 2001 !
Segment 1

• Standard PROFIBUS
• Automatic search for transmission rate
• Repeater functionality
• Works with existing components

Segment 2
Segment 3
Segment 4
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• Diagnostic Repeater (continued)
• How does it work?
• Bus address assigned to diagnostic repeater
• Repeater determines and stores network topology
• Action is started by the configuration tool
  starts
• Errors determined via reflection measurements
• Standard PROFIBUS diagnostic used to report
  problems back to master

! NEW - 3rd quarter 2001 !
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• Diagnostic Repeater (continued)

! NEW - 3rd quarter 2001 !
How does it work?
Segment 1

• Error detection for segments 2 and 3
• 9 pin sub D for PC connection, e.g. for
  diagnostic purposes (segment 4)

Segment 4
Segment 2
Segment 3
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• Diagnostic Repeater (continued)

! NEW - 3rd quarter 2001 !
What type of errors can be detected?

• Wire break
• Short circuit A, B or versus shield
• Termination
• Sporadic errors

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• Diagnostic Repeater (continued)

! NEW - 3rd quarter 2001 !
What is reported?

• Name of the disturbed segment
• Cause of disturbance
• Location (between station X and Y)
• Distance
• Error rate (percentage)

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• Diagnostic Repeater (continued)

! NEW - 3rd quarter 2001 !
Online Diagnostic via Configuration Tool