6 Troubleshooting
6.1 LED indicators
48
OZD Profi G12D... ATEX 1 V. 03 07/2014
If the transmission in the RS 485 network is not satisfacto-
ry even after clarification of points in chapter 6.2 , “fault
finding”, page 47, send your replies to the following
queries as well as the requested documents to our ser-
vice hotline (contact address: see chapter 6.4, page 49):
1. Precise type description of OZD Profi G12D… ATEX
1. Kindly specify the 18 digit number printed on the
device for clear identification.
2. Does the bus system to be transmitted comply with
standard RS 485 in the physical interface?
3. Does the bus access method of the used bus system
ensure that only station on the bus can be accessed
at any point of time?
Attention!
collision-afflicted access methods (e.g.
CAN) are not permitted!
4. Does the fieldbus system work in “half duplex-“ or
“full duplex“ procedure?
5. Give a possibly detailed error description in your own
words.
6. Send a detailed network plan with
– the fibre type and the fibre length
– the location and the length of the electrical
seg ments,
– the values, the type and the position of the
termination on the electrical bus segment.
7. Which data rate is used?
8. How are the DIP switches set for the individual OZD
Profi G12D… ATEX 1 ?
9. What is the status of the LEDs on the concerned
OZD Profi G12D… ATEX 1?
10. Specify the voltage value of the analog voltage out-
puts (terminal Ua2 and Ua3 on the 3 pole terminal
block on the front side of the device) of the con-
cerned port.
11. Name and manufacturer of the fieldbus system?
Important!
We cannot process your request without complete
details on questions 1 to 11!
Note:
The current version of this manual is on the Internet
under http://www.hirschmann.com/ through the product
search for product.
The version of the manual is on every page of the manual
at the bottom opposite the page number.
6.3 Problem report
– Level is on
both
OZD Profi of the faulty fibre optic
segment in the range “optical system reserve
reduced“ or “normal operation“: one of the two
OZD Profi of the faulty fibre optic segment is
defective.
First replace a OZD Profi of the faulty fibre optic
segment. If the error persists, instead of this
replace the other OZD Profi.