Westermo ODW-641 - Manual (Page 18)

18 6650-2291
Start up guide
Follow the steps below to get the unit up and running in a simple application.
… Use the factory DIP-switch settings.
… Connect The fibre link between the both units.
… Connect the power supply to both units.
The Fibre link should be in operation as indicated by the CH1 LED.
… Connect the PROFIBUS DP connectors between both ODW-611 and PROFIBUS units
configured to be units in the PROFIBUS DP network.
The PROFIBUS DP will be in operation and the data rate will be automatically detect-
ed, as indicated by the BA LED.
… The point to point application is up and running.
Note: In an ODW-641 fibre optic link there will be some additional processing delays
that do not exist in an electrical bus. It is possible that the PROFIBUS application
must be adjusted to accommodate for this delay. See page 21 “Calculating system
processing delay” for more information on how to determine the overall system
delay time.
POWER CH 1
COM +VA +VB COM
POWER CH 1
COM +VA +VB COM TX RX TX RX
PROFIBUS DP master
Fibre Optic
PROFIBUS DP PROFIBUS DP
PROFIBUS DP slave